diff --git a/application/config/autoload.php b/application/config/autoload.php
index a45567b..db49ca1 100644
--- a/application/config/autoload.php
+++ b/application/config/autoload.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/config.php b/application/config/config.php
index 063c3d5..bb35324 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/constants.php b/application/config/constants.php
index 3b79a03..c7203e4 100644
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/database.php b/application/config/database.php
index 880773d..7eac59b 100644
--- a/application/config/database.php
+++ b/application/config/database.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -80,7 +80,7 @@
 $db['default']['database'] = '';
 $db['default']['dbdriver'] = 'mysql';
 $db['default']['dbprefix'] = '';
-$db['default']['pconnect'] = TRUE;
+$db['default']['pconnect'] = FALSE;
 $db['default']['db_debug'] = TRUE;
 $db['default']['cache_on'] = FALSE;
 $db['default']['cachedir'] = '';
diff --git a/application/config/doctypes.php b/application/config/doctypes.php
index 48ccc05..984da59 100644
--- a/application/config/doctypes.php
+++ b/application/config/doctypes.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/foreign_chars.php b/application/config/foreign_chars.php
index 6917623..1ae0cef 100644
--- a/application/config/foreign_chars.php
+++ b/application/config/foreign_chars.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/hooks.php b/application/config/hooks.php
index 000ae51..80269df 100644
--- a/application/config/hooks.php
+++ b/application/config/hooks.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/memcached.php b/application/config/memcached.php
new file mode 100644
index 0000000..2b1a772
--- /dev/null
+++ b/application/config/memcached.php
@@ -0,0 +1,46 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * NOTICE OF LICENSE
+ *
+ * Licensed under the Academic Free License version 3.0
+ *
+ * This source file is subject to the Academic Free License (AFL 3.0) that is
+ * bundled with this package in the files license_afl.txt / license_afl.rst.
+ * It is also available through the world wide web at this URL:
+ * http://opensource.org/licenses/AFL-3.0
+ * If you did not receive a copy of the license and are unable to obtain it
+ * through the world wide web, please send an email to
+ * licensing@ellislab.com so we can send you a copy immediately.
+ *
+ * @package		CodeIgniter
+ * @author		EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
+ * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
+ * @link		http://codeigniter.com
+ * @since		Version 2.0
+ * @filesource
+ */
+
+/*
+| -------------------------------------------------------------------------
+| Memcached settings
+| -------------------------------------------------------------------------
+| Your Memcached servers can be specified below.
+|
+|	See: http://codeigniter.com/user_guide/libraries/caching.html#memcached
+|
+*/
+$config = array(
+	'default' => array(
+		'hostname' => '127.0.0.1',
+		'port'     => '11211',
+		'weight'   => '1',
+	),
+);
+
+/* End of file memcached.php */
+/* Location: ./application/config/memcached.php */
\ No newline at end of file
diff --git a/application/config/migration.php b/application/config/migration.php
index 4fb027b..668c357 100644
--- a/application/config/migration.php
+++ b/application/config/migration.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/mimes.php b/application/config/mimes.php
index c43f1fc..8c34fd2 100644
--- a/application/config/mimes.php
+++ b/application/config/mimes.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Academic Free License version 3.0
- * 
+ *
  * This source file is subject to the Academic Free License (AFL 3.0) that is
  * bundled with this package in the files license_afl.txt / license_afl.rst.
  * It is also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -111,8 +111,8 @@
 				'log'	=>	array('text/plain', 'text/x-log'),
 				'rtx'	=>	'text/richtext',
 				'rtf'	=>	'text/rtf',
-				'xml'	=>	'text/xml',
-				'xsl'	=>	'text/xml',
+				'xml'	=>	array('application/xml', 'text/xml'),
+				'xsl'	=>	array('application/xml', 'text/xsl', 'text/xml'),
 				'mpeg'	=>	'video/mpeg',
 				'mpg'	=>	'video/mpeg',
 				'mpe'	=>	'video/mpeg',
@@ -160,8 +160,9 @@
 				'ac3'   =>	'audio/ac3',
 				'flac'  =>	'audio/x-flac',
 				'ogg'   =>	'audio/ogg',
+				'kmz'	=>	array('application/vnd.google-earth.kmz', 'application/zip', 'application/x-zip'),
+				'kml'	=>	array('application/vnd.google-earth.kml+xml', 'application/xml', 'text/xml')
 			);
 
-
 /* End of file mimes.php */
 /* Location: ./application/config/mimes.php */
diff --git a/application/config/profiler.php b/application/config/profiler.php
index b0bd2cd..f956142 100644
--- a/application/config/profiler.php
+++ b/application/config/profiler.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/routes.php b/application/config/routes.php
index b7f4056..53fc7e7 100644
--- a/application/config/routes.php
+++ b/application/config/routes.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/smileys.php b/application/config/smileys.php
index ada329a..4132aed 100644
--- a/application/config/smileys.php
+++ b/application/config/smileys.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/config/user_agents.php b/application/config/user_agents.php
index 7f5fe81..e7a6894 100644
--- a/application/config/user_agents.php
+++ b/application/config/user_agents.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/controllers/welcome.php b/application/controllers/welcome.php
index 0757f2d..5eb0e96 100644
--- a/application/controllers/welcome.php
+++ b/application/controllers/welcome.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/errors/error_404.php b/application/errors/error_404.php
index eb98deb..4dd8fc4 100644
--- a/application/errors/error_404.php
+++ b/application/errors/error_404.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/errors/error_db.php b/application/errors/error_db.php
index a53c389..130ffc1 100644
--- a/application/errors/error_db.php
+++ b/application/errors/error_db.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/errors/error_general.php b/application/errors/error_general.php
index 7d9a29f..2a844a8 100644
--- a/application/errors/error_general.php
+++ b/application/errors/error_general.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/errors/error_php.php b/application/errors/error_php.php
index 1bf2454..8e293cd 100644
--- a/application/errors/error_php.php
+++ b/application/errors/error_php.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/application/views/welcome_message.php b/application/views/welcome_message.php
index 7090453..acc36b6 100644
--- a/application/views/welcome_message.php
+++ b/application/views/welcome_message.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/AFL-3.0 Academic Free License (AFL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/index.php b/index.php
index 08e5d6d..4ae1cee 100644
--- a/index.php
+++ b/index.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php
index 0f31040..da246c9 100755
--- a/system/core/Benchmark.php
+++ b/system/core/Benchmark.php
@@ -18,7 +18,7 @@
  * 
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 97527e5..5152073 100755
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Common.php b/system/core/Common.php
index b0921fe..f42bb64 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Config.php b/system/core/Config.php
index b0b4c9a..3e26354 100755
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Controller.php b/system/core/Controller.php
index ca2bf41..55b3ec2 100644
--- a/system/core/Controller.php
+++ b/system/core/Controller.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
index ead8d81..3737f29 100755
--- a/system/core/Exceptions.php
+++ b/system/core/Exceptions.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
index aa251a3..174adcb 100755
--- a/system/core/Hooks.php
+++ b/system/core/Hooks.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Input.php b/system/core/Input.php
index 3cbbe78..7cfa4c6 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Lang.php b/system/core/Lang.php
index e03afb0..5eb2801 100755
--- a/system/core/Lang.php
+++ b/system/core/Lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 4e14b54..c4a6b50 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -495,6 +495,20 @@
 	// --------------------------------------------------------------------
 
 	/**
+	 * Get Variables
+	 *
+	 * Retrieve all loaded variables
+	 *
+	 * @return	array
+	 */
+	public function get_vars()
+	{
+		return $this->_ci_cached_vars;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Load Helper
 	 *
 	 * This function loads the specified helper file.
diff --git a/system/core/Model.php b/system/core/Model.php
index c34bab6..fc64013 100755
--- a/system/core/Model.php
+++ b/system/core/Model.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Output.php b/system/core/Output.php
index 9727a18..e529f91 100755
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Router.php b/system/core/Router.php
index 748678d..8cad868 100755
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Security.php b/system/core/Security.php
index 60a64f3..272a8bf 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/URI.php b/system/core/URI.php
index 578d174..3c26d30 100755
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
index 7abe4e4..40a7ac4 100644
--- a/system/core/Utf8.php
+++ b/system/core/Utf8.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
@@ -44,19 +44,18 @@
 	 * Constructor
 	 *
 	 * Determines if UTF-8 support is to be enabled
-	 *
 	 */
-	function __construct()
+	public function __construct()
 	{
 		log_message('debug', "Utf8 Class Initialized");
 
 		global $CFG;
 
 		if (
-			preg_match('/./u', 'é') === 1					// PCRE must support UTF-8
-			AND function_exists('iconv')					// iconv must be installed
-			AND ini_get('mbstring.func_overload') != 1		// Multibyte string function overloading cannot be enabled
-			AND $CFG->item('charset') == 'UTF-8'			// Application charset must be UTF-8
+			@preg_match('/./u', 'é') === 1		// PCRE must support UTF-8
+			&& function_exists('iconv')			// iconv must be installed
+			&& ini_get('mbstring.func_overload') !== 1	// Multibyte string function overloading cannot be enabled
+			&& $CFG->item('charset') == 'UTF-8'			// Application charset must be UTF-8
 			)
 		{
 			log_message('debug', "UTF-8 Support Enabled");
@@ -90,11 +89,10 @@
 	 *
 	 * Ensures strings are UTF-8
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function clean_string($str)
+	public function clean_string($str)
 	{
 		if ($this->_is_ascii($str) === FALSE)
 		{
@@ -113,11 +111,10 @@
 	 * line feeds, and carriage returns, as all others can cause
 	 * problems in XML
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function safe_ascii_for_xml($str)
+	public function safe_ascii_for_xml($str)
 	{
 		return remove_invisible_characters($str, FALSE);
 	}
@@ -129,12 +126,11 @@
 	 *
 	 * Attempts to convert a string to UTF-8
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string	- input encoding
 	 * @return	string
 	 */
-	function convert_to_utf8($str, $encoding)
+	public function convert_to_utf8($str, $encoding)
 	{
 		if (function_exists('iconv'))
 		{
@@ -159,13 +155,12 @@
 	 *
 	 * Tests if a string is standard 7-bit ASCII or not
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
-	function _is_ascii($str)
+	protected function _is_ascii($str)
 	{
-		return (preg_match('/[^\x00-\x7F]/S', $str) == 0);
+		return (preg_match('/[^\x00-\x7F]/S', $str) === 0);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/DB.php b/system/database/DB.php
index 27142c8..a0106c1 100755
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index 530b44e..486b4d7 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -5,9 +5,9 @@
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -40,42 +40,44 @@
  */
 class CI_DB_active_record extends CI_DB_driver {
 
-	protected $return_delete_sql	= FALSE;
-	protected $reset_delete_data	= FALSE;
-	
-	protected $ar_select			= array();
-	protected $ar_distinct			= FALSE;
-	protected $ar_from				= array();
-	protected $ar_join				= array();
-	protected $ar_where				= array();
-	protected $ar_like				= array();
-	protected $ar_groupby			= array();
-	protected $ar_having			= array();
-	protected $ar_keys				= array();
-	protected $ar_limit				= FALSE;
-	protected $ar_offset			= FALSE;
-	protected $ar_order				= FALSE;
-	protected $ar_orderby			= array();
-	protected $ar_set				= array();
-	protected $ar_wherein			= array();
-	protected $ar_aliased_tables	= array();
-	protected $ar_store_array		= array();
+	protected $return_delete_sql		= FALSE;
+	protected $reset_delete_data		= FALSE;
+
+	protected $ar_select				= array();
+	protected $ar_distinct				= FALSE;
+	protected $ar_from					= array();
+	protected $ar_join					= array();
+	protected $ar_where					= array();
+	protected $ar_like					= array();
+	protected $ar_groupby				= array();
+	protected $ar_having				= array();
+	protected $ar_keys					= array();
+	protected $ar_limit					= FALSE;
+	protected $ar_offset				= FALSE;
+	protected $ar_order					= FALSE;
+	protected $ar_orderby				= array();
+	protected $ar_set					= array();
+	protected $ar_wherein				= array();
+	protected $ar_aliased_tables		= array();
+	protected $ar_store_array			= array();
+	protected $ar_where_group_started	= FALSE;
+	protected $ar_where_group_count		= 0;
 
 	// Active Record Caching variables
-	protected $ar_caching			= FALSE;
-	protected $ar_cache_exists		= array();
-	protected $ar_cache_select		= array();
-	protected $ar_cache_from		= array();
-	protected $ar_cache_join		= array();
-	protected $ar_cache_where		= array();
-	protected $ar_cache_like		= array();
-	protected $ar_cache_groupby		= array();
-	protected $ar_cache_having		= array();
-	protected $ar_cache_orderby		= array();
-	protected $ar_cache_set			= array();
-	
-	protected $ar_no_escape 		= array();
-	protected $ar_cache_no_escape	= array();
+	protected $ar_caching				= FALSE;
+	protected $ar_cache_exists			= array();
+	protected $ar_cache_select			= array();
+	protected $ar_cache_from			= array();
+	protected $ar_cache_join			= array();
+	protected $ar_cache_where			= array();
+	protected $ar_cache_like			= array();
+	protected $ar_cache_groupby			= array();
+	protected $ar_cache_having			= array();
+	protected $ar_cache_orderby			= array();
+	protected $ar_cache_set				= array();
+
+	protected $ar_no_escape 			= array();
+	protected $ar_cache_no_escape		= array();
 
 	// --------------------------------------------------------------------
 
@@ -412,6 +414,8 @@
 	 */
 	protected function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)
 	{
+		$type = $this->_group_get_type($type);
+
 		if ( ! is_array($key))
 		{
 			$key = array($key => $value);
@@ -441,7 +445,7 @@
 
 					$v = ' '.$this->escape($v);
 				}
-				
+
 				if ( ! $this->_has_operator($k))
 				{
 					$k .= ' = ';
@@ -553,6 +557,8 @@
 			return;
 		}
 
+		$type = $this->_group_get_type($type);
+
 		if ( ! is_array($values))
 		{
 			$values = array($values);
@@ -663,6 +669,8 @@
 	 */
 	protected function _like($field, $match = '', $type = 'AND ', $side = 'both', $not = '')
 	{
+		$type = $this->_group_get_type($type);
+
 		if ( ! is_array($field))
 		{
 			$field = array($field => $match);
@@ -713,6 +721,112 @@
 	// --------------------------------------------------------------------
 
 	/**
+	 * Starts a query group.
+	 *
+	 * @param	string (Internal use only)
+	 * @param	string (Internal use only)
+	 * @return	object
+	 */
+	public function group_start($not = '', $type = 'AND ')
+	{
+		$type = $this->_group_get_type($type);
+
+		$this->ar_where_group_started = TRUE;
+
+		$prefix = (count($this->ar_where) == 0 AND count($this->ar_cache_where) == 0) ? '' : $type;
+		$value =  $prefix . $not . str_repeat(' ', ++$this->ar_where_group_count) . ' (';
+
+		$this->ar_where[] = $value;
+		if ($this->ar_caching)
+		{
+			$this->ar_cache_where[] = $value;
+		}
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but ORs the group
+	 *
+	 * @return	object
+	 */
+	public function or_group_start()
+	{
+		return $this->group_start('', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but NOTs the group
+	 *
+	 * @return	object
+	 */
+	public function not_group_start()
+	{
+		return $this->group_start('NOT ', 'AND ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Starts a query group, but OR NOTs the group
+	 *
+	 * @return	object
+	 */
+	public function or_not_group_start()
+	{
+		return $this->group_start('NOT ', 'OR ');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Ends a query group
+	 *
+	 * @return	object
+	 */
+	public function group_end()
+	{
+		$value = str_repeat(' ', $this->ar_where_group_count--) . ')';
+
+		$this->ar_where[] = $value;
+		if ($this->ar_caching)
+		{
+			$this->ar_cache_where[] = $value;
+		}
+
+		$this->ar_where_group_started = FALSE;
+
+		return $this;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Group_get_type
+	 *
+	 * Called by group_start(), _like(), _where() and _where_in()
+	 *
+	 * @param	string
+	 * @return	string
+	 */
+	protected function _group_get_type($type)
+	{
+		if ($this->ar_where_group_started)
+		{
+			$type = '';
+			$this->ar_where_group_started = FALSE;
+		}
+
+		return $type;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * GROUP BY
 	 *
 	 * @param	string
@@ -950,7 +1064,7 @@
 
 		return $this;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -963,24 +1077,24 @@
 	 * @param	boolean	TRUE: resets AR values; FALSE: leave AR vaules alone
 	 * @return	string
 	 */
-	public function get_compiled_select($table = '', $reset = TRUE) 
+	public function get_compiled_select($table = '', $reset = TRUE)
 	{
 		if ($table != '')
 		{
 			$this->_track_aliases($table);
 			$this->from($table);
 		}
-		
+
 		$select =  $this->_compile_select();
-		
+
 		if ($reset === TRUE)
 		{
 			$this->_reset_select();
 		}
-		
+
 		return $select;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1197,7 +1311,7 @@
 
 		return $this;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1211,25 +1325,25 @@
 	 * @return	string
 	 */
 	public function get_compiled_insert($table = '', $reset = TRUE)
-	{	
+	{
 		if ($this->_validate_insert($table) === FALSE)
 		{
 			return FALSE;
 		}
-		
+
 		$sql = $this->_insert(
 			$this->_protect_identifiers(
 				$this->ar_from[0], TRUE, NULL, FALSE
 			),
-			array_keys($this->ar_set), 
+			array_keys($this->ar_set),
 			array_values($this->ar_set)
 		);
-		
+
 		if ($reset === TRUE)
 		{
 			$this->_reset_write();
 		}
-		
+
 		return $sql;
 	}
 
@@ -1251,24 +1365,24 @@
 		{
 			$this->set($set);
 		}
-		
+
 		if ($this->_validate_insert($table) === FALSE)
 		{
 			return FALSE;
 		}
-		
+
 		$sql = $this->_insert(
 			$this->_protect_identifiers(
 				$this->ar_from[0], TRUE, NULL, FALSE
-			), 
-			array_keys($this->ar_set), 
+			),
+			array_keys($this->ar_set),
 			array_values($this->ar_set)
 		);
 
 		$this->_reset_write();
 		return $this->query($sql);
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1282,7 +1396,7 @@
 	 * @param	string	the table to insert data into
 	 * @return	string
 	 */
-	protected function _validate_insert($table = '') 
+	protected function _validate_insert($table = '')
 	{
 		if (count($this->ar_set) == 0)
 		{
@@ -1308,7 +1422,7 @@
 		{
 			$this->ar_from[0] = $table;
 		}
-		
+
 		return TRUE;
 	}
 
@@ -1358,7 +1472,7 @@
 		$this->_reset_write();
 		return $this->query($sql);
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1375,22 +1489,22 @@
 	{
 		// Combine any cached components with the current statements
 		$this->_merge_cache();
-	
+
 		if ($this->_validate_update($table) === FALSE)
 		{
 			return FALSE;
 		}
-		
+
 		$sql = $this->_update($this->_protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit);
-		
+
 		if ($reset === TRUE)
 		{
 			$this->_reset_write();
 		}
-		
+
 		return $sql;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1433,7 +1547,7 @@
 		$this->_reset_write();
 		return $this->query($sql);
 	}
-		
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1474,7 +1588,7 @@
 			$this->ar_from[0] = $table;
 		}
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1673,7 +1787,7 @@
 
 		return $this->query($sql);
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1693,7 +1807,7 @@
 		$this->return_delete_sql = FALSE;
 		return $sql;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1766,7 +1880,7 @@
 		{
 			$this->_reset_write();
 		}
-		
+
 		if ($this->return_delete_sql === true)
 		{
 			return $sql;
@@ -1774,7 +1888,7 @@
 
 		return $this->query($sql);
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1854,7 +1968,7 @@
 			}
 		}
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -2160,12 +2274,12 @@
 
 		$this->ar_no_escape = $this->ar_cache_no_escape;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
 	 * Reset Active Record values.
-	 * 
+	 *
 	 * Publicly-visible method to reset the AR values.
 	 *
 	 * @access	public
@@ -2253,4 +2367,4 @@
 }
 
 /* End of file DB_active_rec.php */
-/* Location: ./system/database/DB_active_rec.php */
\ No newline at end of file
+/* Location: ./system/database/DB_active_rec.php */
diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
index 6c1ffc0..1ff046c 100644
--- a/system/database/DB_cache.php
+++ b/system/database/DB_cache.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 9d92f2f..661b42c 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
index 78bf77a..762d18a 100644
--- a/system/database/DB_forge.php
+++ b/system/database/DB_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -102,12 +102,11 @@
 	/**
 	 * Add Key
 	 *
-	 * @access	public
 	 * @param	string	key
 	 * @param	string	type
-	 * @return	void
+	 * @return	object
 	 */
-	function add_key($key = '', $primary = FALSE)
+	public function add_key($key = '', $primary = FALSE)
 	{
 		if (is_array($key))
 		{
@@ -132,6 +131,8 @@
 		{
 			$this->keys[] = $key;
 		}
+
+		return $this;
 	}
 
 	// --------------------------------------------------------------------
@@ -139,11 +140,10 @@
 	/**
 	 * Add Field
 	 *
-	 * @access	public
 	 * @param	string	collation
-	 * @return	void
+	 * @return	object
 	 */
-	function add_field($field = '')
+	public function add_field($field = '')
 	{
 		if ($field == '')
 		{
@@ -155,12 +155,12 @@
 			if ($field == 'id')
 			{
 				$this->add_field(array(
-										'id' => array(
-													'type' => 'INT',
-													'constraint' => 9,
-													'auto_increment' => TRUE
-													)
-								));
+					'id' => array(
+						'type' => 'INT',
+						'constraint' => 9,
+						'auto_increment' => TRUE
+					)
+				));
 				$this->add_key('id', TRUE);
 			}
 			else
@@ -178,7 +178,8 @@
 		{
 			$this->fields = array_merge($this->fields, $field);
 		}
-
+		
+		return $this;
 	}
 
 	// --------------------------------------------------------------------
@@ -186,11 +187,10 @@
 	/**
 	 * Create Table
 	 *
-	 * @access	public
 	 * @param	string	the table name
 	 * @return	bool
 	 */
-	function create_table($table = '', $if_not_exists = FALSE)
+	public function create_table($table = '', $if_not_exists = FALSE)
 	{
 		if ($table == '')
 		{
@@ -219,11 +219,10 @@
 	/**
 	 * Drop Table
 	 *
-	 * @access	public
 	 * @param	string	the table name
 	 * @return	bool
 	 */
-	function drop_table($table_name)
+	public function drop_table($table_name)
 	{
 		$sql = $this->_drop_table($this->db->dbprefix.$table_name);
 
@@ -240,12 +239,11 @@
 	/**
 	 * Rename Table
 	 *
-	 * @access	public
 	 * @param	string	the old table name
 	 * @param	string	the new table name
 	 * @return	bool
 	 */
-	function rename_table($table_name, $new_table_name)
+	public function rename_table($table_name, $new_table_name)
 	{
 		if ($table_name == '' OR $new_table_name == '')
 		{
@@ -261,13 +259,12 @@
 	/**
 	 * Column Add
 	 *
-	 * @access	public
 	 * @param	string	the table name
 	 * @param	string	the column name
 	 * @param	string	the column definition
 	 * @return	bool
 	 */
-	function add_column($table = '', $field = array(), $after_field = '')
+	public function add_column($table = '', $field = array(), $after_field = '')
 	{
 		if ($table == '')
 		{
@@ -297,7 +294,6 @@
 		}
 
 		return TRUE;
-
 	}
 
 	// --------------------------------------------------------------------
@@ -305,12 +301,11 @@
 	/**
 	 * Column Drop
 	 *
-	 * @access	public
 	 * @param	string	the table name
 	 * @param	string	the column name
 	 * @return	bool
 	 */
-	function drop_column($table = '', $column_name = '')
+	public function drop_column($table = '', $column_name = '')
 	{
 
 		if ($table == '')
@@ -333,13 +328,12 @@
 	/**
 	 * Column Modify
 	 *
-	 * @access	public
 	 * @param	string	the table name
 	 * @param	string	the column name
 	 * @param	string	the column definition
 	 * @return	bool
 	 */
-	function modify_column($table = '', $field = array())
+	public function modify_column($table = '', $field = array())
 	{
 		if ($table == '')
 		{
@@ -384,10 +378,9 @@
 	 *
 	 * Resets table creation vars
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	function _reset()
+	protected function _reset()
 	{
 		$this->fields		= array();
 		$this->keys			= array();
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 9f0b018..c4ed20b 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
index 60ecb52..8db4f3b 100644
--- a/system/database/DB_utility.php
+++ b/system/database/DB_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php
index 8181bd6..cde719e 100644
--- a/system/database/drivers/cubrid/cubrid_driver.php
+++ b/system/database/drivers/cubrid/cubrid_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0.2
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
index 410d065..85e7400 100644
--- a/system/database/drivers/cubrid/cubrid_forge.php
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/cubrid/cubrid_result.php b/system/database/drivers/cubrid/cubrid_result.php
index b2f1bcf..4c0fede 100644
--- a/system/database/drivers/cubrid/cubrid_result.php
+++ b/system/database/drivers/cubrid/cubrid_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0.2
diff --git a/system/database/drivers/cubrid/cubrid_utility.php b/system/database/drivers/cubrid/cubrid_utility.php
index 1fa0390..750c0d8 100644
--- a/system/database/drivers/cubrid/cubrid_utility.php
+++ b/system/database/drivers/cubrid/cubrid_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index 87e7c9d..2a10989 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_forge.php b/system/database/drivers/mssql/mssql_forge.php
index 0a893f6..dd8aa34 100644
--- a/system/database/drivers/mssql/mssql_forge.php
+++ b/system/database/drivers/mssql/mssql_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_result.php b/system/database/drivers/mssql/mssql_result.php
index a8cd7c9..bba2e62 100644
--- a/system/database/drivers/mssql/mssql_result.php
+++ b/system/database/drivers/mssql/mssql_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_utility.php b/system/database/drivers/mssql/mssql_utility.php
index 576d13f..be6ed5b 100644
--- a/system/database/drivers/mssql/mssql_utility.php
+++ b/system/database/drivers/mssql/mssql_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index 6ded6e5..0f69a07 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_forge.php b/system/database/drivers/mysql/mysql_forge.php
index 89aaf5d..a41a7b4 100644
--- a/system/database/drivers/mysql/mysql_forge.php
+++ b/system/database/drivers/mysql/mysql_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_result.php b/system/database/drivers/mysql/mysql_result.php
index 29297b6..dcb99cd 100644
--- a/system/database/drivers/mysql/mysql_result.php
+++ b/system/database/drivers/mysql/mysql_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
index 9cb6645..7035241 100644
--- a/system/database/drivers/mysql/mysql_utility.php
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index fb5953b..aff62a3 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_forge.php b/system/database/drivers/mysqli/mysqli_forge.php
index cdd5399..590efa9 100644
--- a/system/database/drivers/mysqli/mysqli_forge.php
+++ b/system/database/drivers/mysqli/mysqli_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php
index 163788b..89dd4de 100644
--- a/system/database/drivers/mysqli/mysqli_result.php
+++ b/system/database/drivers/mysqli/mysqli_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
index ef7c89f..76bd49e 100644
--- a/system/database/drivers/mysqli/mysqli_utility.php
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 9c38dcb..c662190 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright   Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php
index bafab3d..b4a24cd 100644
--- a/system/database/drivers/oci8/oci8_forge.php
+++ b/system/database/drivers/oci8/oci8_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_result.php b/system/database/drivers/oci8/oci8_result.php
index f325592..0f69fa9 100644
--- a/system/database/drivers/oci8/oci8_result.php
+++ b/system/database/drivers/oci8/oci8_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright   Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_utility.php b/system/database/drivers/oci8/oci8_utility.php
index 28c374d..d60f98b 100644
--- a/system/database/drivers/oci8/oci8_utility.php
+++ b/system/database/drivers/oci8/oci8_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
index 0e9d46d..6ba39f0 100644
--- a/system/database/drivers/odbc/odbc_driver.php
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php
index e326a28..e0ec687 100644
--- a/system/database/drivers/odbc/odbc_forge.php
+++ b/system/database/drivers/odbc/odbc_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php
index b23a821..ba66085 100644
--- a/system/database/drivers/odbc/odbc_result.php
+++ b/system/database/drivers/odbc/odbc_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_utility.php b/system/database/drivers/odbc/odbc_utility.php
index 94666ac..bae3fe8 100644
--- a/system/database/drivers/odbc/odbc_utility.php
+++ b/system/database/drivers/odbc/odbc_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index 457cf71..4f4f44b 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.1.0
diff --git a/system/database/drivers/pdo/pdo_forge.php b/system/database/drivers/pdo/pdo_forge.php
index bf30665..0764159 100644
--- a/system/database/drivers/pdo/pdo_forge.php
+++ b/system/database/drivers/pdo/pdo_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.1.0
diff --git a/system/database/drivers/pdo/pdo_result.php b/system/database/drivers/pdo/pdo_result.php
index 559c2ed..6b523b0 100644
--- a/system/database/drivers/pdo/pdo_result.php
+++ b/system/database/drivers/pdo/pdo_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.1.0
diff --git a/system/database/drivers/pdo/pdo_utility.php b/system/database/drivers/pdo/pdo_utility.php
index 90b46af..971ec88 100644
--- a/system/database/drivers/pdo/pdo_utility.php
+++ b/system/database/drivers/pdo/pdo_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.1.0
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 50f096b..42329bd 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
index f86ba2d..756fd34 100644
--- a/system/database/drivers/postgre/postgre_forge.php
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -63,32 +63,16 @@
 	}
 
 	// --------------------------------------------------------------------
-
+	
 	/**
-	 * Create Table
+	 * Process Fields
 	 *
-	 * @access	private
-	 * @param	string	the table name
-	 * @param	array	the fields
-	 * @param	mixed	primary key(s)
-	 * @param	mixed	key(s)
-	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
-	 * @return	bool
+	 * @param	mixed	the fields
+	 * @return	string
 	 */
-	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+	function _process_fields($fields, $primary_keys=array())
 	{
-		$sql = 'CREATE TABLE ';
-
-		if ($if_not_exists === TRUE)
-		{
-			// PostgreSQL doesn't support IF NOT EXISTS syntax so we check if table exists manually
-			if ($this->db->table_exists($table))
-			{
-				return TRUE;
-			}
-		}
-
-		$sql .= $this->db->_escape_identifiers($table)." (";
+		$sql = '';
 		$current_field_count = 0;
 
 		foreach ($fields as $field=>$attributes)
@@ -184,6 +168,38 @@
 				$sql .= ',';
 			}
 		}
+		
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @param	array	the fields
+	 * @param	mixed	primary key(s)
+	 * @param	mixed	key(s)
+	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
+	 * @return	bool
+	 */
+	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+	{
+		$sql = 'CREATE TABLE ';
+
+		if ($if_not_exists === TRUE)
+		{
+			// PostgreSQL doesn't support IF NOT EXISTS syntax so we check if table exists manually
+			if ($this->db->table_exists($table))
+			{
+				return TRUE;
+			}
+		}
+
+		$sql .= $this->db->_escape_identifiers($table)." (";
+		$sql .= $this->_process_fields($fields, $primary_keys);
 
 		if (count($primary_keys) > 0)
 		{
@@ -249,40 +265,25 @@
 	 * @param	string	the field after which we should add the new field
 	 * @return	object
 	 */
-	function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
-	{
-		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
+ 	function _alter_table($alter_type, $table, $fields, $after_field = '')
+ 	{
+ 		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ";
 
-		// DROP has everything it needs now.
-		if ($alter_type == 'DROP')
-		{
-			return $sql;
-		}
+ 		// DROP has everything it needs now.
+ 		if ($alter_type == 'DROP')
+ 		{
+ 			return $sql.$this->db->_protect_identifiers($fields);
+ 		}
 
-		$sql .= " $column_definition";
+ 		$sql .= $this->_process_fields($fields);
 
-		if ($default_value != '')
-		{
-			$sql .= " DEFAULT \"$default_value\"";
-		}
+ 		if ($after_field != '')
+ 		{
+ 			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+ 		}
 
-		if ($null === NULL)
-		{
-			$sql .= ' NULL';
-		}
-		else
-		{
-			$sql .= ' NOT NULL';
-		}
-
-		if ($after_field != '')
-		{
-			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
-		}
-
-		return $sql;
-
-	}
+ 		return $sql;
+ 	}
 
 	// --------------------------------------------------------------------
 
@@ -301,8 +302,6 @@
 		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
 		return $sql;
 	}
-
-
 }
 
 /* End of file postgre_forge.php */
diff --git a/system/database/drivers/postgre/postgre_result.php b/system/database/drivers/postgre/postgre_result.php
index 808e8bf..9161bf9 100644
--- a/system/database/drivers/postgre/postgre_result.php
+++ b/system/database/drivers/postgre/postgre_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/postgre/postgre_utility.php b/system/database/drivers/postgre/postgre_utility.php
index f81f857..dffd8c5 100644
--- a/system/database/drivers/postgre/postgre_utility.php
+++ b/system/database/drivers/postgre/postgre_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index a6257cb..28c3cae 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_forge.php b/system/database/drivers/sqlite/sqlite_forge.php
index 96a5e0e..2b723be 100644
--- a/system/database/drivers/sqlite/sqlite_forge.php
+++ b/system/database/drivers/sqlite/sqlite_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_result.php b/system/database/drivers/sqlite/sqlite_result.php
index 2bbd1db..74c0dc5 100644
--- a/system/database/drivers/sqlite/sqlite_result.php
+++ b/system/database/drivers/sqlite/sqlite_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_utility.php b/system/database/drivers/sqlite/sqlite_utility.php
index c9914f2..f00687e 100644
--- a/system/database/drivers/sqlite/sqlite_utility.php
+++ b/system/database/drivers/sqlite/sqlite_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
index 340cd3a..6fd52ef 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_driver.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlsrv/sqlsrv_forge.php b/system/database/drivers/sqlsrv/sqlsrv_forge.php
index 4fa0596..2a77669 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_forge.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_forge.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlsrv/sqlsrv_result.php b/system/database/drivers/sqlsrv/sqlsrv_result.php
index 38aaec7..1ee19c2 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_result.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_result.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlsrv/sqlsrv_utility.php b/system/database/drivers/sqlsrv/sqlsrv_utility.php
index f58b5bd..e96df96 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_utility.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_utility.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
index 6b8695c..c46c4d1 100644
--- a/system/helpers/array_helper.php
+++ b/system/helpers/array_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 0fed819..668b034 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
index a4c1e49..7b439c4 100644
--- a/system/helpers/cookie_helper.php
+++ b/system/helpers/cookie_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
index 49dbdbe..9e58d86 100644
--- a/system/helpers/date_helper.php
+++ b/system/helpers/date_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/directory_helper.php b/system/helpers/directory_helper.php
index cb37446..be65b38 100644
--- a/system/helpers/directory_helper.php
+++ b/system/helpers/directory_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 5f5d1aa..4a1a79c 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/email_helper.php b/system/helpers/email_helper.php
index 22099e5..e6a9003 100644
--- a/system/helpers/email_helper.php
+++ b/system/helpers/email_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
index 5b50853..cc9dea2 100644
--- a/system/helpers/file_helper.php
+++ b/system/helpers/file_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
index 347e8be..3a7f8fe 100644
--- a/system/helpers/form_helper.php
+++ b/system/helpers/form_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
index b6bb402..2a603a6 100644
--- a/system/helpers/html_helper.php
+++ b/system/helpers/html_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/inflector_helper.php b/system/helpers/inflector_helper.php
index 7c50821..f093dd9 100644
--- a/system/helpers/inflector_helper.php
+++ b/system/helpers/inflector_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/language_helper.php b/system/helpers/language_helper.php
index b5217c9..ed17bfa 100644
--- a/system/helpers/language_helper.php
+++ b/system/helpers/language_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/number_helper.php b/system/helpers/number_helper.php
index 71cdabb..71d39df 100644
--- a/system/helpers/number_helper.php
+++ b/system/helpers/number_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/path_helper.php b/system/helpers/path_helper.php
index bca9dcb..da2b8d3 100644
--- a/system/helpers/path_helper.php
+++ b/system/helpers/path_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index ad4e29a..d64bd12 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/smiley_helper.php b/system/helpers/smiley_helper.php
index 38e2965..700f448 100644
--- a/system/helpers/smiley_helper.php
+++ b/system/helpers/smiley_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index 6691681..04d51c2 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
index 38b46e2..842a31d 100644
--- a/system/helpers/text_helper.php
+++ b/system/helpers/text_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/typography_helper.php b/system/helpers/typography_helper.php
index b1cedcd..f81c462 100644
--- a/system/helpers/typography_helper.php
+++ b/system/helpers/typography_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
index 5d9afe4..c630ebe 100755
--- a/system/helpers/url_helper.php
+++ b/system/helpers/url_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/helpers/xml_helper.php b/system/helpers/xml_helper.php
index 0cf8f13..b38dab4 100644
--- a/system/helpers/xml_helper.php
+++ b/system/helpers/xml_helper.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/calendar_lang.php b/system/language/english/calendar_lang.php
index 313eee1..bf61db0 100644
--- a/system/language/english/calendar_lang.php
+++ b/system/language/english/calendar_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/date_lang.php b/system/language/english/date_lang.php
index 515feec..cd6cf39 100644
--- a/system/language/english/date_lang.php
+++ b/system/language/english/date_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -41,7 +41,7 @@
 $lang['date_seconds'] = "Seconds";
 
 $lang['UM12']	= '(UTC -12:00) Baker/Howland Island';
-$lang['UM11']	= '(UTC -11:00) Samoa Time Zone, Niue';
+$lang['UM11']	= '(UTC -11:00) Niue';
 $lang['UM10']	= '(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti';
 $lang['UM95']	= '(UTC -9:30) Marquesas Islands';
 $lang['UM9']	= '(UTC -9:00) Alaska Standard Time, Gambier Islands';
@@ -58,9 +58,9 @@
 $lang['UTC']	= '(UTC) Greenwich Mean Time, Western European Time';
 $lang['UP1']	= '(UTC +1:00) Central European Time, West Africa Time';
 $lang['UP2']	= '(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time';
-$lang['UP3']	= '(UTC +3:00) Moscow Time, East Africa Time';
+$lang['UP3']	= '(UTC +3:00) East Africa Time, Arabia Standard Time';
 $lang['UP35']	= '(UTC +3:30) Iran Standard Time';
-$lang['UP4']	= '(UTC +4:00) Azerbaijan Standard Time, Samara Time';
+$lang['UP4']	= '(UTC +4:00) Moscow Time, Azerbaijan Standard Time';
 $lang['UP45']	= '(UTC +4:30) Afghanistan';
 $lang['UP5']	= '(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time';
 $lang['UP55']	= '(UTC +5:30) Indian Standard Time, Sri Lanka Time';
@@ -78,7 +78,7 @@
 $lang['UP115']	= '(UTC +11:30) Norfolk Island';
 $lang['UP12']	= '(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time';
 $lang['UP1275']	= '(UTC +12:45) Chatham Islands Standard Time';
-$lang['UP13']	= '(UTC +13:00) Phoenix Islands Time, Tonga';
+$lang['UP13']	= '(UTC +13:00) Samoa Time Zone, Phoenix Islands Time, Tonga';
 $lang['UP14']	= '(UTC +14:00) Line Islands';
 
 
diff --git a/system/language/english/db_lang.php b/system/language/english/db_lang.php
index f42e469..2a91597 100644
--- a/system/language/english/db_lang.php
+++ b/system/language/english/db_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/email_lang.php b/system/language/english/email_lang.php
index f2dba27..e0ef427 100644
--- a/system/language/english/email_lang.php
+++ b/system/language/english/email_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
index 1960dfe..6afa37a 100644
--- a/system/language/english/form_validation_lang.php
+++ b/system/language/english/form_validation_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/ftp_lang.php b/system/language/english/ftp_lang.php
index e934a19..18ca927 100644
--- a/system/language/english/ftp_lang.php
+++ b/system/language/english/ftp_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/imglib_lang.php b/system/language/english/imglib_lang.php
index b431d39..fbb92ab 100644
--- a/system/language/english/imglib_lang.php
+++ b/system/language/english/imglib_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/migration_lang.php b/system/language/english/migration_lang.php
index d87ac8d..9765562 100644
--- a/system/language/english/migration_lang.php
+++ b/system/language/english/migration_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 3.0
diff --git a/system/language/english/number_lang.php b/system/language/english/number_lang.php
index a4e6c89..5dfd882 100644
--- a/system/language/english/number_lang.php
+++ b/system/language/english/number_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/profiler_lang.php b/system/language/english/profiler_lang.php
index 790abfa..1d10efa 100644
--- a/system/language/english/profiler_lang.php
+++ b/system/language/english/profiler_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/unit_test_lang.php b/system/language/english/unit_test_lang.php
index 185d83d..ed98439 100644
--- a/system/language/english/unit_test_lang.php
+++ b/system/language/english/unit_test_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/language/english/upload_lang.php b/system/language/english/upload_lang.php
index 2821055..a9a2fe7 100644
--- a/system/language/english/upload_lang.php
+++ b/system/language/english/upload_lang.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index 8725373..2e78a66 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index 90b6868..93993d0 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index ff787e9..fcd55da 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 1942797..4a81b04 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index 0037e67..ffe6f2f 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 2.0
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
index 605765b..a05a7ba 100644
--- a/system/libraries/Calendar.php
+++ b/system/libraries/Calendar.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index 01a0cb8..ba8d69b 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2006 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index 183a959..4e89443 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2006 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -76,7 +76,7 @@
 						if (file_exists($filepath))
 						{
 							include_once $filepath;
-							break;
+							break 2;
 						}
 					}
 				}
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 1066535..922107e 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index c2cb808..e297576 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -40,22 +40,19 @@
  */
 class CI_Encrypt {
 
-	var $CI;
-	var $encryption_key	= '';
-	var $_hash_type	= 'sha1';
-	var $_mcrypt_exists = FALSE;
-	var $_mcrypt_cipher;
-	var $_mcrypt_mode;
+	public $encryption_key	= '';
+	protected $_hash_type	= 'sha1';
+	protected $_mcrypt_exists = FALSE;
+	protected $_mcrypt_cipher;
+	protected $_mcrypt_mode;
 
 	/**
 	 * Constructor
 	 *
 	 * Simply determines whether the mcrypt library exists.
-	 *
 	 */
 	public function __construct()
 	{
-		$this->CI =& get_instance();
 		$this->_mcrypt_exists = ( ! function_exists('mcrypt_encrypt')) ? FALSE : TRUE;
 		log_message('debug', "Encrypt Class Initialized");
 	}
@@ -68,11 +65,10 @@
 	 * Returns it as MD5 in order to have an exact-length 128 bit key.
 	 * Mcrypt is sensitive to keys that are not the correct length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function get_key($key = '')
+	public function get_key($key = '')
 	{
 		if ($key == '')
 		{
@@ -84,7 +80,7 @@
 			$CI =& get_instance();
 			$key = $CI->config->item('encryption_key');
 
-			if ($key == FALSE)
+			if ($key === FALSE)
 			{
 				show_error('In order to use the encryption class requires that you set an encryption key in your config file.');
 			}
@@ -98,13 +94,13 @@
 	/**
 	 * Set the encryption key
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
-	function set_key($key = '')
+	public function set_key($key = '')
 	{
 		$this->encryption_key = $key;
+		return $this;
 	}
 
 	// --------------------------------------------------------------------
@@ -120,12 +116,11 @@
 	 * that is randomized with each call to this function,
 	 * even if the supplied message and key are the same.
 	 *
-	 * @access	public
 	 * @param	string	the string to encode
 	 * @param	string	the key
 	 * @return	string
 	 */
-	function encode($string, $key = '')
+	public function encode($string, $key = '')
 	{
 		$key = $this->get_key($key);
 
@@ -148,12 +143,11 @@
 	 *
 	 * Reverses the above process
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function decode($string, $key = '')
+	public function decode($string, $key = '')
 	{
 		$key = $this->get_key($key);
 
@@ -191,13 +185,12 @@
 	 *
 	 * For more details, see http://codeigniter.com/user_guide/installation/upgrade_200.html#encryption
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	int		(mcrypt mode constant)
 	 * @param	string
 	 * @return	string
 	 */
-	function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
+	public function encode_from_legacy($string, $legacy_mode = MCRYPT_MODE_ECB, $key = '')
 	{
 		if ($this->_mcrypt_exists === FALSE)
 		{
@@ -242,12 +235,11 @@
 	 * Takes a plain-text string and key as input and generates an
 	 * encoded bit-string using XOR
 	 *
-	 * @access	private
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function _xor_encode($string, $key)
+	protected function _xor_encode($string, $key)
 	{
 		$rand = '';
 		while (strlen($rand) < 32)
@@ -274,12 +266,11 @@
 	 * Takes an encoded string and key as input and generates the
 	 * plain-text original message
 	 *
-	 * @access	private
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function _xor_decode($string, $key)
+	protected function _xor_decode($string, $key)
 	{
 		$string = $this->_xor_merge($string, $key);
 
@@ -299,12 +290,11 @@
 	 *
 	 * Takes a string and key as input and computes the difference using XOR
 	 *
-	 * @access	private
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function _xor_merge($string, $key)
+	protected function _xor_merge($string, $key)
 	{
 		$hash = $this->hash($key);
 		$str = '';
@@ -321,12 +311,11 @@
 	/**
 	 * Encrypt using Mcrypt
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function mcrypt_encode($data, $key)
+	public function mcrypt_encode($data, $key)
 	{
 		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
 		$init_vect = mcrypt_create_iv($init_size, MCRYPT_RAND);
@@ -338,12 +327,11 @@
 	/**
 	 * Decrypt using Mcrypt
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function mcrypt_decode($data, $key)
+	public function mcrypt_decode($data, $key)
 	{
 		$data = $this->_remove_cipher_noise($data, $key);
 		$init_size = mcrypt_get_iv_size($this->_get_cipher(), $this->_get_mode());
@@ -365,14 +353,11 @@
 	 * against Man-in-the-middle attacks on CBC mode ciphers
 	 * http://www.ciphersbyritter.com/GLOSSARY.HTM#IV
 	 *
-	 * Function description
-	 *
-	 * @access	private
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
-	function _add_cipher_noise($data, $key)
+	protected function _add_cipher_noise($data, $key)
 	{
 		$keyhash = $this->hash($key);
 		$keylen = strlen($keyhash);
@@ -399,11 +384,10 @@
 	 *
 	 * Function description
 	 *
-	 * @access	public
 	 * @param	type
 	 * @return	type
 	 */
-	function _remove_cipher_noise($data, $key)
+	protected function _remove_cipher_noise($data, $key)
 	{
 		$keyhash = $this->hash($key);
 		$keylen = strlen($keyhash);
@@ -434,13 +418,13 @@
 	/**
 	 * Set the Mcrypt Cipher
 	 *
-	 * @access	public
 	 * @param	constant
 	 * @return	string
 	 */
-	function set_cipher($cipher)
+	public function set_cipher($cipher)
 	{
 		$this->_mcrypt_cipher = $cipher;
+		return $this;
 	}
 
 	// --------------------------------------------------------------------
@@ -448,13 +432,13 @@
 	/**
 	 * Set the Mcrypt Mode
 	 *
-	 * @access	public
 	 * @param	constant
 	 * @return	string
 	 */
 	function set_mode($mode)
 	{
 		$this->_mcrypt_mode = $mode;
+		return $this;
 	}
 
 	// --------------------------------------------------------------------
@@ -462,10 +446,9 @@
 	/**
 	 * Get Mcrypt cipher Value
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _get_cipher()
+	protected function _get_cipher()
 	{
 		if ($this->_mcrypt_cipher == '')
 		{
@@ -480,10 +463,9 @@
 	/**
 	 * Get Mcrypt Mode Value
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _get_mode()
+	protected function _get_mode()
 	{
 		if ($this->_mcrypt_mode == '')
 		{
@@ -498,11 +480,10 @@
 	/**
 	 * Set the Hash type
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function set_hash($type = 'sha1')
+	public function set_hash($type = 'sha1')
 	{
 		$this->_hash_type = ($type != 'sha1' AND $type != 'md5') ? 'sha1' : $type;
 	}
@@ -512,45 +493,13 @@
 	/**
 	 * Hash encode a string
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function hash($str)
+	public function hash($str)
 	{
-		return ($this->_hash_type == 'sha1') ? $this->sha1($str) : md5($str);
+		return ($this->_hash_type == 'sha1') ? sha1($str) : md5($str);
 	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Generate an SHA1 Hash
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */
-	function sha1($str)
-	{
-		if ( ! function_exists('sha1'))
-		{
-			if ( ! function_exists('mhash'))
-			{
-				require_once(BASEPATH.'libraries/Sha1.php');
-				$SH = new CI_SHA;
-				return $SH->generate($str);
-			}
-			else
-			{
-				return bin2hex(mhash(MHASH_SHA1, $str));
-			}
-		}
-		else
-		{
-			return sha1($str);
-		}
-	}
-
 }
 
 // END CI_Encrypt class
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 3f53232..0a6a2af 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -1,4 +1,4 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -78,7 +78,6 @@
 	 * This function takes an array of field names and validation
 	 * rules as input, validates the info, and stores it
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @param	string
 	 * @return	void
@@ -86,7 +85,7 @@
 	public function set_rules($field, $label = '', $rules = '')
 	{
 		// No reason to set rules if we have no POST data
-		if (count($_POST) == 0)
+		if (count($_POST) === 0)
 		{
 			return $this;
 		}
@@ -113,7 +112,7 @@
 		}
 
 		// No fields? Nothing to do...
-		if ( ! is_string($field) OR  ! is_string($rules) OR $field == '')
+		if ( ! is_string($field) OR ! is_string($rules) OR $field == '')
 		{
 			return $this;
 		}
@@ -121,21 +120,20 @@
 		// If the field label wasn't passed we use the field name
 		$label = ($label == '') ? $field : $label;
 
-		// Is the field name an array?  We test for the existence of a bracket "[" in
-		// the field name to determine this.  If it is an array, we break it apart
+		// Is the field name an array? If it is an array, we break it apart
 		// into its components so that we can fetch the corresponding POST data later
-		if (strpos($field, '[') !== FALSE AND preg_match_all('/\[(.*?)\]/', $field, $matches))
+		if (preg_match_all('/\[(.*?)\]/', $field, $matches))
 		{
 			// Note: Due to a bug in current() that affects some versions
 			// of PHP we can not pass function call directly into it
 			$x = explode('[', $field);
 			$indexes[] = current($x);
 
-			for ($i = 0; $i < count($matches['0']); $i++)
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
 			{
-				if ($matches['1'][$i] != '')
+				if ($matches[1][$i] != '')
 				{
-					$indexes[] = $matches['1'][$i];
+					$indexes[] = $matches[1][$i];
 				}
 			}
 
@@ -169,7 +167,6 @@
 	 * Lets users set their own error messages on the fly.  Note:  The key
 	 * name has to match the  function name that it corresponds to.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
@@ -193,7 +190,6 @@
 	 *
 	 * Permits a prefix/suffix to be added to each error message
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	void
@@ -213,7 +209,6 @@
 	 *
 	 * Gets the error message associated with a particular field
 	 *
-	 * @access	public
 	 * @param	string	the field name
 	 * @return	void
 	 */
@@ -244,7 +239,6 @@
 	 *
 	 * Returns the error messages as a string, wrapped in the error delimiters
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	str
@@ -287,23 +281,22 @@
 	 *
 	 * This function does all the work.
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function run($group = '')
 	{
 		// Do we even have any data to process?  Mm?
-		if (count($_POST) == 0)
+		if (count($_POST) === 0)
 		{
 			return FALSE;
 		}
 
 		// Does the _field_data array containing the validation rules exist?
 		// If not, we look to see if they were assigned via a config file
-		if (count($this->_field_data) == 0)
+		if (count($this->_field_data) === 0)
 		{
 			// No validation rules?  We're done...
-			if (count($this->_config_rules) == 0)
+			if (count($this->_config_rules) === 0)
 			{
 				return FALSE;
 			}
@@ -321,7 +314,7 @@
 			}
 
 			// We're we able to set the rules correctly?
-			if (count($this->_field_data) == 0)
+			if (count($this->_field_data) === 0)
 			{
 				log_message('debug', "Unable to find validation rules");
 				return FALSE;
@@ -338,7 +331,7 @@
 			// Fetch the data from the corresponding $_POST array and cache it in the _field_data array.
 			// Depending on whether the field name is an array or a string will determine where we get it from.
 
-			if ($row['is_array'] == TRUE)
+			if ($row['is_array'] === TRUE)
 			{
 				$this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']);
 			}
@@ -364,14 +357,7 @@
 		// Now we need to re-set the POST data with the new, processed data
 		$this->_reset_post_array();
 
-		// No errors, validation passes!
-		if ($total_errors == 0)
-		{
-			return TRUE;
-		}
-
-		// Validation fails
-		return FALSE;
+		return ($total_errors === 0);
 	}
 
 	// --------------------------------------------------------------------
@@ -379,7 +365,6 @@
 	/**
 	 * Traverse a multidimensional $_POST array index until the data is found
 	 *
-	 * @access	private
 	 * @param	array
 	 * @param	array
 	 * @param	integer
@@ -387,23 +372,9 @@
 	 */
 	protected function _reduce_array($array, $keys, $i = 0)
 	{
-		if (is_array($array))
+		if (is_array($array) && isset($keys[$i]))
 		{
-			if (isset($keys[$i]))
-			{
-				if (isset($array[$keys[$i]]))
-				{
-					$array = $this->_reduce_array($array[$keys[$i]], $keys, ($i+1));
-				}
-				else
-				{
-					return NULL;
-				}
-			}
-			else
-			{
-				return $array;
-			}
+			return isset($array[$keys[$i]]) ? $this->_reduce_array($array[$keys[$i]], $keys, ($i+1)) : NULL;
 		}
 
 		return $array;
@@ -414,7 +385,6 @@
 	/**
 	 * Re-populate the _POST array with our finalized and processed data
 	 *
-	 * @access	private
 	 * @return	null
 	 */
 	protected function _reset_post_array()
@@ -423,7 +393,7 @@
 		{
 			if ( ! is_null($row['postdata']))
 			{
-				if ($row['is_array'] == FALSE)
+				if ($row['is_array'] === FALSE)
 				{
 					if (isset($_POST[$row['field']]))
 					{
@@ -436,7 +406,7 @@
 					$post_ref =& $_POST;
 
 					// before we assign values, make a reference to the right POST key
-					if (count($row['keys']) == 1)
+					if (count($row['keys']) === 1)
 					{
 						$post_ref =& $post_ref[current($row['keys'])];
 					}
@@ -472,7 +442,6 @@
 	/**
 	 * Executes the Validation routines
 	 *
-	 * @access	private
 	 * @param	array
 	 * @param	array
 	 * @param	mixed
@@ -514,7 +483,7 @@
 		// --------------------------------------------------------------------
 
 		// Isset Test. Typically this rule will only apply to checkboxes.
-		if (is_null($postdata) AND $callback == FALSE)
+		if (is_null($postdata) AND $callback === FALSE)
 		{
 			if (in_array('isset', $rules, TRUE) OR in_array('required', $rules))
 			{
@@ -605,7 +574,7 @@
 				$result = $this->CI->$rule($postdata, $param);
 
 				// Re-assign the result to the master data array
-				if ($_in_array == TRUE)
+				if ($_in_array === TRUE)
 				{
 					$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 				}
@@ -630,7 +599,7 @@
 					{
 						$result = $rule($postdata);
 
-						if ($_in_array == TRUE)
+						if ($_in_array === TRUE)
 						{
 							$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 						}
@@ -649,7 +618,7 @@
 
 				$result = $this->$rule($postdata, $param);
 
-				if ($_in_array == TRUE)
+				if ($_in_array === TRUE)
 				{
 					$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
 				}
@@ -676,7 +645,7 @@
 
 				// Is the parameter we are inserting into the error message the name
 				// of another field?  If so we need to grab its "field label"
-				if (isset($this->_field_data[$param]) AND isset($this->_field_data[$param]['label']))
+				if (isset($this->_field_data[$param], $this->_field_data[$param]['label']))
 				{
 					$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
 				}
@@ -702,7 +671,6 @@
 	/**
 	 * Translate a field name
 	 *
-	 * @access	private
 	 * @param	string	the field name
 	 * @return	string
 	 */
@@ -710,7 +678,7 @@
 	{
 		// Do we need to translate the field name?
 		// We look for the prefix lang: to determine this
-		if (substr($fieldname, 0, 5) == 'lang:')
+		if (substr($fieldname, 0, 5) === 'lang:')
 		{
 			// Grab the variable
 			$line = substr($fieldname, 5);
@@ -733,7 +701,6 @@
 	 * Permits you to repopulate a form field with the value it was submitted
 	 * with, or, if that value doesn't exist, with the default
 	 *
-	 * @access	public
 	 * @param	string	the field name
 	 * @param	string
 	 * @return	void
@@ -763,7 +730,6 @@
 	 * Enables pull-down lists to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
@@ -807,7 +773,6 @@
 	 * Enables radio buttons to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
@@ -851,40 +816,14 @@
 	 * Enables checkboxes to be set to the value the user
 	 * selected in the event of an error
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
 	 */
 	public function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
-		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' checked="checked"';
-			}
-			return '';
-		}
-
-		$field = $this->_field_data[$field]['postdata'];
-
-		if (is_array($field))
-		{
-			if ( ! in_array($value, $field))
-			{
-				return '';
-			}
-		}
-		else
-		{
-			if (($field == '' OR $value == '') OR ($field != $value))
-			{
-				return '';
-			}
-		}
-
-		return ' checked="checked"';
+		// Logic is exactly the same as for radio fields
+		return $this->set_radio($field, $value, $default);
 	}
 
 	// --------------------------------------------------------------------
@@ -892,20 +831,12 @@
 	/**
 	 * Required
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function required($str)
 	{
-		if ( ! is_array($str))
-		{
-			return (trim($str) == '') ? FALSE : TRUE;
-		}
-		else
-		{
-			return ( ! empty($str));
-		}
+		return ( ! is_array($str)) ? (trim($str) !== '') : ( ! empty($str));
 	}
 
 	// --------------------------------------------------------------------
@@ -913,19 +844,13 @@
 	/**
 	 * Performs a Regular Expression match test.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	regex
 	 * @return	bool
 	 */
 	public function regex_match($str, $regex)
 	{
-		if ( ! preg_match($regex, $str))
-		{
-			return FALSE;
-		}
-
-		return  TRUE;
+		return (bool) preg_match($regex, $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -933,7 +858,6 @@
 	/**
 	 * Match one field to another
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	field
 	 * @return	bool
@@ -947,15 +871,17 @@
 
 		$field = $_POST[$field];
 
-		return ($str !== $field) ? FALSE : TRUE;
+		return ($str === $field);
 	}
 
 	// --------------------------------------------------------------------
 
 	/**
-	 * Match one field to another
+	 * Is Unique
 	 *
-	 * @access	public
+	 * Check if the input value doesn't already exist
+	 * in the specified database field.
+	 *
 	 * @param	string
 	 * @param	field
 	 * @return	bool
@@ -976,7 +902,6 @@
 	/**
 	 * Minimum Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
@@ -990,10 +915,10 @@
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) < $val) ? FALSE : TRUE;
+			return ! (mb_strlen($str) < $val);
 		}
 
-		return (strlen($str) < $val) ? FALSE : TRUE;
+		return ! (strlen($str) < $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1001,7 +926,6 @@
 	/**
 	 * Max Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
@@ -1015,10 +939,10 @@
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) > $val) ? FALSE : TRUE;
+			return ! (mb_strlen($str) > $val);
 		}
 
-		return (strlen($str) > $val) ? FALSE : TRUE;
+		return ! (strlen($str) > $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1026,7 +950,6 @@
 	/**
 	 * Exact Length
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	value
 	 * @return	bool
@@ -1040,10 +963,10 @@
 
 		if (function_exists('mb_strlen'))
 		{
-			return (mb_strlen($str) != $val) ? FALSE : TRUE;
+			return (mb_strlen($str) == $val);
 		}
 
-		return (strlen($str) != $val) ? FALSE : TRUE;
+		return (strlen($str) == $val);
 	}
 
 	// --------------------------------------------------------------------
@@ -1051,13 +974,12 @@
 	/**
 	 * Valid Email
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function valid_email($str)
 	{
-		return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1065,7 +987,6 @@
 	/**
 	 * Valid Emails
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1078,7 +999,7 @@
 
 		foreach (explode(',', $str) as $email)
 		{
-			if (trim($email) != '' && $this->valid_email(trim($email)) === FALSE)
+			if (trim($email) !== '' && $this->valid_email(trim($email)) === FALSE)
 			{
 				return FALSE;
 			}
@@ -1092,7 +1013,6 @@
 	/**
 	 * Validate IP Address
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1106,13 +1026,12 @@
 	/**
 	 * Alpha
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha($str)
 	{
-		return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1120,13 +1039,12 @@
 	/**
 	 * Alpha-numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha_numeric($str)
 	{
-		return ( ! preg_match("/^([a-z0-9])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z0-9]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1134,13 +1052,12 @@
 	/**
 	 * Alpha-numeric with underscores and dashes
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function alpha_dash($str)
 	{
-		return ( ! preg_match("/^([-a-z0-9_-])+$/i", $str)) ? FALSE : TRUE;
+		return (bool) preg_match('/^[a-z0-9_-]+$/i', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1148,13 +1065,12 @@
 	/**
 	 * Numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function numeric($str)
 	{
-		return (bool)preg_match( '/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
+		return (bool) preg_match('/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
 
 	}
 
@@ -1163,13 +1079,12 @@
 	/**
 	 * Is Numeric
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_numeric($str)
 	{
-		return ( ! is_numeric($str)) ? FALSE : TRUE;
+		return is_numeric($str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1177,7 +1092,6 @@
 	/**
 	 * Integer
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1191,7 +1105,6 @@
 	/**
 	 * Decimal number
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1205,7 +1118,6 @@
 	/**
 	 * Greather than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1223,7 +1135,6 @@
 	/**
 	 * Less than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1241,13 +1152,12 @@
 	/**
 	 * Is a Natural number  (0,1,2,3, etc.)
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_natural($str)
 	{
-		return (bool) preg_match( '/^[0-9]+$/', $str);
+		return (bool) preg_match('/^[0-9]+$/', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -1255,23 +1165,12 @@
 	/**
 	 * Is a Natural number, but not a zero  (1,2,3, etc.)
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
 	public function is_natural_no_zero($str)
 	{
-		if ( ! preg_match( '/^[0-9]+$/', $str))
-		{
-			return FALSE;
-		}
-
-		if ($str == 0)
-		{
-			return FALSE;
-		}
-
-		return TRUE;
+		return ($str != 0 AND preg_match('/^[0-9]+$/', $str));
 	}
 
 	// --------------------------------------------------------------------
@@ -1282,7 +1181,6 @@
 	 * Tests a string for characters outside of the Base64 alphabet
 	 * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -1299,7 +1197,6 @@
 	 * This function allows HTML to be safely shown in a form.
 	 * Special characters are converted.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1328,7 +1225,6 @@
 	/**
 	 * Prep URL
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1339,7 +1235,7 @@
 			return '';
 		}
 
-		if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://')
+		if (substr($str, 0, 7) !== 'http://' && substr($str, 0, 8) !== 'https://')
 		{
 			$str = 'http://'.$str;
 		}
@@ -1352,7 +1248,6 @@
 	/**
 	 * Strip Image Tags
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1366,7 +1261,6 @@
 	/**
 	 * XSS Clean
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -1380,7 +1274,6 @@
 	/**
 	 * Convert PHP tags to entities
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
index 99850a9..ab395b0 100644
--- a/system/libraries/Ftp.php
+++ b/system/libraries/Ftp.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 20ca1f0..c86224f 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -1,4 +1,4 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -67,8 +67,8 @@
 	public $wm_padding			= 0;			// Padding around text
 	public $wm_hor_offset		= 0;			// Lets you push text to the right
 	public $wm_vrt_offset		= 0;			// Lets you push  text down
-	public $wm_font_color		= '#ffffff';	// Text color
-	public $wm_shadow_color	= '';			// Dropshadow color
+	protected $wm_font_color		= '#ffffff';	// Text color
+	protected $wm_shadow_color		= '';	// Dropshadow color
 	public $wm_shadow_distance	= 2;			// Dropshadow distance
 	public $wm_opacity			= 50;			// Image opacity: 1 - 100  Only works with image
 
@@ -85,7 +85,7 @@
 	public $create_fnc			= 'imagecreatetruecolor';
 	public $copy_fnc			= 'imagecopyresampled';
 	public $error_msg			= array();
-	public $wm_use_drop_shadow	= FALSE;
+	protected $wm_use_drop_shadow	= FALSE;
 	public $wm_use_truetype	= FALSE;
 
 	/**
@@ -111,7 +111,6 @@
 	 *
 	 * Resets values in case this class is used in a loop
 	 *
-	 * @access	public
 	 * @return	void
 	 */
 	public function clear()
@@ -154,7 +153,6 @@
 	/**
 	 * initialize image preferences
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	bool
 	 */
@@ -167,7 +165,33 @@
 		{
 			foreach ($props as $key => $val)
 			{
-				$this->$key = $val;
+				if (property_exists($this, $key))
+				{
+					if (in_array($key, array('wm_font_color', 'wm_shadow_color')))
+					{
+						if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches))
+						{
+							/* $matches[1] contains our hex color value, but it might be
+							 * both in the full 6-length format or the shortened 3-length
+							 * value.
+							 * We'll later need the full version, so we keep it if it's
+							 * already there and if not - we'll convert to it. We can
+							 * access string characters by their index as in an array,
+							 * so we'll do that and use concatenation to form the final
+							 * value:
+							 */
+							$val = (strlen($matches[1]) === 6)
+								? '#'.$matches[1]
+								: '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2];
+						}
+						else
+						{
+							continue;
+						}
+					}
+
+					$this->$key = $val;
+				}
 			}
 		}
 
@@ -334,22 +358,6 @@
 		$this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis;
 
 		// Watermark-related Stuff...
-		if ($this->wm_font_color != '')
-		{
-			if (strlen($this->wm_font_color) == 6)
-			{
-				$this->wm_font_color = '#'.$this->wm_font_color;
-			}
-		}
-
-		if ($this->wm_shadow_color != '')
-		{
-			if (strlen($this->wm_shadow_color) == 6)
-			{
-				$this->wm_shadow_color = '#'.$this->wm_shadow_color;
-			}
-		}
-
 		if ($this->wm_overlay_path != '')
 		{
 			$this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path));
@@ -359,6 +367,10 @@
 		{
 			$this->wm_use_drop_shadow = TRUE;
 		}
+		elseif ($this->wm_use_drop_shadow == TRUE AND $this->wm_shadow_color == '')
+		{
+			$this->wm_use_drop_shadow = FALSE;
+		}
 
 		if ($this->wm_font_path != '')
 		{
@@ -376,18 +388,11 @@
 	 * This is a wrapper function that chooses the proper
 	 * resize function based on the protocol specified
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function resize()
 	{
-		$protocol = 'image_process_'.$this->image_library;
-
-		if (preg_match('/gd2$/i', $protocol))
-		{
-			$protocol = 'image_process_gd';
-		}
-
+		$protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
 		return $this->$protocol('resize');
 	}
 
@@ -399,18 +404,11 @@
 	 * This is a wrapper function that chooses the proper
 	 * cropping function based on the protocol specified
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function crop()
 	{
-		$protocol = 'image_process_'.$this->image_library;
-
-		if (preg_match('/gd2$/i', $protocol))
-		{
-			$protocol = 'image_process_gd';
-		}
-
+		$protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
 		return $this->$protocol('crop');
 	}
 
@@ -422,7 +420,6 @@
 	 * This is a wrapper function that chooses the proper
 	 * rotation function based on the protocol specified
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function rotate()
@@ -453,7 +450,6 @@
 		if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm')
 		{
 			$protocol = 'image_process_'.$this->image_library;
-
 			return $this->$protocol('rotate');
 		}
 
@@ -474,7 +470,6 @@
 	 *
 	 * This function will resize or crop
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -484,20 +479,14 @@
 
 		// If the target width/height match the source, AND if the new file name is not equal to the old file name
 		// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
-		if ($this->dynamic_output === FALSE)
+		if ($this->dynamic_output === FALSE AND $this->orig_width == $this->width AND $this->orig_height == $this->height)
 		{
-			if ($this->orig_width == $this->width AND $this->orig_height == $this->height)
+			if ($this->source_image != $this->new_image AND @copy($this->full_src_path, $this->full_dst_path))
 			{
-				if ($this->source_image != $this->new_image)
-				{
-					if (@copy($this->full_src_path, $this->full_dst_path))
-					{
-						@chmod($this->full_dst_path, FILE_WRITE_MODE);
-					}
-				}
-
-				return TRUE;
+				@chmod($this->full_dst_path, FILE_WRITE_MODE);
 			}
+
+			return TRUE;
 		}
 
 		// Let's set up our values based on the action
@@ -586,7 +575,6 @@
 	 *
 	 * This function will resize, crop or rotate
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -601,9 +589,7 @@
 
 		if ( ! preg_match("/convert$/i", $this->library_path))
 		{
-			$this->library_path = rtrim($this->library_path, '/').'/';
-
-			$this->library_path .= 'convert';
+			$this->library_path = rtrim($this->library_path, '/').'/convert';
 		}
 
 		// Execute the command
@@ -656,7 +642,6 @@
 	 *
 	 * This function will resize, crop or rotate
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -740,7 +725,6 @@
 	/**
 	 * Image Rotate Using GD
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function image_rotate_gd()
@@ -793,7 +777,6 @@
 	 *
 	 * This function will flip horizontal or vertical
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function image_mirror_gd()
@@ -808,11 +791,8 @@
 
 		if ($this->rotation_angle == 'hor')
 		{
-			for ($i = 0; $i < $height; $i++)
+			for ($i = 0; $i < $height; $i++, $left = 0, $right = $width-1)
 			{
-				$left  = 0;
-				$right = $width-1;
-
 				while ($left < $right)
 				{
 					$cl = imagecolorat($src_img, $left, $i);
@@ -828,11 +808,8 @@
 		}
 		else
 		{
-			for ($i = 0; $i < $width; $i++)
+			for ($i = 0; $i < $width; $i++, $top = 0, $bot = $height-1)
 			{
-				$top = 0;
-				$bot = $height-1;
-
 				while ($top < $bot)
 				{
 					$ct = imagecolorat($src_img, $i, $top);
@@ -878,7 +855,6 @@
 	 * This is a wrapper function that chooses the type
 	 * of watermarking based on the specified preference.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
@@ -899,7 +875,6 @@
 	/**
 	 * Watermark - Graphic Version
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function overlay_watermark()
@@ -993,12 +968,9 @@
 		{
 			$this->image_display_gd($src_img);
 		}
-		else
+		elseif ( ! $this->image_save_gd($src_img))
 		{
-			if ( ! $this->image_save_gd($src_img))
-			{
-				return FALSE;
-			}
+			return FALSE;
 		}
 
 		imagedestroy($src_img);
@@ -1012,7 +984,6 @@
 	/**
 	 * Watermark - Text Version
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function text_watermark()
@@ -1031,21 +1002,6 @@
 		//  Fetch source image properties
 		$this->get_image_properties();
 
-		// Set RGB values for text and shadow
-		$this->wm_font_color	= str_replace('#', '', $this->wm_font_color);
-		$this->wm_shadow_color	= str_replace('#', '', $this->wm_shadow_color);
-
-		$R1 = hexdec(substr($this->wm_font_color, 0, 2));
-		$G1 = hexdec(substr($this->wm_font_color, 2, 2));
-		$B1 = hexdec(substr($this->wm_font_color, 4, 2));
-
-		$R2 = hexdec(substr($this->wm_shadow_color, 0, 2));
-		$G2 = hexdec(substr($this->wm_shadow_color, 2, 2));
-		$B2 = hexdec(substr($this->wm_shadow_color, 4, 2));
-
-		$txt_color	= imagecolorclosest($src_img, $R1, $G1, $B1);
-		$drp_color	= imagecolorclosest($src_img, $R2, $G2, $B2);
-
 		// Reverse the vertical offset
 		// When the image is positioned at the bottom
 		// we don't want the vertical offset to push it
@@ -1065,7 +1021,9 @@
 		if ($this->wm_use_truetype == TRUE)
 		{
 			if ($this->wm_font_size == '')
-				$this->wm_font_size = '17';
+			{
+				$this->wm_font_size = 17;
+			}
 
 			$fontwidth  = $this->wm_font_size-($this->wm_font_size/4);
 			$fontheight = $this->wm_font_size;
@@ -1090,11 +1048,11 @@
 
 		switch ($this->wm_vrt_alignment)
 		{
-			case	 "T" :
+			case 'T':
 				break;
-			case "M":	$y_axis += ($this->orig_height/2)+($fontheight/2);
+			case 'M':	$y_axis += ($this->orig_height/2)+($fontheight/2);
 				break;
-			case "B":	$y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2));
+			case 'B':	$y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2));
 				break;
 		}
 
@@ -1104,32 +1062,48 @@
 		// Set horizontal alignment
 		switch ($this->wm_hor_alignment)
 		{
-			case "L":
+			case 'L':
 				break;
-			case "R":
-						if ($this->wm_use_drop_shadow)
-							$x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text));
-							$x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+			case 'R':
+				if ($this->wm_use_drop_shadow)
+				{
+					$x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+					$x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+				}
 				break;
-			case "C":
-						if ($this->wm_use_drop_shadow)
-							$x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
-							$x_axis += floor(($this->orig_width  -$fontwidth*strlen($this->wm_text))/2);
+			case 'C':
+				if ($this->wm_use_drop_shadow)
+				{
+					$x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
+					$x_axis += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
+				}
 				break;
 		}
 
-		//  Add the text to the source image
-		if ($this->wm_use_truetype)
+		if ($this->wm_use_drop_shadow)
 		{
-			if ($this->wm_use_drop_shadow)
+			/* Set RGB values for text and shadow
+			 *
+			 * First character is #, so we don't really need it.
+			 * Get the rest of the string and split it into 2-length
+			 * hex values:
+			 */
+			$txt_color = str_split(substr($this->wm_font_color, 1, 6), 2);
+			$txt_color = imagecolorclosest($src_img, hexdec($txt_color[0]), hexdec($txt_color[1]), hexdec($txt_color[2]));
+			$drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2);
+			$drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[2]), hexdec($drp_color[3]));
+
+			//  Add the text to the source image
+			if ($this->wm_use_truetype)
+			{
 				imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
 				imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text);
-		}
-		else
-		{
-			if ($this->wm_use_drop_shadow)
+			}
+			else
+			{
 				imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color);
 				imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color);
+			}
 		}
 
 		//  Output the final image
@@ -1155,7 +1129,6 @@
 	 * This simply creates an image resource handle
 	 * based on the type of image being processed
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	resource
 	 */
@@ -1212,7 +1185,6 @@
 	 * Takes an image resource as input and writes the file
 	 * to the specified destination
 	 *
-	 * @access	public
 	 * @param	resource
 	 * @return	bool
 	 */
@@ -1273,7 +1245,6 @@
 	/**
 	 * Dynamically outputs an image
 	 *
-	 * @access	public
 	 * @param	resource
 	 * @return	void
 	 */
@@ -1309,7 +1280,6 @@
 	 * This function lets us re-proportion the width/height
 	 * if users choose to maintain the aspect ratio when resizing.
 	 *
-	 * @access	public
 	 * @return	void
 	 */
 	public function image_reproportion()
@@ -1350,7 +1320,6 @@
 	 *
 	 * A helper function that gets info about the file
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	mixed
 	 */
@@ -1369,26 +1338,24 @@
 		}
 
 		$vals = getimagesize($path);
-
 		$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
-
-		$mime = (isset($types[$vals['2']])) ? 'image/'.$types[$vals['2']] : 'image/jpg';
+		$mime = (isset($types[$vals[2]])) ? 'image/'.$types[$vals[2]] : 'image/jpg';
 
 		if ($return == TRUE)
 		{
-			$v['width']			= $vals['0'];
-			$v['height']		= $vals['1'];
-			$v['image_type']	= $vals['2'];
-			$v['size_str']		= $vals['3'];
-			$v['mime_type']		= $mime;
-
-			return $v;
+			return array(
+					'width' =>	$vals[0],
+					'height' =>	$vals[1],
+					'image_type' =>	$vals[2],
+					'size_str' =>	$vals[3],
+					'mime_type' =>	$mime
+				);
 		}
 
-		$this->orig_width	= $vals['0'];
-		$this->orig_height	= $vals['1'];
-		$this->image_type	= $vals['2'];
-		$this->size_str		= $vals['3'];
+		$this->orig_width	= $vals[0];
+		$this->orig_height	= $vals[1];
+		$this->image_type	= $vals[2];
+		$this->size_str		= $vals[3];
 		$this->mime_type	= $mime;
 
 		return TRUE;
@@ -1410,7 +1377,6 @@
 	 *					'new_height'	=> ''
 	 *				  );
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	array
 	 */
@@ -1458,7 +1424,6 @@
 	 * $array['ext']  = '.jpg';
 	 * $array['name'] = 'my.cool';
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	array
 	 */
@@ -1475,17 +1440,16 @@
 	/**
 	 * Is GD Installed?
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function gd_loaded()
 	{
 		if ( ! extension_loaded('gd'))
 		{
-			if ( ! dl('gd.so'))
-			{
-				return FALSE;
-			}
+			/* As it is stated in the PHP manual, dl() is not always available
+			 * and even if so - it could generate an E_WARNING message on failure
+			 */
+			return (function_exists('dl') AND @dl('gd.so'));
 		}
 
 		return TRUE;
@@ -1496,7 +1460,6 @@
 	/**
 	 * Get GD version
 	 *
-	 * @access	public
 	 * @return	mixed
 	 */
 	public function gd_version()
@@ -1517,7 +1480,6 @@
 	/**
 	 * Set error message
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
@@ -1549,7 +1511,6 @@
 	/**
 	 * Show error messages
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
diff --git a/system/libraries/Javascript.php b/system/libraries/Javascript.php
index 15887cb..33df600 100644
--- a/system/libraries/Javascript.php
+++ b/system/libraries/Javascript.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -38,7 +38,7 @@
  */
 class CI_Javascript {
 
-	var $_javascript_location = 'js';
+	protected $_javascript_location = 'js';
 
 	public function __construct($params = array())
 	{
@@ -64,7 +64,7 @@
 		log_message('debug', "Javascript Class Initialized and loaded.  Driver used: $js_library_driver");
 	}
 
-	// --------------------------------------------------------------------	
+	// --------------------------------------------------------------------
 	// Event Code
 	// --------------------------------------------------------------------
 
@@ -73,12 +73,11 @@
 	 *
 	 * Outputs a javascript library blur event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function blur($element = 'this', $js = '')
+	public function blur($element = 'this', $js = '')
 	{
 		return $this->js->_blur($element, $js);
 	}
@@ -90,12 +89,11 @@
 	 *
 	 * Outputs a javascript library change event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function change($element = 'this', $js = '')
+	public function change($element = 'this', $js = '')
 	{
 		return $this->js->_change($element, $js);
 	}
@@ -107,13 +105,12 @@
 	 *
 	 * Outputs a javascript library click event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @param	boolean	whether or not to return false
 	 * @return	string
 	 */
-	function click($element = 'this', $js = '', $ret_false = TRUE)
+	public function click($element = 'this', $js = '', $ret_false = TRUE)
 	{
 		return $this->js->_click($element, $js, $ret_false);
 	}
@@ -125,12 +122,11 @@
 	 *
 	 * Outputs a javascript library dblclick event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function dblclick($element = 'this', $js = '')
+	public function dblclick($element = 'this', $js = '')
 	{
 		return $this->js->_dblclick($element, $js);
 	}
@@ -142,12 +138,11 @@
 	 *
 	 * Outputs a javascript library error event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function error($element = 'this', $js = '')
+	public function error($element = 'this', $js = '')
 	{
 		return $this->js->_error($element, $js);
 	}
@@ -159,12 +154,11 @@
 	 *
 	 * Outputs a javascript library focus event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function focus($element = 'this', $js = '')
+	public function focus($element = 'this', $js = '')
 	{
 		return $this->js->__add_event($focus, $js);
 	}
@@ -176,13 +170,12 @@
 	 *
 	 * Outputs a javascript library hover event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- Javascript code for mouse over
 	 * @param	string	- Javascript code for mouse out
 	 * @return	string
 	 */
-	function hover($element = 'this', $over, $out)
+	public function hover($element = 'this', $over, $out)
 	{
 		return $this->js->__hover($element, $over, $out);
 	}
@@ -194,12 +187,11 @@
 	 *
 	 * Outputs a javascript library keydown event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function keydown($element = 'this', $js = '')
+	public function keydown($element = 'this', $js = '')
 	{
 		return $this->js->_keydown($element, $js);
 	}
@@ -211,12 +203,11 @@
 	 *
 	 * Outputs a javascript library keydown event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function keyup($element = 'this', $js = '')
+	public function keyup($element = 'this', $js = '')
 	{
 		return $this->js->_keyup($element, $js);
 	}
@@ -228,12 +219,11 @@
 	 *
 	 * Outputs a javascript library load event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function load($element = 'this', $js = '')
+	public function load($element = 'this', $js = '')
 	{
 		return $this->js->_load($element, $js);
 	}
@@ -245,12 +235,11 @@
 	 *
 	 * Outputs a javascript library mousedown event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function mousedown($element = 'this', $js = '')
+	public function mousedown($element = 'this', $js = '')
 	{
 		return $this->js->_mousedown($element, $js);
 	}
@@ -262,12 +251,11 @@
 	 *
 	 * Outputs a javascript library mouseout event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function mouseout($element = 'this', $js = '')
+	public function mouseout($element = 'this', $js = '')
 	{
 		return $this->js->_mouseout($element, $js);
 	}
@@ -279,12 +267,11 @@
 	 *
 	 * Outputs a javascript library mouseover event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function mouseover($element = 'this', $js = '')
+	public function mouseover($element = 'this', $js = '')
 	{
 		return $this->js->_mouseover($element, $js);
 	}
@@ -296,12 +283,11 @@
 	 *
 	 * Outputs a javascript library mouseup event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function mouseup($element = 'this', $js = '')
+	public function mouseup($element = 'this', $js = '')
 	{
 		return $this->js->_mouseup($element, $js);
 	}
@@ -313,11 +299,10 @@
 	 *
 	 * Outputs the called javascript to the screen
 	 *
-	 * @access	public
 	 * @param	string	The code to output
 	 * @return	string
 	 */
-	function output($js)
+	public function output($js)
 	{
 		return $this->js->_output($js);
 	}
@@ -329,12 +314,11 @@
 	 *
 	 * Outputs a javascript library mouseup event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function ready($js)
+	public function ready($js)
 	{
 		return $this->js->_document_ready($js);
 	}
@@ -346,12 +330,11 @@
 	 *
 	 * Outputs a javascript library resize event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function resize($element = 'this', $js = '')
+	public function resize($element = 'this', $js = '')
 	{
 		return $this->js->_resize($element, $js);
 	}
@@ -363,12 +346,11 @@
 	 *
 	 * Outputs a javascript library scroll event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function scroll($element = 'this', $js = '')
+	public function scroll($element = 'this', $js = '')
 	{
 		return $this->js->_scroll($element, $js);
 	}
@@ -380,17 +362,16 @@
 	 *
 	 * Outputs a javascript library unload event
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function unload($element = 'this', $js = '')
+	public function unload($element = 'this', $js = '')
 	{
 		return $this->js->_unload($element, $js);
 	}
 
-	// --------------------------------------------------------------------	
+	// --------------------------------------------------------------------
 	// Effects
 	// --------------------------------------------------------------------
 
@@ -400,12 +381,11 @@
 	 *
 	 * Outputs a javascript library addClass event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- Class to add
 	 * @return	string
 	 */
-	function addClass($element = 'this', $class = '')
+	public function addClass($element = 'this', $class = '')
 	{
 		return $this->js->_addClass($element, $class);
 	}
@@ -417,13 +397,12 @@
 	 *
 	 * Outputs a javascript library animate event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function animate($element = 'this', $params = array(), $speed = '', $extra = '')
+	public function animate($element = 'this', $params = array(), $speed = '', $extra = '')
 	{
 		return $this->js->_animate($element, $params, $speed, $extra);
 	}
@@ -435,13 +414,12 @@
 	 *
 	 * Outputs a javascript library hide event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function fadeIn($element = 'this', $speed = '', $callback = '')
+	public function fadeIn($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_fadeIn($element, $speed, $callback);
 	}
@@ -453,13 +431,12 @@
 	 *
 	 * Outputs a javascript library hide event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function fadeOut($element = 'this', $speed = '', $callback = '')
+	public function fadeOut($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_fadeOut($element, $speed, $callback);
 	}
@@ -470,13 +447,12 @@
 	 *
 	 * Outputs a javascript library slideUp event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function slideUp($element = 'this', $speed = '', $callback = '')
+	public function slideUp($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_slideUp($element, $speed, $callback);
 
@@ -489,12 +465,11 @@
 	 *
 	 * Outputs a javascript library removeClass event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- Class to add
 	 * @return	string
 	 */
-	function removeClass($element = 'this', $class = '')
+	public function removeClass($element = 'this', $class = '')
 	{
 		return $this->js->_removeClass($element, $class);
 	}
@@ -506,13 +481,12 @@
 	 *
 	 * Outputs a javascript library slideDown event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function slideDown($element = 'this', $speed = '', $callback = '')
+	public function slideDown($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_slideDown($element, $speed, $callback);
 	}
@@ -524,13 +498,12 @@
 	 *
 	 * Outputs a javascript library slideToggle event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function slideToggle($element = 'this', $speed = '', $callback = '')
+	public function slideToggle($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_slideToggle($element, $speed, $callback);
 
@@ -543,13 +516,12 @@
 	 *
 	 * Outputs a javascript library hide action
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function hide($element = 'this', $speed = '', $callback = '')
+	public function hide($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_hide($element, $speed, $callback);
 	}
@@ -561,11 +533,10 @@
 	 *
 	 * Outputs a javascript library toggle event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function toggle($element = 'this')
+	public function toggle($element = 'this')
 	{
 		return $this->js->_toggle($element);
 
@@ -578,11 +549,10 @@
 	 *
 	 * Outputs a javascript library toggle class event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function toggleClass($element = 'this', $class='')
+	public function toggleClass($element = 'this', $class='')
 	{
 		return $this->js->_toggleClass($element, $class);
 	}
@@ -594,13 +564,12 @@
 	 *
 	 * Outputs a javascript library show event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function show($element = 'this', $speed = '', $callback = '')
+	public function show($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_show($element, $speed, $callback);
 	}
@@ -613,11 +582,10 @@
 	 *
 	 * gather together all script needing to be output
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @return	string
 	 */
-	function compile($view_var = 'script_foot', $script_tags = TRUE)
+	public function compile($view_var = 'script_foot', $script_tags = TRUE)
 	{
 		$this->js->_compile($view_var, $script_tags);
 	}
@@ -627,10 +595,9 @@
 	 *
 	 * Clears any previous javascript collected for output
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function clear_compile()
+	public function clear_compile()
 	{
 		$this->js->_clear_compile();
 	}
@@ -642,11 +609,10 @@
 	 *
 	 * Outputs a <script> tag with the source as an external js file
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @return	string
 	 */
-	function external($external_file = '', $relative = FALSE)
+	public function external($external_file = '', $relative = FALSE)
 	{
 		if ($external_file !== '')
 		{
@@ -660,7 +626,7 @@
 			}
 		}
 
-		if ($relative === TRUE OR strncmp($external_file, 'http://', 7) == 0 OR strncmp($external_file, 'https://', 8) == 0)
+		if ($relative === TRUE OR strncmp($external_file, 'http://', 7) === 0 OR strncmp($external_file, 'https://', 8) === 0)
 		{
 			$str = $this->_open_script($external_file);
 		}
@@ -673,8 +639,7 @@
 			$str = $this->_open_script($this->CI->config->slash_item('base_url').$this->_javascript_location.$external_file);
 		}
 
-		$str .= $this->_close_script();
-		return $str;
+		return $str.$this->_close_script();
 	}
 
 	// --------------------------------------------------------------------
@@ -684,20 +649,17 @@
 	 *
 	 * Outputs a <script> tag
 	 *
-	 * @access	public
 	 * @param	string	The element to attach the event to
 	 * @param	boolean	If a CDATA section should be added
 	 * @return	string
 	 */
-	function inline($script, $cdata = TRUE)
+	public function inline($script, $cdata = TRUE)
 	{
-		$str = $this->_open_script();
-		$str .= ($cdata) ? "\n// <![CDATA[\n{$script}\n// ]]>\n" : "\n{$script}\n";
-		$str .= $this->_close_script();
-
-		return $str;
+		return $this->_open_script()
+			. ($cdata ? "\n// <![CDATA[\n{$script}\n// ]]>\n" : "\n{$script}\n")
+			. $this->_close_script();
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -705,15 +667,13 @@
 	 *
 	 * Outputs an opening <script>
 	 *
-	 * @access	private
 	 * @param	string
 	 * @return	string
 	 */
-	function _open_script($src = '')
+	protected function _open_script($src = '')
 	{
-		$str = '<script type="text/javascript" charset="'.strtolower($this->CI->config->item('charset')).'"';
-		$str .= ($src == '') ? '>' : ' src="'.$src.'">';
-		return $str;
+		return '<script type="text/javascript" charset="'.strtolower($this->CI->config->item('charset')).'"'
+			. ($src == '' ? '>' : ' src="'.$src.'">');
 	}
 
 	// --------------------------------------------------------------------
@@ -723,11 +683,10 @@
 	 *
 	 * Outputs an closing </script>
 	 *
-	 * @access	private
 	 * @param	string
 	 * @return	string
 	 */
-	function _close_script($extra = "\n")
+	protected function _close_script($extra = "\n")
 	{
 		return "</script>$extra";
 	}
@@ -744,13 +703,12 @@
 	 *
 	 * Outputs a javascript library slideDown event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function update($element = 'this', $speed = '', $callback = '')
+	public function update($element = 'this', $speed = '', $callback = '')
 	{
 		return $this->js->_updater($element, $speed, $callback);
 	}
@@ -766,7 +724,7 @@
 	 * @param	bool	match array types (defaults to objects)
 	 * @return	string	a json formatted string
 	 */
-	function generate_json($result = NULL, $match_array_type = FALSE)
+	public function generate_json($result = NULL, $match_array_type = FALSE)
 	{
 		// JSON data can optionally be passed to this function
 		// either as a database result object or an array, or a user supplied array
@@ -827,11 +785,10 @@
 	 *
 	 * Checks for an associative array
 	 *
-	 * @access	public
 	 * @param	type
 	 * @return	type
 	 */
-	function _is_associative_array($arr)
+	protected function _is_associative_array($arr)
 	{
 		foreach (array_keys($arr) as $key => $val)
 		{
@@ -851,11 +808,10 @@
 	 *
 	 * Ensures a standard json value and escapes values
 	 *
-	 * @access	public
 	 * @param	type
 	 * @return	type
 	 */
-	function _prep_args($result, $is_key = FALSE)
+	protected function _prep_args($result, $is_key = FALSE)
 	{
 		if (is_null($result))
 		{
@@ -867,7 +823,7 @@
 		}
 		elseif (is_string($result) OR $is_key)
 		{
-			return '"'.str_replace(array('\\', "\t", "\n", "\r", '"', '/'), array('\\\\', '\\t', '\\n', "\\r", '\"', '\/'), $result).'"';			
+			return '"'.str_replace(array('\\', "\t", "\n", "\r", '"', '/'), array('\\\\', '\\t', '\\n', "\\r", '\"', '\/'), $result).'"';
 		}
 		elseif (is_scalar($result))
 		{
@@ -880,4 +836,4 @@
 // END Javascript Class
 
 /* End of file Javascript.php */
-/* Location: ./system/libraries/Javascript.php */
\ No newline at end of file
+/* Location: ./system/libraries/Javascript.php */
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 7f3a307..944173f 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
index eb5161d..d070972 100644
--- a/system/libraries/Migration.php
+++ b/system/libraries/Migration.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2006 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2006 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 3.0
@@ -322,7 +322,7 @@
 	 */
 	protected function _get_version()
 	{
-		$row = $this->db->get($this->_migration_table)->row();
+		$row = $this->db->select('version')->get($this->_migration_table)->row();
 		return $row ? $row->version : 0;
 	}
 
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
index eea953a..c59151b 100644
--- a/system/libraries/Pagination.php
+++ b/system/libraries/Pagination.php
@@ -1,4 +1,4 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -131,7 +131,7 @@
 		$num_pages = ceil($this->total_rows / $this->per_page);
 
 		// Is there only one page? Hm... nothing more to do here then.
-		if ($num_pages == 1)
+		if ($num_pages === 1)
 		{
 			return '';
 		}
@@ -142,45 +142,37 @@
 		// Determine the current page number.
 		$CI =& get_instance();
 
+		// See if we are using a prefix or suffix on links
+		if ($this->prefix != '' OR $this->suffix != '')
+		{
+			$this->cur_page = (int) str_replace(array($this->prefix, $this->suffix), '', $CI->uri->segment($this->uri_segment));
+		}
+
 		if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
 		{
 			if ($CI->input->get($this->query_string_segment) != $base_page)
 			{
-				$this->cur_page = $CI->input->get($this->query_string_segment);
-
-				// Prep the current page - no funny business!
-				$this->cur_page = (int) $this->cur_page;
+				$this->cur_page = (int) $CI->input->get($this->query_string_segment);
 			}
 		}
-		else
+		elseif ( ! $this->cur_page AND $CI->uri->segment($this->uri_segment) != $base_page)
 		{
-			if ($CI->uri->segment($this->uri_segment) != $base_page)
-			{
-				$this->cur_page = $CI->uri->segment($this->uri_segment);
-
-				// Prep the current page - no funny business!
-				$this->cur_page = (int) $this->cur_page;
-			}
+			$this->cur_page = (int) $CI->uri->segment($this->uri_segment);
 		}
 
-		// Set current page to 1 if using page numbers instead of offset
-		if ($this->use_page_numbers AND $this->cur_page == 0)
+		// Set current page to 1 if it's not valid or if using page numbers instead of offset
+		if ( ! is_numeric($this->cur_page) OR ($this->use_page_numbers AND $this->cur_page == 0))
 		{
 			$this->cur_page = $base_page;
 		}
 
-		$this->num_links = (int)$this->num_links;
+		$this->num_links = (int) $this->num_links;
 
 		if ($this->num_links < 1)
 		{
 			show_error('Your number of links must be a positive number.');
 		}
 
-		if ( ! is_numeric($this->cur_page))
-		{
-			$this->cur_page = $base_page;
-		}
-
 		// Is the page number beyond the result range?
 		// If so we show the last page
 		if ($this->use_page_numbers)
@@ -236,13 +228,13 @@
 		{
 			$i = ($this->use_page_numbers) ? $uri_page_number - 1 : $uri_page_number - $this->per_page;
 
-			if (($i == 0 OR ($this->use_page_numbers && $i == 1)) AND $this->first_url != '')
+			if ($i == $base_page AND $this->first_url != '')
 			{
 				$output .= $this->prev_tag_open.'<a '.$this->anchor_class.'href="'.$this->first_url.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
 			}
 			else
 			{
-				$i = ($i == 0) ? '' : $this->prefix.$i.$this->suffix;
+				$i = ($i == $base_page) ? '' : $this->prefix.$i.$this->suffix;
 				$output .= $this->prev_tag_open.'<a '.$this->anchor_class.'href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
 			}
 
@@ -310,4 +302,4 @@
 // END Pagination Class
 
 /* End of file Pagination.php */
-/* Location: ./system/libraries/Pagination.php */
\ No newline at end of file
+/* Location: ./system/libraries/Pagination.php */
diff --git a/system/libraries/Parser.php b/system/libraries/Parser.php
index 39aa61e..3212482 100644
--- a/system/libraries/Parser.php
+++ b/system/libraries/Parser.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
index 8a2568d..89c6165 100644
--- a/system/libraries/Profiler.php
+++ b/system/libraries/Profiler.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -126,12 +126,10 @@
 		{
 			// We match the "end" marker so that the list ends
 			// up in the order that it was defined
-			if (preg_match("/(.+?)_end/i", $key, $match))
+			if (preg_match('/(.+?)_end/i', $key, $match)
+				AND isset($this->CI->benchmark->marker[$match[1].'_end'], $this->CI->benchmark->marker[$match[1].'_start']))
 			{
-				if (isset($this->CI->benchmark->marker[$match[1].'_end']) AND isset($this->CI->benchmark->marker[$match[1].'_start']))
-				{
-					$profile[$match[1]] = $this->CI->benchmark->elapsed_time($match[1].'_start', $key);
-				}
+				$profile[$match[1]] = $this->CI->benchmark->elapsed_time($match[1].'_start', $key);
 			}
 		}
 
@@ -139,12 +137,11 @@
 		// Note: At some point we should turn this into a template that can
 		// be modified.  We also might want to make this data available to be logged
 
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_benchmarks" style="border:1px solid #900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_benchmarks').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
-		$output .= "\n\n<table style='width:100%'>\n";
+		$output = "\n\n"
+			. '<fieldset id="ci_profiler_benchmarks" style="border:1px solid #900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_benchmarks').'&nbsp;&nbsp;</legend>'
+			. "\n\n\n<table style='width:100%'>\n";
 
 		foreach ($profile as $key => $val)
 		{
@@ -152,10 +149,7 @@
 			$output .= "<tr><td style='padding:5px;width:50%;color:#000;font-weight:bold;background-color:#ddd;'>".$key."&nbsp;&nbsp;</td><td style='padding:5px;width:50%;color:#900;font-weight:normal;background-color:#ddd;'>".$val."</td></tr>\n";
 		}
 
-		$output .= "</table>\n";
-		$output .= "</fieldset>";
-
-		return $output;
+		return $output."</table>\n</fieldset>";
 	}
 
 	// --------------------------------------------------------------------
@@ -178,19 +172,16 @@
 			}
 		}
 
-		if (count($dbs) == 0)
+		if (count($dbs) === 0)
 		{
-			$output  = "\n\n";
-			$output .= '<fieldset id="ci_profiler_queries" style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-			$output .= "\n";
-			$output .= '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').'&nbsp;&nbsp;</legend>';
-			$output .= "\n";
-			$output .= "\n\n<table style='border:none; width:100%;'>\n";
-			$output .="<tr><td style='width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px'>".$this->CI->lang->line('profiler_no_db')."</td></tr>\n";
-			$output .= "</table>\n";
-			$output .= "</fieldset>";
-
-			return $output;
+			return "\n\n"
+				. '<fieldset id="ci_profiler_queries" style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee;">'
+				. "\n"
+				. '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').'&nbsp;&nbsp;</legend>'
+				. "\n\n\n<table style='border:none; width:100%;'>\n"
+				. '<tr><td style="width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;">'
+				. $this->CI->lang->line('profiler_no_db')
+				. "</td></tr>\n</table>\n</fieldset>";
 		}
 
 		// Load the text helper so we can highlight the SQL
@@ -205,8 +196,6 @@
 
 		foreach ($dbs as $db)
 		{
-			$count++;
-
 			$hide_queries = (count($db->queries) > $this->_query_toggle_count) ? ' display:none' : '';
 
 			$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_hide').'\'?\''.$this->CI->lang->line('profiler_section_show').'\':\''.$this->CI->lang->line('profiler_section_hide').'\';">'.$this->CI->lang->line('profiler_section_hide').'</span>)';
@@ -216,13 +205,12 @@
 				$show_hide_js = '(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_queries_db_'.$count.'\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)';
 			}
 
-			$output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-			$output .= "\n";
-			$output .= '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_database').':&nbsp; '.$db->database.'&nbsp;&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').': '.count($db->queries).'&nbsp;&nbsp;'.$show_hide_js.'</legend>';
-			$output .= "\n";
-			$output .= "\n\n<table style='width:100%;{$hide_queries}' id='ci_profiler_queries_db_{$count}'>\n";
+			$output .= '<fieldset style="border:1px solid #0000FF;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+				. "\n"
+				. '<legend style="color:#0000FF;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_database').':&nbsp; '.$db->database.'&nbsp;&nbsp;&nbsp;'.$this->CI->lang->line('profiler_queries').': '.count($db->queries).'&nbsp;&nbsp;'.$show_hide_js.'</legend>'
+				. "\n\n\n<table style='width:100%;{$hide_queries}' id='ci_profiler_queries_db_{$count}'>\n";
 
-			if (count($db->queries) == 0)
+			if (count($db->queries) === 0)
 			{
 				$output .= "<tr><td style='width:100%;color:#0000FF;font-weight:normal;background-color:#eee;padding:5px;'>".$this->CI->lang->line('profiler_no_queries')."</td></tr>\n";
 			}
@@ -243,8 +231,7 @@
 				}
 			}
 
-			$output .= "</table>\n";
-			$output .= "</fieldset>";
+			$output .= "</table>\n</fieldset>";
 
 		}
 
@@ -261,13 +248,13 @@
 	 */
 	protected function _compile_get()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_get" style="border:1px solid #cd6e00;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#cd6e00;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_get_data').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
+		$output  = "\n\n"
+			. '<fieldset id="ci_profiler_get" style="border:1px solid #cd6e00;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#cd6e00;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_get_data').'&nbsp;&nbsp;</legend>'
+			. "\n";
 
-		if (count($_GET) == 0)
+		if (count($_GET) === 0)
 		{
 			$output .= "<div style='color:#cd6e00;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_get')."</div>";
 		}
@@ -282,23 +269,15 @@
 					$key = "'".$key."'";
 				}
 
-				$output .= "<tr><td style='width:50%;color:#000;background-color:#ddd;padding:5px'>&#36;_GET[".$key."]&nbsp;&nbsp; </td><td style='width:50%;padding:5px;color:#cd6e00;font-weight:normal;background-color:#ddd;'>";
-				if (is_array($val))
-				{
-					$output .= "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>";
-				}
-				else
-				{
-					$output .= htmlspecialchars(stripslashes($val));
-				}
-				$output .= "</td></tr>\n";
+				$output .= "<tr><td style='width:50%;color:#000;background-color:#ddd;padding:5px'>&#36;_GET[".$key."]&nbsp;&nbsp; </td><td style='width:50%;padding:5px;color:#cd6e00;font-weight:normal;background-color:#ddd;'>"
+					. (is_array($val) ? "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>" : htmlspecialchars(stripslashes($val)))
+					. "</td></tr>\n";
 			}
 
 			$output .= "</table>\n";
 		}
-		$output .= "</fieldset>";
 
-		return $output;
+		return $output.'</fieldset>';
 	}
 
 	// --------------------------------------------------------------------
@@ -310,11 +289,11 @@
 	 */
 	protected function _compile_post()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_post" style="border:1px solid #009900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#009900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_post_data').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
+		$output = "\n\n"
+			. '<fieldset id="ci_profiler_post" style="border:1px solid #009900;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#009900;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_post_data').'&nbsp;&nbsp;</legend>'
+			. "\n";
 
 		if (count($_POST) == 0)
 		{
@@ -345,9 +324,8 @@
 
 			$output .= "</table>\n";
 		}
-		$output .= "</fieldset>";
 
-		return $output;
+		return $output.'</fieldset>';
 	}
 
 	// --------------------------------------------------------------------
@@ -359,24 +337,13 @@
 	 */
 	protected function _compile_uri_string()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_uri_string" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_uri_string').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
-
-		if ($this->CI->uri->uri_string == '')
-		{
-			$output .= "<div style='color:#000;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_uri')."</div>";
-		}
-		else
-		{
-			$output .= "<div style='color:#000;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->uri->uri_string."</div>";
-		}
-
-		$output .= "</fieldset>";
-
-		return $output;
+		return "\n\n"
+			. '<fieldset id="ci_profiler_uri_string" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_uri_string').'&nbsp;&nbsp;</legend>'
+			. "\n<div style='color:#000;font-weight:normal;padding:4px 0 4px 0'>"
+			. ($this->CI->uri->uri_string == '' ? $this->CI->lang->line('profiler_no_uri') : $this->CI->uri->uri_string)
+			. '</div></fieldset>';
 	}
 
 	// --------------------------------------------------------------------
@@ -388,17 +355,12 @@
 	 */
 	protected function _compile_controller_info()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_controller_info" style="border:1px solid #995300;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#995300;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_controller_info').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
-
-		$output .= "<div style='color:#995300;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->router->fetch_class()."/".$this->CI->router->fetch_method()."</div>";
-
-		$output .= "</fieldset>";
-
-		return $output;
+		return "\n\n"
+			. '<fieldset id="ci_profiler_controller_info" style="border:1px solid #995300;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#995300;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_controller_info').'&nbsp;&nbsp;</legend>'
+			. "\n<div style='color:#995300;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->router->fetch_class().'/'.$this->CI->router->fetch_method()
+			. '</div></fieldset>';
 	}
 
 	// --------------------------------------------------------------------
@@ -412,24 +374,13 @@
 	 */
 	protected function _compile_memory_usage()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_memory_usage" style="border:1px solid #5a0099;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#5a0099;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_memory_usage').'&nbsp;&nbsp;</legend>';
-		$output .= "\n";
-
-		if (function_exists('memory_get_usage') && ($usage = memory_get_usage()) != '')
-		{
-			$output .= "<div style='color:#5a0099;font-weight:normal;padding:4px 0 4px 0'>".number_format($usage).' bytes</div>';
-		}
-		else
-		{
-			$output .= "<div style='color:#5a0099;font-weight:normal;padding:4px 0 4px 0'>".$this->CI->lang->line('profiler_no_memory')."</div>";
-		}
-
-		$output .= "</fieldset>";
-
-		return $output;
+		return "\n\n"
+			. '<fieldset id="ci_profiler_memory_usage" style="border:1px solid #5a0099;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#5a0099;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_memory_usage').'&nbsp;&nbsp;</legend>'
+			. "\n<div style='color:#5a0099;font-weight:normal;padding:4px 0 4px 0'>"
+			. ((function_exists('memory_get_usage') && ($usage = memory_get_usage()) != '') ? number_format($usage).' bytes' : $this->CI->lang->line('profiler_no_memory'))
+			. '</div></fieldset>';
 	}
 
 	// --------------------------------------------------------------------
@@ -443,13 +394,11 @@
 	 */
 	protected function _compile_http_headers()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_http_headers" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_headers').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_httpheaders_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>';
-		$output .= "\n";
-
-		$output .= "\n\n<table style='width:100%;display:none' id='ci_profiler_httpheaders_table'>\n";
+		$output = "\n\n"
+			. '<fieldset id="ci_profiler_http_headers" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_headers').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_httpheaders_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
+			. "\n\n\n<table style='width:100%;display:none' id='ci_profiler_httpheaders_table'>\n";
 
 		foreach (array('HTTP_ACCEPT', 'HTTP_USER_AGENT', 'HTTP_CONNECTION', 'SERVER_PORT', 'SERVER_NAME', 'REMOTE_ADDR', 'SERVER_SOFTWARE', 'HTTP_ACCEPT_LANGUAGE', 'SCRIPT_NAME', 'REQUEST_METHOD',' HTTP_HOST', 'REMOTE_HOST', 'CONTENT_TYPE', 'SERVER_PROTOCOL', 'QUERY_STRING', 'HTTP_ACCEPT_ENCODING', 'HTTP_X_FORWARDED_FOR') as $header)
 		{
@@ -457,10 +406,7 @@
 			$output .= "<tr><td style='vertical-align: top;width:50%;padding:5px;color:#900;background-color:#ddd;'>".$header."&nbsp;&nbsp;</td><td style='width:50%;padding:5px;color:#000;background-color:#ddd;'>".$val."</td></tr>\n";
 		}
 
-		$output .= "</table>\n";
-		$output .= "</fieldset>";
-
-		return $output;
+		return $output."</table>\n</fieldset>";
 	}
 
 	// --------------------------------------------------------------------
@@ -474,13 +420,11 @@
 	 */
 	protected function _compile_config()
 	{
-		$output  = "\n\n";
-		$output .= '<fieldset id="ci_profiler_config" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= "\n";
-		$output .= '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_config').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_config_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>';
-		$output .= "\n";
-
-		$output .= "\n\n<table style='width:100%; display:none' id='ci_profiler_config_table'>\n";
+		$output = "\n\n"
+			. '<fieldset id="ci_profiler_config" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. "\n"
+			. '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_config').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_config_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
+			. "\n\n\n<table style='width:100%; display:none' id='ci_profiler_config_table'>\n";
 
 		foreach ($this->CI->config->config as $config=>$val)
 		{
@@ -492,10 +436,7 @@
 			$output .= "<tr><td style='padding:5px; vertical-align: top;color:#900;background-color:#ddd;'>".$config."&nbsp;&nbsp;</td><td style='padding:5px; color:#000;background-color:#ddd;'>".htmlspecialchars($val)."</td></tr>\n";
 		}
 
-		$output .= "</table>\n";
-		$output .= "</fieldset>";
-
-		return $output;
+		return $output."</table>\n</fieldset>";
 	}
 
 	// --------------------------------------------------------------------
@@ -512,9 +453,9 @@
 			return;
 		}
 
-		$output = '<fieldset id="ci_profiler_csession" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">';
-		$output .= '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_session_data').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_session_data\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>';
-		$output .= "<table style='width:100%;display:none' id='ci_profiler_session_data'>";
+		$output = '<fieldset id="ci_profiler_csession" style="border:1px solid #000;padding:6px 10px 10px 10px;margin:20px 0 20px 0;background-color:#eee">'
+			. '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_session_data').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_session_data\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
+			. "<table style='width:100%;display:none' id='ci_profiler_session_data'>";
 
 		foreach ($this->CI->session->all_userdata() as $key => $val)
 		{
@@ -526,9 +467,7 @@
 			$output .= "<tr><td style='padding:5px; vertical-align: top;color:#900;background-color:#ddd;'>".$key."&nbsp;&nbsp;</td><td style='padding:5px; color:#000;background-color:#ddd;'>".htmlspecialchars($val)."</td></tr>\n";
 		}
 
-		$output .= '</table>';
-		$output .= "</fieldset>";
-		return $output;
+		return $output."</table>\n</fieldset>";
 	}
 
 	// --------------------------------------------------------------------
@@ -553,14 +492,12 @@
 			}
 		}
 
-		if ($fields_displayed == 0)
+		if ($fields_displayed === 0)
 		{
 			$output .= '<p style="border:1px solid #5a0099;padding:10px;margin:20px 0;background-color:#eee">'.$this->CI->lang->line('profiler_no_profiles').'</p>';
 		}
 
-		$output .= '</div>';
-
-		return $output;
+		return $output.'</div>';
 	}
 }
 
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 08d2ba4..04103a4 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -38,26 +38,26 @@
  */
 class CI_Session {
 
-	var $sess_encrypt_cookie		= FALSE;
-	var $sess_use_database			= FALSE;
-	var $sess_table_name			= '';
-	var $sess_expiration			= 7200;
-	var $sess_expire_on_close		= FALSE;
-	var $sess_match_ip				= FALSE;
-	var $sess_match_useragent		= TRUE;
-	var $sess_cookie_name			= 'ci_session';
-	var $cookie_prefix				= '';
-	var $cookie_path				= '';
-	var $cookie_domain				= '';
-	var $cookie_secure				= FALSE;
-	var $sess_time_to_update		= 300;
-	var $encryption_key				= '';
-	var $flashdata_key				= 'flash';
-	var $time_reference				= 'time';
-	var $gc_probability				= 5;
-	var $userdata					= array();
-	var $CI;
-	var $now;
+	public $sess_encrypt_cookie		= FALSE;
+	public $sess_use_database		= FALSE;
+	public $sess_table_name			= '';
+	public $sess_expiration			= 7200;
+	public $sess_expire_on_close		= FALSE;
+	public $sess_match_ip			= FALSE;
+	public $sess_match_useragent		= TRUE;
+	public $sess_cookie_name		= 'ci_session';
+	public $cookie_prefix			= '';
+	public $cookie_path			= '';
+	public $cookie_domain			= '';
+	public $cookie_secure			= FALSE;
+	public $sess_time_to_update		= 300;
+	public $encryption_key			= '';
+	public $flashdata_key			= 'flash';
+	public $time_reference			= 'time';
+	public $gc_probability			= 5;
+	public $userdata			= array();
+	public $CI;
+	public $now;
 
 	/**
 	 * Session Constructor
@@ -109,7 +109,7 @@
 		{
 			$this->sess_expiration = (60*60*24*365*2);
 		}
-		
+
 		// Set the cookie name
 		$this->sess_cookie_name = $this->cookie_prefix.$this->sess_cookie_name;
 
@@ -141,10 +141,9 @@
 	/**
 	 * Fetch the current session data if it exists
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
-	function sess_read()
+	public function sess_read()
 	{
 		// Fetch the cookie
 		$session = $this->CI->input->cookie($this->sess_cookie_name);
@@ -194,14 +193,14 @@
 		}
 
 		// Does the IP Match?
-		if ($this->sess_match_ip == TRUE AND $session['ip_address'] != $this->CI->input->ip_address())
+		if ($this->sess_match_ip == TRUE AND $session['ip_address'] !== $this->CI->input->ip_address())
 		{
 			$this->sess_destroy();
 			return FALSE;
 		}
 
 		// Does the User Agent Match?
-		if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) != trim(substr($this->CI->input->user_agent(), 0, 120)))
+		if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) !== trim(substr($this->CI->input->user_agent(), 0, 120)))
 		{
 			$this->sess_destroy();
 			return FALSE;
@@ -225,7 +224,7 @@
 			$query = $this->CI->db->get($this->sess_table_name);
 
 			// No result?  Kill it!
-			if ($query->num_rows() == 0)
+			if ($query->num_rows() === 0)
 			{
 				$this->sess_destroy();
 				return FALSE;
@@ -259,10 +258,9 @@
 	/**
 	 * Write the session data
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function sess_write()
+	public function sess_write()
 	{
 		// Are we saving custom data to the DB?  If not, all we do is update the cookie
 		if ($this->sess_use_database === FALSE)
@@ -311,16 +309,16 @@
 	/**
 	 * Create a new session
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function sess_create()
+	public function sess_create()
 	{
 		$sessid = '';
-		while (strlen($sessid) < 32)
+		do
 		{
 			$sessid .= mt_rand(0, mt_getrandmax());
 		}
+		while (strlen($sessid) < 32);
 
 		// To make the session ID even more secure we'll combine it with the user's IP
 		$sessid .= $this->CI->input->ip_address();
@@ -349,10 +347,9 @@
 	/**
 	 * Update an existing session
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function sess_update()
+	public function sess_update()
 	{
 		// We only update the session every five minutes by default
 		if (($this->userdata['last_activity'] + $this->sess_time_to_update) >= $this->now)
@@ -364,19 +361,17 @@
 		// update in the database if we need it
 		$old_sessid = $this->userdata['session_id'];
 		$new_sessid = '';
-		while (strlen($new_sessid) < 32)
+		do
 		{
 			$new_sessid .= mt_rand(0, mt_getrandmax());
 		}
+		while (strlen($new_sessid) < 32);
 
 		// To make the session ID even more secure we'll combine it with the user's IP
 		$new_sessid .= $this->CI->input->ip_address();
 
-		// Turn it into a hash
-		$new_sessid = md5(uniqid($new_sessid, TRUE));
-
-		// Update the session data in the session data array
-		$this->userdata['session_id'] = $new_sessid;
+		// Turn it into a hash and update the session data array
+		$this->userdata['session_id'] = $new_sessid = md5(uniqid($new_sessid, TRUE));
 		$this->userdata['last_activity'] = $this->now;
 
 		// _set_cookie() will handle this for us if we aren't using database sessions
@@ -405,10 +400,9 @@
 	/**
 	 * Destroy the current session
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function sess_destroy()
+	public function sess_destroy()
 	{
 		// Kill the session DB row
 		if ($this->sess_use_database === TRUE AND isset($this->userdata['session_id']))
@@ -433,11 +427,10 @@
 	/**
 	 * Fetch a specific item from the session array
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function userdata($item)
+	public function userdata($item)
 	{
 		return ( ! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];
 	}
@@ -447,10 +440,9 @@
 	/**
 	 * Fetch all session data
 	 *
-	 * @access	public
 	 * @return	array
 	 */
-	function all_userdata()
+	public function all_userdata()
 	{
 		return $this->userdata;
 	}
@@ -460,12 +452,11 @@
 	/**
 	 * Add or change data in the "userdata" array
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @param	string
 	 * @return	void
 	 */
-	function set_userdata($newdata = array(), $newval = '')
+	public function set_userdata($newdata = array(), $newval = '')
 	{
 		if (is_string($newdata))
 		{
@@ -488,10 +479,9 @@
 	/**
 	 * Delete a session variable from the "userdata" array
 	 *
-	 * @access	array
 	 * @return	void
 	 */
-	function unset_userdata($newdata = array())
+	public function unset_userdata($newdata = array())
 	{
 		if (is_string($newdata))
 		{
@@ -515,12 +505,11 @@
 	 * Add or change flashdata, only available
 	 * until the next request
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @param	string
 	 * @return	void
 	 */
-	function set_flashdata($newdata = array(), $newval = '')
+	public function set_flashdata($newdata = array(), $newval = '')
 	{
 		if (is_string($newdata))
 		{
@@ -531,8 +520,7 @@
 		{
 			foreach ($newdata as $key => $val)
 			{
-				$flashdata_key = $this->flashdata_key.':new:'.$key;
-				$this->set_userdata($flashdata_key, $val);
+				$this->set_userdata($this->flashdata_key.':new:'.$key, $val);
 			}
 		}
 	}
@@ -542,21 +530,18 @@
 	/**
 	 * Keeps existing flashdata available to next request.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
-	function keep_flashdata($key)
+	public function keep_flashdata($key)
 	{
 		// 'old' flashdata gets removed.  Here we mark all
 		// flashdata as 'new' to preserve it from _flashdata_sweep()
 		// Note the function will return FALSE if the $key
 		// provided cannot be found
-		$old_flashdata_key = $this->flashdata_key.':old:'.$key;
-		$value = $this->userdata($old_flashdata_key);
+		$value = $this->userdata($this->flashdata_key.':old:'.$key);
 
-		$new_flashdata_key = $this->flashdata_key.':new:'.$key;
-		$this->set_userdata($new_flashdata_key, $value);
+		$this->set_userdata($this->flashdata_key.':new:'.$key, $value);
 	}
 
 	// ------------------------------------------------------------------------
@@ -564,14 +549,12 @@
 	/**
 	 * Fetch a specific flashdata item from the session array
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function flashdata($key)
+	public function flashdata($key)
 	{
-		$flashdata_key = $this->flashdata_key.':old:'.$key;
-		return $this->userdata($flashdata_key);
+		return $this->userdata($this->flashdata_key.':old:'.$key);
 	}
 
 	// ------------------------------------------------------------------------
@@ -580,10 +563,9 @@
 	 * Identifies flashdata as 'old' for removal
 	 * when _flashdata_sweep() runs.
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	function _flashdata_mark()
+	protected function _flashdata_mark()
 	{
 		$userdata = $this->all_userdata();
 		foreach ($userdata as $name => $value)
@@ -591,8 +573,7 @@
 			$parts = explode(':new:', $name);
 			if (is_array($parts) && count($parts) === 2)
 			{
-				$new_name = $this->flashdata_key.':old:'.$parts[1];
-				$this->set_userdata($new_name, $value);
+				$this->set_userdata($this->flashdata_key.':old:'.$parts[1], $value);
 				$this->unset_userdata($name);
 			}
 		}
@@ -603,11 +584,10 @@
 	/**
 	 * Removes all flashdata marked as 'old'
 	 *
-	 * @access	private
 	 * @return	void
 	 */
 
-	function _flashdata_sweep()
+	protected function _flashdata_sweep()
 	{
 		$userdata = $this->all_userdata();
 		foreach ($userdata as $key => $value)
@@ -625,22 +605,17 @@
 	/**
 	 * Get the "now" time
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _get_time()
+	protected function _get_time()
 	{
-		if (strtolower($this->time_reference) == 'gmt')
+		if (strtolower($this->time_reference) === 'gmt')
 		{
 			$now = time();
-			$time = mktime(gmdate("H", $now), gmdate("i", $now), gmdate("s", $now), gmdate("m", $now), gmdate("d", $now), gmdate("Y", $now));
-		}
-		else
-		{
-			$time = time();
+			return mktime(gmdate('H', $now), gmdate('i', $now), gmdate('s', $now), gmdate('m', $now), gmdate('d', $now), gmdate('Y', $now));
 		}
 
-		return $time;
+		return time();
 	}
 
 	// --------------------------------------------------------------------
@@ -648,10 +623,9 @@
 	/**
 	 * Write the session cookie
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function _set_cookie($cookie_data = NULL)
+	protected function _set_cookie($cookie_data = NULL)
 	{
 		if (is_null($cookie_data))
 		{
@@ -692,32 +666,27 @@
 	 * This function first converts any slashes found in the array to a temporary
 	 * marker, so when it gets unserialized the slashes will be preserved
 	 *
-	 * @access	private
 	 * @param	array
 	 * @return	string
 	 */
-	function _serialize($data)
+	protected function _serialize($data)
 	{
 		if (is_array($data))
 		{
 			array_walk_recursive($data, array(&$this, '_escape_slashes'));
 		}
-		else
+		elseif (is_string($data))
 		{
-			if (is_string($data))
-			{
-				$data = str_replace('\\', '{{slash}}', $data);
-			}
+			$data = str_replace('\\', '{{slash}}', $data);
 		}
 		return serialize($data);
 	}
-	
+
 	/**
 	 * Escape slashes
 	 *
 	 * This function converts any slashes found into a temporary marker
 	 *
-	 * @access	private
 	 */
 	function _escape_slashes(&$val, $key)
 	{
@@ -735,11 +704,10 @@
 	 * This function unserializes a data string, then converts any
 	 * temporary slash markers back to actual slashes
 	 *
-	 * @access	private
 	 * @param	array
 	 * @return	string
 	 */
-	function _unserialize($data)
+	protected function _unserialize($data)
 	{
 		$data = @unserialize(strip_slashes($data));
 
@@ -751,15 +719,14 @@
 
 		return (is_string($data)) ? str_replace('{{slash}}', '\\', $data) : $data;
 	}
-	
+
 	/**
 	 * Unescape slashes
 	 *
 	 * This function converts any slash markers back into actual slashes
 	 *
-	 * @access	private
 	 */
-	function _unescape_slashes(&$val, $key)
+	protected function _unescape_slashes(&$val, $key)
 	{
 		if (is_string($val))
 		{
@@ -775,10 +742,9 @@
 	 * This deletes expired session rows from database
 	 * if the probability percentage is met
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function _sess_gc()
+	protected function _sess_gc()
 	{
 		if ($this->sess_use_database != TRUE)
 		{
@@ -802,4 +768,4 @@
 // END Session Class
 
 /* End of file Session.php */
-/* Location: ./system/libraries/Session.php */
\ No newline at end of file
+/* Location: ./system/libraries/Session.php */
diff --git a/system/libraries/Sha1.php b/system/libraries/Sha1.php
deleted file mode 100644
index 477b92b..0000000
--- a/system/libraries/Sha1.php
+++ /dev/null
@@ -1,263 +0,0 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP 5.1.6 or newer
- *
- * NOTICE OF LICENSE
- * 
- * Licensed under the Open Software License version 3.0
- * 
- * This source file is subject to the Open Software License (OSL 3.0) that is
- * bundled with this package in the files license.txt / license.rst.  It is
- * also available through the world wide web at this URL:
- * http://opensource.org/licenses/OSL-3.0
- * If you did not receive a copy of the license and are unable to obtain it
- * through the world wide web, please send an email to
- * licensing@ellislab.com so we can send you a copy immediately.
- *
- * @package		CodeIgniter
- * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
- * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
- * @link		http://codeigniter.com
- * @since		Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/**
- * SHA1 Encoding Class
- *
- * Purpose: Provides 160 bit hashing using The Secure Hash Algorithm
- * developed at the National Institute of Standards and Technology. The 40
- * character SHA1 message hash is computationally infeasible to crack.
- *
- * This class is a fallback for servers that are not running PHP greater than
- * 4.3, or do not have the MHASH library.
- *
- * This class is based on two scripts:
- *
- * Marcus Campbell's PHP implementation (GNU license)
- * http://www.tecknik.net/sha-1/
- *
- * ...which is based on Paul Johnston's JavaScript version
- * (BSD license). http://pajhome.org.uk/
- *
- * I encapsulated the functions and wrote one additional method to fix
- * a hex conversion bug. - Rick Ellis
- *
- * @package		CodeIgniter
- * @subpackage	Libraries
- * @category	Encryption
- * @author		EllisLab Dev Team
- * @link		http://codeigniter.com/user_guide/libraries/encryption.html
- */
-class CI_SHA1 {
-
-	public function __construct()
-	{
-		log_message('debug', "SHA1 Class Initialized");
-	}
-
-	/**
-	 * Generate the Hash
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */
-	function generate($str)
-	{
-		$n = ((strlen($str) + 8) >> 6) + 1;
-
-		for ($i = 0; $i < $n * 16; $i++)
-		{
-			$x[$i] = 0;
-		}
-
-		for ($i = 0; $i < strlen($str); $i++)
-		{
-			$x[$i >> 2] |= ord(substr($str, $i, 1)) << (24 - ($i % 4) * 8);
-		}
-
-		$x[$i >> 2] |= 0x80 << (24 - ($i % 4) * 8);
-
-		$x[$n * 16 - 1] = strlen($str) * 8;
-
-		$a =  1732584193;
-		$b = -271733879;
-		$c = -1732584194;
-		$d =  271733878;
-		$e = -1009589776;
-
-		for ($i = 0; $i < count($x); $i += 16)
-		{
-			$olda = $a;
-			$oldb = $b;
-			$oldc = $c;
-			$oldd = $d;
-			$olde = $e;
-
-			for ($j = 0; $j < 80; $j++)
-			{
-				if ($j < 16)
-				{
-					$w[$j] = $x[$i + $j];
-				}
-				else
-				{
-					$w[$j] = $this->_rol($w[$j - 3] ^ $w[$j - 8] ^ $w[$j - 14] ^ $w[$j - 16], 1);
-				}
-
-				$t = $this->_safe_add($this->_safe_add($this->_rol($a, 5), $this->_ft($j, $b, $c, $d)), $this->_safe_add($this->_safe_add($e, $w[$j]), $this->_kt($j)));
-
-				$e = $d;
-				$d = $c;
-				$c = $this->_rol($b, 30);
-				$b = $a;
-				$a = $t;
-			}
-
-			$a = $this->_safe_add($a, $olda);
-			$b = $this->_safe_add($b, $oldb);
-			$c = $this->_safe_add($c, $oldc);
-			$d = $this->_safe_add($d, $oldd);
-			$e = $this->_safe_add($e, $olde);
-		}
-
-		return $this->_hex($a).$this->_hex($b).$this->_hex($c).$this->_hex($d).$this->_hex($e);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Convert a decimal to hex
-	 *
-	 * @access	private
-	 * @param	string
-	 * @return	string
-	 */
-	function _hex($str)
-	{
-		$str = dechex($str);
-
-		if (strlen($str) == 7)
-		{
-			$str = '0'.$str;
-		}
-
-		return $str;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 *  Return result based on iteration
-	 *
-	 * @access	private
-	 * @return	string
-	 */
-	function _ft($t, $b, $c, $d)
-	{
-		if ($t < 20)
-			return ($b & $c) | ((~$b) & $d);
-		if ($t < 40)
-			return $b ^ $c ^ $d;
-		if ($t < 60)
-			return ($b & $c) | ($b & $d) | ($c & $d);
-
-		return $b ^ $c ^ $d;
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Determine the additive constant
-	 *
-	 * @access	private
-	 * @return	string
-	 */
-	function _kt($t)
-	{
-		if ($t < 20)
-		{
-			return 1518500249;
-		}
-		else if ($t < 40)
-		{
-			return 1859775393;
-		}
-		else if ($t < 60)
-		{
-			return -1894007588;
-		}
-		else
-		{
-			return -899497514;
-		}
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Add integers, wrapping at 2^32
-	 *
-	 * @access	private
-	 * @return	string
-	 */
-	function _safe_add($x, $y)
-	{
-		$lsw = ($x & 0xFFFF) + ($y & 0xFFFF);
-		$msw = ($x >> 16) + ($y >> 16) + ($lsw >> 16);
-
-		return ($msw << 16) | ($lsw & 0xFFFF);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Bitwise rotate a 32-bit number
-	 *
-	 * @access	private
-	 * @return	integer
-	 */
-	function _rol($num, $cnt)
-	{
-		return ($num << $cnt) | $this->_zero_fill($num, 32 - $cnt);
-	}
-
-	// --------------------------------------------------------------------
-
-	/**
-	 * Pad string with zero
-	 *
-	 * @access	private
-	 * @return	string
-	 */
-	function _zero_fill($a, $b)
-	{
-		$bin = decbin($a);
-
-		if (strlen($bin) < $b)
-		{
-			$bin = 0;
-		}
-		else
-		{
-			$bin = substr($bin, 0, strlen($bin) - $b);
-		}
-
-		for ($i=0; $i < $b; $i++)
-		{
-			$bin = "0".$bin;
-		}
-
-		return bindec($bin);
-	}
-}
-// END CI_SHA
-
-/* End of file Sha1.php */
-/* Location: ./system/libraries/Sha1.php */
diff --git a/system/libraries/Table.php b/system/libraries/Table.php
index 8d0e11a..fb154e5 100644
--- a/system/libraries/Table.php
+++ b/system/libraries/Table.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.3.1
@@ -40,14 +40,14 @@
  */
 class CI_Table {
 
-	var $rows				= array();
-	var $heading			= array();
-	var $auto_heading		= TRUE;
-	var $caption			= NULL;
-	var $template			= NULL;
-	var $newline			= "\n";
-	var $empty_cells		= "";
-	var	$function			= FALSE;
+	public $rows			= array();
+	public $heading			= array();
+	public $auto_heading		= TRUE;
+	public $caption			= NULL;
+	public $template		= NULL;
+	public $newline			= "\n";
+	public $empty_cells		= '';
+	public $function		= FALSE;
 
 	public function __construct()
 	{
@@ -59,11 +59,10 @@
 	/**
 	 * Set the template
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	void
 	 */
-	function set_template($template)
+	public function set_template($template)
 	{
 		if ( ! is_array($template))
 		{
@@ -80,11 +79,10 @@
 	 *
 	 * Can be passed as an array or discreet params
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @return	void
 	 */
-	function set_heading()
+	public function set_heading()
 	{
 		$args = func_get_args();
 		$this->heading = $this->_prep_args($args);
@@ -98,14 +96,13 @@
 	 * columns.  This allows a single array with many elements to  be
 	 * displayed in a table that has a fixed column count.
 	 *
-	 * @access	public
 	 * @param	array
 	 * @param	int
 	 * @return	void
 	 */
-	function make_columns($array = array(), $col_limit = 0)
+	public function make_columns($array = array(), $col_limit = 0)
 	{
-		if ( ! is_array($array) OR count($array) == 0)
+		if ( ! is_array($array) OR count($array) === 0)
 		{
 			return FALSE;
 		}
@@ -120,7 +117,7 @@
 		}
 
 		$new = array();
-		while (count($array) > 0)
+		do
 		{
 			$temp = array_splice($array, 0, $col_limit);
 
@@ -134,6 +131,7 @@
 
 			$new[] = $temp;
 		}
+		while (count($array) > 0);
 
 		return $new;
 	}
@@ -145,11 +143,10 @@
 	 *
 	 * Can be passed as an array or discreet params
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @return	void
 	 */
-	function set_empty($value)
+	public function set_empty($value)
 	{
 		$this->empty_cells = $value;
 	}
@@ -161,11 +158,10 @@
 	 *
 	 * Can be passed as an array or discreet params
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @return	void
 	 */
-	function add_row()
+	public function add_row()
 	{
 		$args = func_get_args();
 		$this->rows[] = $this->_prep_args($args);
@@ -178,16 +174,15 @@
 	 *
 	 * Ensures a standard associative array format for all cell data
 	 *
-	 * @access	public
 	 * @param	type
 	 * @return	type
 	 */
-	function _prep_args($args)
+	protected function _prep_args($args)
 	{
 		// If there is no $args[0], skip this and treat as an associative array
 		// This can happen if there is only a single key, for example this is passed to table->generate
 		// array(array('foo'=>'bar'))
-		if (isset($args[0]) AND (count($args) == 1 && is_array($args[0])))
+		if (isset($args[0]) AND (count($args) === 1 && is_array($args[0])))
 		{
 			// args sent as indexed array
 			if ( ! isset($args[0]['data']))
@@ -224,11 +219,10 @@
 	/**
 	 * Add a table caption
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
-	function set_caption($caption)
+	public function set_caption($caption)
 	{
 		$this->caption = $caption;
 	}
@@ -238,11 +232,10 @@
 	/**
 	 * Generate the table
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @return	string
 	 */
-	function generate($table_data = NULL)
+	public function generate($table_data = NULL)
 	{
 		// The table data can optionally be passed to this function
 		// either as a database result object or an array
@@ -254,13 +247,13 @@
 			}
 			elseif (is_array($table_data))
 			{
-				$set_heading = (count($this->heading) == 0 AND $this->auto_heading == FALSE) ? FALSE : TRUE;
+				$set_heading = (count($this->heading) === 0 AND $this->auto_heading == FALSE) ? FALSE : TRUE;
 				$this->_set_from_array($table_data, $set_heading);
 			}
 		}
 
 		// Is there anything to display?  No?  Smite them!
-		if (count($this->heading) == 0 AND count($this->rows) == 0)
+		if (count($this->heading) === 0 AND count($this->rows) === 0)
 		{
 			return 'Undefined table data';
 		}
@@ -273,24 +266,18 @@
 
 		// Build the table!
 
-		$out = $this->template['table_open'];
-		$out .= $this->newline;
+		$out = $this->template['table_open'].$this->newline;
 
 		// Add any caption here
 		if ($this->caption)
 		{
-			$out .= $this->newline;
-			$out .= '<caption>' . $this->caption . '</caption>';
-			$out .= $this->newline;
+			$out .= $this->newline.'<caption>'.$this->caption.'</caption>'.$this->newline;
 		}
 
 		// Is there a table heading to display?
 		if (count($this->heading) > 0)
 		{
-			$out .= $this->template['thead_open'];
-			$out .= $this->newline;
-			$out .= $this->template['heading_row_start'];
-			$out .= $this->newline;
+			$out .= $this->template['thead_open'].$this->newline.$this->template['heading_row_start'].$this->newline;
 
 			foreach ($this->heading as $heading)
 			{
@@ -304,22 +291,16 @@
 					}
 				}
 
-				$out .= $temp;
-				$out .= isset($heading['data']) ? $heading['data'] : '';
-				$out .= $this->template['heading_cell_end'];
+				$out .= $temp.(isset($heading['data']) ? $heading['data'] : '').$this->template['heading_cell_end'];
 			}
 
-			$out .= $this->template['heading_row_end'];
-			$out .= $this->newline;
-			$out .= $this->template['thead_close'];
-			$out .= $this->newline;
+			$out .= $this->template['heading_row_end'].$this->newline.$this->template['thead_close'].$this->newline;
 		}
 
 		// Build the table rows
 		if (count($this->rows) > 0)
 		{
-			$out .= $this->template['tbody_open'];
-			$out .= $this->newline;
+			$out .= $this->template['tbody_open'].$this->newline;
 
 			$i = 1;
 			foreach ($this->rows as $row)
@@ -332,8 +313,7 @@
 				// We use modulus to alternate the row colors
 				$name = (fmod($i++, 2)) ? '' : 'alt_';
 
-				$out .= $this->template['row_'.$name.'start'];
-				$out .= $this->newline;
+				$out .= $this->template['row_'.$name.'start'].$this->newline;
 
 				foreach ($row as $cell)
 				{
@@ -341,7 +321,7 @@
 
 					foreach ($cell as $key => $val)
 					{
-						if ($key != 'data')
+						if ($key !== 'data')
 						{
 							$temp = str_replace('<td', "<td $key='$val'", $temp);
 						}
@@ -369,12 +349,10 @@
 					$out .= $this->template['cell_'.$name.'end'];
 				}
 
-				$out .= $this->template['row_'.$name.'end'];
-				$out .= $this->newline;
+				$out .= $this->template['row_'.$name.'end'].$this->newline;
 			}
 
-			$out .= $this->template['tbody_close'];
-			$out .= $this->newline;
+			$out .= $this->template['tbody_close'].$this->newline;
 		}
 
 		$out .= $this->template['table_close'];
@@ -390,10 +368,9 @@
 	/**
 	 * Clears the table arrays.  Useful if multiple tables are being generated
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function clear()
+	public function clear()
 	{
 		$this->rows				= array();
 		$this->heading			= array();
@@ -405,11 +382,10 @@
 	/**
 	 * Set table data from a database result object
 	 *
-	 * @access	public
 	 * @param	object
 	 * @return	void
 	 */
-	function _set_from_object($query)
+	protected function _set_from_object($query)
 	{
 		if ( ! is_object($query))
 		{
@@ -417,7 +393,7 @@
 		}
 
 		// First generate the headings from the table column names
-		if (count($this->heading) == 0)
+		if (count($this->heading) === 0)
 		{
 			if ( ! method_exists($query, 'list_fields'))
 			{
@@ -443,13 +419,12 @@
 	/**
 	 * Set table data from an array
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	void
 	 */
-	function _set_from_array($data, $set_heading = TRUE)
+	protected function _set_from_array($data, $set_heading = TRUE)
 	{
-		if ( ! is_array($data) OR count($data) == 0)
+		if ( ! is_array($data) OR count($data) === 0)
 		{
 			return FALSE;
 		}
@@ -458,7 +433,7 @@
 		foreach ($data as $row)
 		{
 			// If a heading hasn't already been set we'll use the first row of the array as the heading
-			if ($i == 0 AND count($data) > 1 AND count($this->heading) == 0 AND $set_heading == TRUE)
+			if ($i++ === 0 AND count($data) > 1 AND count($this->heading) === 0 AND $set_heading == TRUE)
 			{
 				$this->heading = $this->_prep_args($row);
 			}
@@ -466,8 +441,6 @@
 			{
 				$this->rows[] = $this->_prep_args($row);
 			}
-
-			$i++;
 		}
 	}
 
@@ -476,10 +449,9 @@
 	/**
 	 * Compile Template
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	function _compile_template()
+	protected function _compile_template()
 	{
 		if ($this->template == NULL)
 		{
@@ -502,10 +474,9 @@
 	/**
 	 * Default Template
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	function _default_template()
+	protected function _default_template()
 	{
 		return  array (
 						'table_open'			=> '<table border="0" cellpadding="4" cellspacing="0">',
@@ -538,6 +509,5 @@
 
 }
 
-
 /* End of file Table.php */
 /* Location: ./system/libraries/Table.php */
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
index 1e59283..79a0091 100644
--- a/system/libraries/Trackback.php
+++ b/system/libraries/Trackback.php
@@ -1,4 +1,4 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -47,11 +47,6 @@
 	public $response		= '';
 	public $error_msg		= array();
 
-	/**
-	 * Constructor
-	 *
-	 * @access	public
-	 */
 	public function __construct()
 	{
 		log_message('debug', "Trackback Class Initialized");
@@ -62,7 +57,6 @@
 	/**
 	 * Send Trackback
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	bool
 	 */
@@ -96,20 +90,9 @@
 			}
 
 			// Convert High ASCII Characters
-			if ($this->convert_ascii == TRUE)
+			if ($this->convert_ascii == TRUE && in_array($item, array('excerpt', 'title', 'blog_name')))
 			{
-				if ($item == 'excerpt')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
-				elseif ($item == 'title')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
-				elseif ($item == 'blog_name')
-				{
-					$$item = $this->convert_ascii($$item);
-				}
+				$$item = $this->convert_ascii($$item);
 			}
 		}
 
@@ -144,7 +127,6 @@
 	 * If the data is valid it is set to the $this->data array
 	 * so that it can be inserted into a database.
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function receive()
@@ -186,7 +168,6 @@
 	 * sends the "incomplete information" error, as that's
 	 * the most common one.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
@@ -204,7 +185,6 @@
 	 * This should be called when a trackback has been
 	 * successfully received and inserted.
 	 *
-	 * @access	public
 	 * @return	void
 	 */
 	public function send_success()
@@ -218,7 +198,6 @@
 	/**
 	 * Fetch a particular item
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -235,7 +214,6 @@
 	 * Opens a socket connection and passes the data to
 	 * the server.  Returns TRUE on success, FALSE on failure
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	bool
@@ -280,15 +258,9 @@
 		@fclose($fp);
 
 
-		if (stristr($this->response, '<error>0</error>') === FALSE)
+		if (stripos($this->response, '<error>0</error>') === FALSE)
 		{
-			$message = 'An unknown error was encountered';
-
-			if (preg_match("/<message>(.*?)<\/message>/is", $this->response, $match))
-			{
-				$message = trim($match['1']);
-			}
-
+			$message = (preg_match('/<message>(.*?)<\/message>/is', $this->response, $match)) ? trim($match[1]) : 'An unknown error was encountered';
 			$this->set_error($message);
 			return FALSE;
 		}
@@ -305,7 +277,6 @@
 	 * It takes a string of URLs (separated by comma or
 	 * space) and puts each URL into an array
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -318,7 +289,7 @@
 		$urls = str_replace(",,", ",", $urls);
 
 		// Remove any comma that might be at the end
-		if (substr($urls, -1) == ",")
+		if (substr($urls, -1) === ',')
 		{
 			$urls = substr($urls, 0, -1);
 		}
@@ -341,7 +312,6 @@
 	 *
 	 * Simply adds "http://" if missing
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -349,9 +319,9 @@
 	{
 		$url = trim($url);
 
-		if (substr($url, 0, 4) != "http")
+		if (strpos($url, 'http') !== 0)
 		{
-			$url = "http://".$url;
+			$url = 'http://'.$url;
 		}
 	}
 
@@ -360,7 +330,6 @@
 	/**
 	 * Find the Trackback URL's ID
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -409,7 +378,6 @@
 	/**
 	 * Convert Reserved XML characters to Entities
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -417,15 +385,13 @@
 	{
 		$temp = '__TEMP_AMPERSANDS__';
 
-		$str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);
-		$str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);
+		$str = preg_replace(array('/&#(\d+);/', '/&(\w+);/'), "$temp\\1;", $str);
 
 		$str = str_replace(array("&","<",">","\"", "'", "-"),
 							array("&amp;", "&lt;", "&gt;", "&quot;", "&#39;", "&#45;"),
 							$str);
 
-		$str = preg_replace("/$temp(\d+);/","&#\\1;",$str);
-		$str = preg_replace("/$temp(\w+);/","&\\1;", $str);
+		$str = preg_replace(array("/$temp(\d+);/", "/$temp(\w+);/"), array('&#\\1;', '&\\1;'), $str);
 
 		return $str;
 	}
@@ -437,7 +403,6 @@
 	 *
 	 * Limits the string based on the character count. Will preserve complete words.
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	integer
 	 * @param	string
@@ -457,13 +422,13 @@
 			return $str;
 		}
 
-		$out = "";
+		$out = '';
 		foreach (explode(' ', trim($str)) as $val)
 		{
 			$out .= $val.' ';
 			if (strlen($out) >= $n)
 			{
-				return trim($out).$end_char;
+				return rtrim($out).$end_char;
 			}
 		}
 	}
@@ -476,7 +441,6 @@
 	 * Converts Hight ascii text and MS Word special chars
 	 * to character entities
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
@@ -496,16 +460,16 @@
 			}
 			else
 			{
-				if (count($temp) == 0)
+				if (count($temp) === 0)
 				{
 					$count = ($ordinal < 224) ? 2 : 3;
 				}
 
 				$temp[] = $ordinal;
 
-				if (count($temp) == $count)
+				if (count($temp) === $count)
 				{
-					$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
+					$number = ($count == 3) ? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64) : (($temp[0] % 32) * 64) + ($temp[1] % 64);
 
 					$out .= '&#'.$number.';';
 					$count = 1;
@@ -522,7 +486,6 @@
 	/**
 	 * Set error message
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
@@ -537,7 +500,6 @@
 	/**
 	 * Show error messages
 	 *
-	 * @access	public
 	 * @param	string
 	 * @param	string
 	 * @return	string
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
index af6ca2b..76f0d4f 100644
--- a/system/libraries/Typography.php
+++ b/system/libraries/Typography.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -31,7 +31,7 @@
  * Typography Class
  *
  *
- * @access		private
+ * @access		protected
  * @category	Helpers
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/libraries/typography.html
@@ -39,22 +39,22 @@
 class CI_Typography {
 
 	// Block level elements that should not be wrapped inside <p> tags
-	var $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul';
+	public $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul';
 
 	// Elements that should not have <p> and <br /> tags within them.
-	var $skip_elements	= 'p|pre|ol|ul|dl|object|table|h\d';
+	public $skip_elements	= 'p|pre|ol|ul|dl|object|table|h\d';
 
 	// Tags we want the parser to completely ignore when splitting the string.
-	var $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var';
+	public $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var';
 
 	// array of block level elements that require inner content to be within another block level element
-	var $inner_block_required = array('blockquote');
+	public $inner_block_required = array('blockquote');
 
 	// the last block element parsed
-	var $last_block_element = '';
+	public $last_block_element = '';
 
 	// whether or not to protect quotes within { curly braces }
-	var $protect_braced_quotes = FALSE;
+	public $protect_braced_quotes = FALSE;
 
 	/**
 	 * Auto Typography
@@ -72,7 +72,7 @@
 	 * @param	bool	whether to reduce more then two consecutive newlines to two
 	 * @return	string
 	 */
-	function auto_typography($str, $reduce_linebreaks = FALSE)
+	public function auto_typography($str, $reduce_linebreaks = FALSE)
 	{
 		if ($str == '')
 		{
@@ -127,35 +127,32 @@
 		// adversely affected if they are split out so we'll convert the opening bracket < temporarily to: {@TAG}
 		$str = preg_replace("#<(/*)(".$this->inline_elements.")([ >])#i", "{@TAG}\\1\\2\\3", $str);
 
-		// Split the string at every tag.  This expression creates an array with this prototype:
-		//
-		//	[array]
-		//	{
-		//		[0] = <opening tag>
-		//		[1] = Content...
-		//		[2] = <closing tag>
-		//		Etc...
-		//	}
+		/* Split the string at every tag. This expression creates an array with this prototype:
+		 *
+		 *	[array]
+		 *	{
+		 *		[0] = <opening tag>
+		 *		[1] = Content...
+		 *		[2] = <closing tag>
+		 *		Etc...
+		 *	}
+		 */
 		$chunks = preg_split('/(<(?:[^<>]+(?:"[^"]*"|\'[^\']*\')?)+>)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
 
 		// Build our finalized string.  We cycle through the array, skipping tags, and processing the contained text
 		$str = '';
 		$process = TRUE;
 		$paragraph = FALSE;
-		$current_chunk = 0;
-		$total_chunks = count($chunks);
 
-		foreach ($chunks as $chunk)
+		for ($i = 1, $c = count($chunks); $i <= $c; $i++)
 		{
-			$current_chunk++;
-
 			// Are we dealing with a tag? If so, we'll skip the processing for this cycle.
 			// Well also set the "process" flag which allows us to skip <pre> tags and a few other things.
-			if (preg_match("#<(/*)(".$this->block_elements.").*?>#", $chunk, $match))
+			if (preg_match("#<(/*)(".$this->block_elements.").*?>#", $chunks[$i], $match))
 			{
 				if (preg_match("#".$this->skip_elements."#", $match[2]))
 				{
-					$process =  ($match[1] == '/') ? TRUE : FALSE;
+					$process = ($match[1] === '/');
 				}
 
 				if ($match[1] == '')
@@ -163,24 +160,24 @@
 					$this->last_block_element = $match[2];
 				}
 
-				$str .= $chunk;
+				$str .= $chunks[$i];
 				continue;
 			}
 
-			if ($process == FALSE)
+			if ($process === FALSE)
 			{
-				$str .= $chunk;
+				$str .= $chunks[$i];
 				continue;
 			}
 
 			//  Force a newline to make sure end tags get processed by _format_newlines()
-			if ($current_chunk == $total_chunks)
+			if ($i === $c)
 			{
-				$chunk .= "\n";
+				$chunks[$i] .= "\n";
 			}
 
 			//  Convert Newlines into <p> and <br /> tags
-			$str .= $this->_format_newlines($chunk);
+			$str .= $this->_format_newlines($chunks[$i]);
 		}
 
 		// No opening block level tag?  Add it if needed.
@@ -265,7 +262,7 @@
 	 * @param	string
 	 * @return	string
 	 */
-	function format_characters($str)
+	public function format_characters($str)
 	{
 		static $table;
 
@@ -325,18 +322,13 @@
 	 *
 	 * Converts newline characters into either <p> tags or <br />
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	function _format_newlines($str)
+	protected function _format_newlines($str)
 	{
-		if ($str == '')
-		{
-			return $str;
-		}
-
-		if (strpos($str, "\n") === FALSE  && ! in_array($this->last_block_element, $this->inner_block_required))
+		if ($str == '' OR (strpos($str, "\n") === FALSE AND ! in_array($this->last_block_element, $this->inner_block_required)))
 		{
 			return $str;
 		}
@@ -373,11 +365,11 @@
 	 * and we don't want double dashes converted to emdash entities, so they are marked with {@DD}
 	 * likewise double spaces are converted to {@NBS} to prevent entity conversion
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	array
 	 * @return	string
 	 */
-	function _protect_characters($match)
+	protected function _protect_characters($match)
 	{
 		return str_replace(array("'",'"','--','  '), array('{@SQ}', '{@DQ}', '{@DD}', '{@NBS}'), $match[0]);
 	}
@@ -391,25 +383,16 @@
 	 * @param	string
 	 * @return	string
 	 */
-	function nl2br_except_pre($str)
+	public function nl2br_except_pre($str)
 	{
-		$ex = explode("pre>",$str);
-		$ct = count($ex);
-
-		$newstr = "";
-		for ($i = 0; $i < $ct; $i++)
+		$newstr = '';
+		for ($ex = explode('pre>', $str), $ct = count($ex), $i = 0; $i < $ct; $i++)
 		{
-			if (($i % 2) == 0)
+			$newstr .= (($i % 2) === 0) ? nl2br($ex[$i]) : $ex[$i];
+			if ($ct - 1 !== $i)
 			{
-				$newstr .= nl2br($ex[$i]);
+				$newstr .= 'pre>';
 			}
-			else
-			{
-				$newstr .= $ex[$i];
-			}
-
-			if ($ct - 1 != $i)
-				$newstr .= "pre>";
 		}
 
 		return $newstr;
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
index 7afe40b..38d767c 100644
--- a/system/libraries/Unit_test.php
+++ b/system/libraries/Unit_test.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.3.1
@@ -40,12 +40,12 @@
  */
 class CI_Unit_test {
 
-	var $active					= TRUE;
-	var $results				= array();
-	var $strict					= FALSE;
-	var $_template				= NULL;
-	var $_template_rows			= NULL;
-	var $_test_items_visible	= array();
+	public $active					= TRUE;
+	public $results				= array();
+	public $strict					= FALSE;
+	protected $_template				= NULL;
+	protected $_template_rows			= NULL;
+	protected $_test_items_visible	= array();
 
 	public function __construct()
 	{
@@ -70,11 +70,10 @@
 	 *
 	 * Runs the supplied tests
 	 *
-	 * @access	public
 	 * @param	array
 	 * @return	void
 	 */
-	function set_test_items($items = array())
+	public function set_test_items($items = array())
 	{
 		if ( ! empty($items) AND is_array($items))
 		{
@@ -89,13 +88,12 @@
 	 *
 	 * Runs the supplied tests
 	 *
-	 * @access	public
 	 * @param	mixed
 	 * @param	mixed
 	 * @param	string
 	 * @return	string
 	 */
-	function run($test, $expected = TRUE, $test_name = 'undefined', $notes = '')
+	public function run($test, $expected = TRUE, $test_name = 'undefined', $notes = '')
 	{
 		if ($this->active == FALSE)
 		{
@@ -110,11 +108,7 @@
 		}
 		else
 		{
-			if ($this->strict == TRUE)
-				$result = ($test === $expected) ? TRUE : FALSE;
-			else
-				$result = ($test == $expected) ? TRUE : FALSE;
-
+			$result = ($this->strict == TRUE) ? ($test === $expected) : ($test == $expected);
 			$extype = gettype($expected);
 		}
 
@@ -142,12 +136,11 @@
 	 *
 	 * Displays a table with the test data
 	 *
-	 * @access	public
 	 * @return	string
 	 */
-	function report($result = array())
+	public function report($result = array())
 	{
-		if (count($result) == 0)
+		if (count($result) === 0)
 		{
 			$result = $this->result();
 		}
@@ -176,10 +169,7 @@
 					}
 				}
 
-				$temp = $this->_template_rows;
-				$temp = str_replace('{item}', $key, $temp);
-				$temp = str_replace('{result}', $val, $temp);
-				$table .= $temp;
+				$table .= str_replace(array('{item}', '{result}'), array($key, $val), $this->_template_rows);
 			}
 
 			$r .= str_replace('{rows}', $table, $this->_template);
@@ -195,13 +185,12 @@
 	 *
 	 * Causes the evaluation to use === rather than ==
 	 *
-	 * @access	public
 	 * @param	bool
 	 * @return	null
 	 */
-	function use_strict($state = TRUE)
+	public function use_strict($state = TRUE)
 	{
-		$this->strict = ($state == FALSE) ? FALSE : TRUE;
+		$this->strict = (bool) $state;
 	}
 
 	// --------------------------------------------------------------------
@@ -211,13 +200,12 @@
 	 *
 	 * Enables/disables unit testing
 	 *
-	 * @access	public
 	 * @param	bool
 	 * @return	null
 	 */
-	function active($state = TRUE)
+	public function active($state = TRUE)
 	{
-		$this->active = ($state == FALSE) ? FALSE : TRUE;
+		$this->active = (bool) $state;
 	}
 
 	// --------------------------------------------------------------------
@@ -227,15 +215,14 @@
 	 *
 	 * Returns the raw result data
 	 *
-	 * @access	public
 	 * @return	array
 	 */
-	function result($results = array())
+	public function result($results = array())
 	{
 		$CI =& get_instance();
 		$CI->load->language('unit_test');
 
-		if (count($results) == 0)
+		if (count($results) === 0)
 		{
 			$results = $this->results;
 		}
@@ -285,11 +272,10 @@
 	 *
 	 * This lets us set the template to be used to display results
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	void
 	 */
-	function set_template($template)
+	public function set_template($template)
 	{
 		$this->_template = $template;
 	}
@@ -301,19 +287,17 @@
 	 *
 	 * This lets us show file names and line numbers
 	 *
-	 * @access	private
 	 * @return	array
 	 */
-	function _backtrace()
+	protected function _backtrace()
 	{
 		if (function_exists('debug_backtrace'))
 		{
 			$back = debug_backtrace();
-
-			$file = ( ! isset($back['1']['file'])) ? '' : $back['1']['file'];
-			$line = ( ! isset($back['1']['line'])) ? '' : $back['1']['line'];
-
-			return array('file' => $file, 'line' => $line);
+			return array(
+					'file' => (isset($back[1]['file']) ? $back[1]['file'] : ''),
+					'line' => (isset($back[1]['line']) ? $back[1]['line'] : '')
+				);
 		}
 		return array('file' => 'Unknown', 'line' => 'Unknown');
 	}
@@ -323,19 +307,14 @@
 	/**
 	 * Get Default Template
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _default_template()
+	protected function _default_template()
 	{
-		$this->_template = "\n".'<table style="width:100%; font-size:small; margin:10px 0; border-collapse:collapse; border:1px solid #CCC;">';
-		$this->_template .= '{rows}';
-		$this->_template .= "\n".'</table>';
+		$this->_template = "\n".'<table style="width:100%; font-size:small; margin:10px 0; border-collapse:collapse; border:1px solid #CCC;">{rows}'."\n".'</table>';
 
-		$this->_template_rows = "\n\t".'<tr>';
-		$this->_template_rows .= "\n\t\t".'<th style="text-align: left; border-bottom:1px solid #CCC;">{item}</th>';
-		$this->_template_rows .= "\n\t\t".'<td style="border-bottom:1px solid #CCC;">{result}</td>';
-		$this->_template_rows .= "\n\t".'</tr>';
+		$this->_template_rows = "\n\t<tr>\n\t\t".'<th style="text-align: left; border-bottom:1px solid #CCC;">{item}</th>'
+					. "\n\t\t".'<td style="border-bottom:1px solid #CCC;">{result}</td>'."\n\t</tr>";
 	}
 
 	// --------------------------------------------------------------------
@@ -345,30 +324,23 @@
 	 *
 	 * Harvests the data within the template {pseudo-variables}
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	function _parse_template()
+	protected function _parse_template()
 	{
 		if ( ! is_null($this->_template_rows))
 		{
 			return;
 		}
 
-		if (is_null($this->_template))
+		if (is_null($this->_template) OR ! preg_match("/\{rows\}(.*?)\{\/rows\}/si", $this->_template, $match))
 		{
 			$this->_default_template();
 			return;
 		}
 
-		if ( ! preg_match("/\{rows\}(.*?)\{\/rows\}/si", $this->_template, $match))
-		{
-			$this->_default_template();
-			return;
-		}
-
-		$this->_template_rows = $match['1'];
-		$this->_template = str_replace($match['0'], '{rows}', $this->_template);
+		$this->_template_rows = $match[1];
+		$this->_template = str_replace($match[0], '{rows}', $this->_template);
 	}
 
 }
@@ -377,8 +349,6 @@
 /**
  * Helper functions to test boolean true/false
  *
- *
- * @access	private
  * @return	bool
  */
 function is_true($test)
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 826bcce..0c63886 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index a007ace..cd644c0 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -40,32 +40,31 @@
  */
 class CI_User_agent {
 
-	var $agent		= NULL;
+	public $agent		= NULL;
 
-	var $is_browser	= FALSE;
-	var $is_robot	= FALSE;
-	var $is_mobile	= FALSE;
+	public $is_browser	= FALSE;
+	public $is_robot	= FALSE;
+	public $is_mobile	= FALSE;
 
-	var $languages	= array();
-	var $charsets	= array();
+	public $languages	= array();
+	public $charsets	= array();
 
-	var $platforms	= array();
-	var $browsers	= array();
-	var $mobiles	= array();
-	var $robots		= array();
+	public $platforms	= array();
+	public $browsers	= array();
+	public $mobiles		= array();
+	public $robots		= array();
 
-	var $platform	= '';
-	var $browser	= '';
-	var $version	= '';
-	var $mobile		= '';
-	var $robot		= '';
+	public $platform	= '';
+	public $browser		= '';
+	public $version		= '';
+	public $mobile		= '';
+	public $robot		= '';
 
 	/**
 	 * Constructor
 	 *
 	 * Sets the User Agent and runs the compilation routine
 	 *
-	 * @access	public
 	 * @return	void
 	 */
 	public function __construct()
@@ -91,10 +90,9 @@
 	/**
 	 * Compile the User Agent Data
 	 *
-	 * @access	private
 	 * @return	bool
 	 */
-	private function _load_agent_file()
+	protected function _load_agent_file()
 	{
 		if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/user_agents.php'))
 		{
@@ -147,10 +145,9 @@
 	/**
 	 * Compile the User Agent Data
 	 *
-	 * @access	private
 	 * @return	bool
 	 */
-	private function _compile_data()
+	protected function _compile_data()
 	{
 		$this->_set_platform();
 
@@ -168,10 +165,9 @@
 	/**
 	 * Set the Platform
 	 *
-	 * @access	private
 	 * @return	mixed
 	 */
-	private function _set_platform()
+	protected function _set_platform()
 	{
 		if (is_array($this->platforms) AND count($this->platforms) > 0)
 		{
@@ -192,10 +188,9 @@
 	/**
 	 * Set the Browser
 	 *
-	 * @access	private
 	 * @return	bool
 	 */
-	private function _set_browser()
+	protected function _set_browser()
 	{
 		if (is_array($this->browsers) AND count($this->browsers) > 0)
 		{
@@ -219,10 +214,9 @@
 	/**
 	 * Set the Robot
 	 *
-	 * @access	private
 	 * @return	bool
 	 */
-	private function _set_robot()
+	protected function _set_robot()
 	{
 		if (is_array($this->robots) AND count($this->robots) > 0)
 		{
@@ -244,10 +238,9 @@
 	/**
 	 * Set the Mobile Device
 	 *
-	 * @access	private
 	 * @return	bool
 	 */
-	private function _set_mobile()
+	protected function _set_mobile()
 	{
 		if (is_array($this->mobiles) AND count($this->mobiles) > 0)
 		{
@@ -269,19 +262,16 @@
 	/**
 	 * Set the accepted languages
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	private function _set_languages()
+	protected function _set_languages()
 	{
-		if ((count($this->languages) == 0) AND isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) AND $_SERVER['HTTP_ACCEPT_LANGUAGE'] != '')
+		if ((count($this->languages) === 0) AND isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) AND $_SERVER['HTTP_ACCEPT_LANGUAGE'] != '')
 		{
-			$languages = preg_replace('/(;q=[0-9\.]+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE'])));
-
-			$this->languages = explode(',', $languages);
+			$this->languages = explode(',', preg_replace('/(;q=[0-9\.]+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE']))));
 		}
 
-		if (count($this->languages) == 0)
+		if (count($this->languages) === 0)
 		{
 			$this->languages = array('Undefined');
 		}
@@ -292,19 +282,16 @@
 	/**
 	 * Set the accepted character sets
 	 *
-	 * @access	private
 	 * @return	void
 	 */
-	private function _set_charsets()
+	protected function _set_charsets()
 	{
-		if ((count($this->charsets) == 0) AND isset($_SERVER['HTTP_ACCEPT_CHARSET']) AND $_SERVER['HTTP_ACCEPT_CHARSET'] != '')
+		if ((count($this->charsets) === 0) AND isset($_SERVER['HTTP_ACCEPT_CHARSET']) AND $_SERVER['HTTP_ACCEPT_CHARSET'] != '')
 		{
-			$charsets = preg_replace('/(;q=.+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET'])));
-
-			$this->charsets = explode(',', $charsets);
+			$this->charsets = explode(',', preg_replace('/(;q=.+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET']))));
 		}
 
-		if (count($this->charsets) == 0)
+		if (count($this->charsets) === 0)
 		{
 			$this->charsets = array('Undefined');
 		}
@@ -315,7 +302,6 @@
 	/**
 	 * Is Browser
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function is_browser($key = NULL)
@@ -340,7 +326,6 @@
 	/**
 	 * Is Robot
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function is_robot($key = NULL)
@@ -365,7 +350,6 @@
 	/**
 	 * Is Mobile
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function is_mobile($key = NULL)
@@ -390,16 +374,11 @@
 	/**
 	 * Is this a referral from another site?
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function is_referral()
 	{
-		if ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '')
-		{
-			return FALSE;
-		}
-		return TRUE;
+		return ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? FALSE : TRUE;
 	}
 
 	// --------------------------------------------------------------------
@@ -407,7 +386,6 @@
 	/**
 	 * Agent String
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function agent_string()
@@ -420,7 +398,6 @@
 	/**
 	 * Get Platform
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function platform()
@@ -433,7 +410,6 @@
 	/**
 	 * Get Browser Name
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function browser()
@@ -446,7 +422,6 @@
 	/**
 	 * Get the Browser Version
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function version()
@@ -459,7 +434,6 @@
 	/**
 	 * Get The Robot Name
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function robot()
@@ -471,7 +445,6 @@
 	/**
 	 * Get the Mobile Device
 	 *
-	 * @access	public
 	 * @return	string
 	 */
 	public function mobile()
@@ -484,7 +457,6 @@
 	/**
 	 * Get the referrer
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function referrer()
@@ -497,12 +469,11 @@
 	/**
 	 * Get the accepted languages
 	 *
-	 * @access	public
 	 * @return	array
 	 */
 	public function languages()
 	{
-		if (count($this->languages) == 0)
+		if (count($this->languages) === 0)
 		{
 			$this->_set_languages();
 		}
@@ -515,12 +486,11 @@
 	/**
 	 * Get the accepted Character Sets
 	 *
-	 * @access	public
 	 * @return	array
 	 */
 	public function charsets()
 	{
-		if (count($this->charsets) == 0)
+		if (count($this->charsets) === 0)
 		{
 			$this->_set_charsets();
 		}
@@ -533,7 +503,6 @@
 	/**
 	 * Test for a particular language
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function accept_lang($lang = 'en')
@@ -546,7 +515,6 @@
 	/**
 	 * Test for a particular character set
 	 *
-	 * @access	public
 	 * @return	bool
 	 */
 	public function accept_charset($charset = 'utf-8')
@@ -556,6 +524,5 @@
 
 }
 
-
 /* End of file User_agent.php */
 /* Location: ./system/libraries/User_agent.php */
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
index 7b1e3fa..1bdc275 100644
--- a/system/libraries/Xmlrpc.php
+++ b/system/libraries/Xmlrpc.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
index 587b750..355d43f 100644
--- a/system/libraries/Xmlrpcs.php
+++ b/system/libraries/Xmlrpcs.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -48,12 +48,11 @@
  */
 class CI_Xmlrpcs extends CI_Xmlrpc
 {
-	var $methods		= array();	//array of methods mapped to function names and signatures
-	var $debug_msg		= '';		// Debug Message
-	var $system_methods = array();	// XML RPC Server methods
-	var $controller_obj;
-
-	var $object			= FALSE;
+	public $methods		= array();	//array of methods mapped to function names and signatures
+	public $debug_msg	= '';		// Debug Message
+	public $system_methods	= array();	// XML RPC Server methods
+	public $controller_obj;
+	public $object		= FALSE;
 
 	/**
 	 * Constructor
@@ -80,7 +79,7 @@
 	 * @param	mixed
 	 * @return	void
 	 */
-	function initialize($config=array())
+	public function initialize($config = array())
 	{
 		if (isset($config['functions']) && is_array($config['functions']))
 		{
@@ -111,26 +110,26 @@
 	 * @access	public
 	 * @return	void
 	 */
-	function set_system_methods()
+	public function set_system_methods()
 	{
 		$this->methods = array(
 					'system.listMethods'	 => array(
-													'function' => 'this.listMethods',
-													'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString), array($this->xmlrpcArray)),
-													'docstring' => 'Returns an array of available methods on this server'),
-					'system.methodHelp'		 => array(
-													'function' => 'this.methodHelp',
-													'signature' => array(array($this->xmlrpcString, $this->xmlrpcString)),
-													'docstring' => 'Returns a documentation string for the specified method'),
+										'function' => 'this.listMethods',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString), array($this->xmlrpcArray)),
+										'docstring' => 'Returns an array of available methods on this server'),
+					'system.methodHelp'	 => array(
+										'function' => 'this.methodHelp',
+										'signature' => array(array($this->xmlrpcString, $this->xmlrpcString)),
+										'docstring' => 'Returns a documentation string for the specified method'),
 					'system.methodSignature' => array(
-													'function' => 'this.methodSignature',
-													'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString)),
-													'docstring' => 'Returns an array describing the return type and required parameters of a method'),
-					'system.multicall'		 => array(
-												'function' => 'this.multicall',
-												'signature' => array(array($this->xmlrpcArray, $this->xmlrpcArray)),
-												'docstring' => 'Combine multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details')
-					);
+										'function' => 'this.methodSignature',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcString)),
+										'docstring' => 'Returns an array describing the return type and required parameters of a method'),
+					'system.multicall'	 => array(
+										'function' => 'this.multicall',
+										'signature' => array(array($this->xmlrpcArray, $this->xmlrpcArray)),
+										'docstring' => 'Combine multiple RPC calls in one request. See http://www.xmlrpc.com/discuss/msgReader$1208 for details')
+				);
 	}
 
 	// --------------------------------------------------------------------
@@ -141,12 +140,10 @@
 	 * @access	public
 	 * @return	void
 	 */
-	function serve()
+	public function serve()
 	{
 		$r = $this->parseRequest();
-		$payload  = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n";
-		$payload .= $this->debug_msg;
-		$payload .= $r->prepare_response();
+		$payload = '<?xml version="1.0" encoding="'.$this->xmlrpc_defencoding.'"?'.'>'."\n".$this->debug_msg.$r->prepare_response();
 
 		header("Content-Type: text/xml");
 		header("Content-Length: ".strlen($payload));
@@ -165,7 +162,7 @@
 	 * @param	string	docstring
 	 * @return	void
 	 */
-	function add_to_map($methodname, $function, $sig, $doc)
+	public function add_to_map($methodname, $function, $sig, $doc)
 	{
 		$this->methods[$methodname] = array(
 			'function'  => $function,
@@ -183,7 +180,7 @@
 	 * @param	string	data
 	 * @return	object	xmlrpc response
 	 */
-	function parseRequest($data='')
+	public function parseRequest($data = '')
 	{
 		global $HTTP_RAW_POST_DATA;
 
@@ -203,13 +200,14 @@
 		$parser = xml_parser_create($this->xmlrpc_defencoding);
 		$parser_object = new XML_RPC_Message("filler");
 
-		$parser_object->xh[$parser]					= array();
-		$parser_object->xh[$parser]['isf']			= 0;
-		$parser_object->xh[$parser]['isf_reason']	= '';
-		$parser_object->xh[$parser]['params']		= array();
-		$parser_object->xh[$parser]['stack']		= array();
-		$parser_object->xh[$parser]['valuestack']	= array();
-		$parser_object->xh[$parser]['method']		= '';
+		$parser_object->xh[$parser] = array(
+							'isf' =>	0,
+							'isf_reason' =>	'',
+							'params' =>	array(),
+							'stack' =>	array(),
+							'valuestack' =>	array(),
+							'method' =>	''
+						);
 
 		xml_set_object($parser, $parser_object);
 		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);
@@ -243,7 +241,7 @@
 			$m = new XML_RPC_Message($parser_object->xh[$parser]['method']);
 			$plist='';
 
-			for ($i=0; $i < count($parser_object->xh[$parser]['params']); $i++)
+			for ($i = 0, $c = count($parser_object->xh[$parser]['params']); $i < $c; $i++)
 			{
 				if ($this->debug === TRUE)
 				{
@@ -255,9 +253,7 @@
 
 			if ($this->debug === TRUE)
 			{
-				echo "<pre>";
-				echo "---PLIST---\n" . $plist . "\n---PLIST END---\n\n";
-				echo "</pre>";
+				echo "<pre>---PLIST---\n".$plist."\n---PLIST END---\n\n</pre>";
 			}
 
 			$r = $this->_execute($m);
@@ -284,12 +280,12 @@
 	 * @param	object
 	 * @return	mixed
 	 */
-	function _execute($m)
+	protected function _execute($m)
 	{
 		$methName = $m->method_name;
 
 		// Check to see if it is a system call
-		$system_call = (strncmp($methName, 'system', 5) == 0) ? TRUE : FALSE;
+		$system_call = (strncmp($methName, 'system', 5) === 0);
 
 		if ($this->xss_clean == FALSE)
 		{
@@ -310,22 +306,20 @@
 		//-------------------------------------
 
 		$method_parts = explode(".", $this->methods[$methName]['function']);
-		$objectCall = (isset($method_parts['1']) && $method_parts['1'] != "") ? TRUE : FALSE;
+		$objectCall = (isset($method_parts[1]) && $method_parts[1] != '');
 
 		if ($system_call === TRUE)
 		{
-			if ( ! is_callable(array($this,$method_parts['1'])))
+			if ( ! is_callable(array($this,$method_parts[1])))
 			{
 				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
 			}
 		}
 		else
 		{
-			if ($objectCall && ! is_callable(array($method_parts['0'],$method_parts['1'])))
-			{
-				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
-			}
-			elseif ( ! $objectCall && ! is_callable($this->methods[$methName]['function']))
+			if (($objectCall AND ! is_callable(array($method_parts[0], $method_parts[1])))
+				OR ( ! $objectCall AND ! is_callable($this->methods[$methName]['function']))
+			)
 			{
 				return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
 			}
@@ -338,13 +332,13 @@
 		if (isset($this->methods[$methName]['signature']))
 		{
 			$sig = $this->methods[$methName]['signature'];
-			for ($i=0; $i<count($sig); $i++)
+			for ($i = 0, $c = count($sig); $i < $c; $i++)
 			{
 				$current_sig = $sig[$i];
 
-				if (count($current_sig) == count($m->params)+1)
+				if (count($current_sig) === count($m->params)+1)
 				{
-					for ($n=0; $n < count($m->params); $n++)
+					for ($n = 0, $mc = count($m->params); $n < $mc; $n++)
 					{
 						$p = $m->params[$n];
 						$pt = ($p->kindOf() == 'scalar') ? $p->scalarval() : $p->kindOf();
@@ -370,7 +364,7 @@
 
 		if ($objectCall === TRUE)
 		{
-			if ($method_parts[0] == "this" && $system_call == TRUE)
+			if ($method_parts[0] === 'this' && $system_call === TRUE)
 			{
 				return call_user_func(array($this, $method_parts[1]), $m);
 			}
@@ -379,11 +373,11 @@
 				if ($this->object === FALSE)
 				{
 					$CI =& get_instance();
-					return $CI->$method_parts['1']($m);
+					return $CI->$method_parts[1]($m);
 				}
 				else
 				{
-					return $this->object->$method_parts['1']($m);
+					return $this->object->$method_parts[1]($m);
 					//return call_user_func(array(&$method_parts['0'],$method_parts['1']), $m);
 				}
 			}
@@ -393,7 +387,7 @@
 			return call_user_func($this->methods[$methName]['function'], $m);
 		}
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -403,7 +397,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function listMethods($m)
+	public function listMethods($m)
 	{
 		$v = new XML_RPC_Values();
 		$output = array();
@@ -421,7 +415,7 @@
 		$v->addArray($output);
 		return new XML_RPC_Response($v);
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -431,7 +425,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function methodSignature($m)
+	public function methodSignature($m)
 	{
 		$parameters = $m->output_parameters();
 		$method_name = $parameters[0];
@@ -443,15 +437,15 @@
 				$sigs = array();
 				$signature = $this->methods[$method_name]['signature'];
 
-				for ($i=0; $i < count($signature); $i++)
+				for ($i = 0, $c = count($signature); $i < $c; $i++)
 				{
 					$cursig = array();
 					$inSig = $signature[$i];
-					for ($j=0; $j<count($inSig); $j++)
+					for ($j = 0, $jc = count($inSig); $j < $jc; $j++)
 					{
 						$cursig[]= new XML_RPC_Values($inSig[$j], 'string');
 					}
-					$sigs[]= new XML_RPC_Values($cursig, 'array');
+					$sigs[] = new XML_RPC_Values($cursig, 'array');
 				}
 				$r = new XML_RPC_Response(new XML_RPC_Values($sigs, 'array'));
 			}
@@ -476,7 +470,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function methodHelp($m)
+	public function methodHelp($m)
 	{
 		$parameters = $m->output_parameters();
 		$method_name = $parameters[0];
@@ -492,7 +486,7 @@
 			return new XML_RPC_Response(0, $this->xmlrpcerr['introspect_unknown'], $this->xmlrpcstr['introspect_unknown']);
 		}
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -502,7 +496,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function multicall($m)
+	public function multicall($m)
 	{
 		// Disabled
 		return new XML_RPC_Response(0, $this->xmlrpcerr['unknown_method'], $this->xmlrpcstr['unknown_method']);
@@ -519,7 +513,7 @@
 			$m = new XML_RPC_Message($value[0]);
 			$plist='';
 
-			for ($i=0; $i < count($value[1]); $i++)
+			for ($i = 0, $c = count($value[1]); $i < $c; $i++)
 			{
 				$m->addParam(new XML_RPC_Values($value[1][$i], 'string'));
 			}
@@ -546,7 +540,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function multicall_error($err)
+	public function multicall_error($err)
 	{
 		$str  = is_string($err) ? $this->xmlrpcstr["multicall_${err}"] : $err->faultString();
 		$code = is_string($err) ? $this->xmlrpcerr["multicall_${err}"] : $err->faultCode();
@@ -566,7 +560,7 @@
 	 * @param	mixed
 	 * @return	object
 	 */
-	function do_multicall($call)
+	public function do_multicall($call)
 	{
 		if ($call->kindOf() != 'struct')
 		{
@@ -597,11 +591,10 @@
 			return $this->multicall_error('notarray');
 		}
 
-		list($a,$b)=each($params->me);
-		$numParams = count($b);
+		list($a,$b) = each($params->me);
 
 		$msg = new XML_RPC_Message($scalar_value);
-		for ($i = 0; $i < $numParams; $i++)
+		for ($i = 0, $numParams = count($b); $i < $numParams; $i++)
 		{
 			$msg->params[] = $params->me['array'][$i];
 		}
@@ -619,6 +612,5 @@
 }
 // END XML_RPC_Server class
 
-
 /* End of file Xmlrpcs.php */
-/* Location: ./system/libraries/Xmlrpcs.php */
\ No newline at end of file
+/* Location: ./system/libraries/Xmlrpcs.php */
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 52f1bc3..50e8492 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/libraries/javascript/Jquery.php b/system/libraries/javascript/Jquery.php
index 4b8f76a..03574c6 100644
--- a/system/libraries/javascript/Jquery.php
+++ b/system/libraries/javascript/Jquery.php
@@ -1,13 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -18,7 +18,7 @@
  *
  * @package		CodeIgniter
  * @author		EllisLab Dev Team
- * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+ * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -36,80 +36,77 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/libraries/javascript.html
  */
- 
+
 class CI_Jquery extends CI_Javascript {
 
-	var $_javascript_folder = 'js';
-	var $jquery_code_for_load = array();
-	var $jquery_code_for_compile = array();
-	var $jquery_corner_active = FALSE;
-	var $jquery_table_sorter_active = FALSE;
-	var $jquery_table_sorter_pager_active = FALSE;
-	var $jquery_ajax_img = '';
+	protected $_javascript_folder = 'js';
+	public $jquery_code_for_load = array();
+	public $jquery_code_for_compile = array();
+	public $jquery_corner_active = FALSE;
+	public $jquery_table_sorter_active = FALSE;
+	public $jquery_table_sorter_pager_active = FALSE;
+	public $jquery_ajax_img = '';
 
 	public function __construct($params)
 	{
-		$this->CI =& get_instance();	
+		$this->CI =& get_instance();
 		extract($params);
 
 		if ($autoload === TRUE)
 		{
-			$this->script();			
+			$this->script();
 		}
-		
+
 		log_message('debug', "Jquery Class Initialized");
 	}
-	
-	// --------------------------------------------------------------------	 
+
+	// --------------------------------------------------------------------
 	// Event Code
-	// --------------------------------------------------------------------	
+	// --------------------------------------------------------------------
 
 	/**
 	 * Blur
 	 *
 	 * Outputs a jQuery blur event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _blur($element = 'this', $js = '')
+	protected function _blur($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'blur');
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Change
 	 *
 	 * Outputs a jQuery change event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _change($element = 'this', $js = '')
+	protected function _change($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'change');
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Click
 	 *
 	 * Outputs a jQuery click event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @param	boolean	whether or not to return false
 	 * @return	string
 	 */
-	function _click($element = 'this', $js = '', $ret_false = TRUE)
+	protected function _click($element = 'this', $js = '', $ret_false = TRUE)
 	{
 		if ( ! is_array($js))
 		{
@@ -125,70 +122,66 @@
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Double Click
 	 *
 	 * Outputs a jQuery dblclick event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _dblclick($element = 'this', $js = '')
+	protected function _dblclick($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'dblclick');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Error
 	 *
 	 * Outputs a jQuery error event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _error($element = 'this', $js = '')
+	protected function _error($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'error');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Focus
 	 *
 	 * Outputs a jQuery focus event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _focus($element = 'this', $js = '')
+	protected function _focus($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'focus');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Hover
 	 *
 	 * Outputs a jQuery hover event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- Javascript code for mouse over
 	 * @param	string	- Javascript code for mouse out
 	 * @return	string
 	 */
-	function _hover($element = 'this', $over, $out)
+	protected function _hover($element = 'this', $over, $out)
 	{
 		$event = "\n\t$(" . $this->_prep_element($element) . ").hover(\n\t\tfunction()\n\t\t{\n\t\t\t{$over}\n\t\t}, \n\t\tfunction()\n\t\t{\n\t\t\t{$out}\n\t\t});\n";
 
@@ -198,103 +191,97 @@
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Keydown
 	 *
 	 * Outputs a jQuery keydown event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _keydown($element = 'this', $js = '')
+	protected function _keydown($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'keydown');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Keyup
 	 *
 	 * Outputs a jQuery keydown event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _keyup($element = 'this', $js = '')
+	protected function _keyup($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'keyup');
-	}	
+	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Load
 	 *
 	 * Outputs a jQuery load event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _load($element = 'this', $js = '')
+	protected function _load($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'load');
-	}	
-	
+	}
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Mousedown
 	 *
 	 * Outputs a jQuery mousedown event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _mousedown($element = 'this', $js = '')
+	protected function _mousedown($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'mousedown');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Mouse Out
 	 *
 	 * Outputs a jQuery mouseout event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _mouseout($element = 'this', $js = '')
+	protected function _mouseout($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'mouseout');
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Mouse Over
 	 *
 	 * Outputs a jQuery mouseover event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _mouseover($element = 'this', $js = '')
+	protected function _mouseover($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'mouseover');
 	}
@@ -306,12 +293,11 @@
 	 *
 	 * Outputs a jQuery mouseup event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _mouseup($element = 'this', $js = '')
+	protected function _mouseup($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'mouseup');
 	}
@@ -323,18 +309,17 @@
 	 *
 	 * Outputs script directly
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _output($array_js = '')
+	protected function _output($array_js = '')
 	{
 		if ( ! is_array($array_js))
 		{
 			$array_js = array($array_js);
 		}
-		
+
 		foreach ($array_js as $js)
 		{
 			$this->jquery_code_for_compile[] = "\t$js\n";
@@ -348,12 +333,11 @@
 	 *
 	 * Outputs a jQuery resize event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _resize($element = 'this', $js = '')
+	protected function _resize($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'resize');
 	}
@@ -365,16 +349,15 @@
 	 *
 	 * Outputs a jQuery scroll event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _scroll($element = 'this', $js = '')
+	protected function _scroll($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'scroll');
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -382,34 +365,31 @@
 	 *
 	 * Outputs a jQuery unload event
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @return	string
 	 */
-	function _unload($element = 'this', $js = '')
+	protected function _unload($element = 'this', $js = '')
 	{
 		return $this->_add_event($element, $js, 'unload');
 	}
 
-	// --------------------------------------------------------------------	 
+	// --------------------------------------------------------------------
 	// Effects
-	// --------------------------------------------------------------------	
-	
+	// --------------------------------------------------------------------
+
 	/**
 	 * Add Class
 	 *
 	 * Outputs a jQuery addClass event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function _addClass($element = 'this', $class='')
+	protected function _addClass($element = 'this', $class='')
 	{
 		$element = $this->_prep_element($element);
-		$str  = "$({$element}).addClass(\"$class\");";
-		return $str;
+		return "$({$element}).addClass(\"$class\");";
 	}
 
 	// --------------------------------------------------------------------
@@ -419,19 +399,18 @@
 	 *
 	 * Outputs a jQuery animate event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _animate($element = 'this', $params = array(), $speed = '', $extra = '')
+	protected function _animate($element = 'this', $params = array(), $speed = '', $extra = '')
 	{
 		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		$animations = "\t\t\t";
-		
+
 		foreach ($params as $param=>$value)
 		{
 			$animations .= $param.': \''.$value.'\', ';
@@ -443,71 +422,63 @@
 		{
 			$speed = ', '.$speed;
 		}
-		
+
 		if ($extra != '')
 		{
 			$extra = ', '.$extra;
 		}
-		
-		$str  = "$({$element}).animate({\n$animations\n\t\t}".$speed.$extra.");";
-		
-		return $str;
+
+		return "$({$element}).animate({\n$animations\n\t\t}".$speed.$extra.");";
 	}
 
 	// --------------------------------------------------------------------
-		
+
 	/**
 	 * Fade In
 	 *
 	 * Outputs a jQuery hide event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _fadeIn($element = 'this', $speed = '', $callback = '')
+	protected function _fadeIn($element = 'this', $speed = '', $callback = '')
 	{
-		$element = $this->_prep_element($element);	
+		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).fadeIn({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).fadeIn({$speed}{$callback});";
 	}
-		
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Fade Out
 	 *
 	 * Outputs a jQuery hide event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _fadeOut($element = 'this', $speed = '', $callback = '')
+	protected function _fadeOut($element = 'this', $speed = '', $callback = '')
 	{
 		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).fadeOut({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).fadeOut({$speed}{$callback});";
 	}
 
 	// --------------------------------------------------------------------
@@ -517,27 +488,24 @@
 	 *
 	 * Outputs a jQuery hide action
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _hide($element = 'this', $speed = '', $callback = '')
+	protected function _hide($element = 'this', $speed = '', $callback = '')
 	{
-		$element = $this->_prep_element($element);	
+		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).hide({$speed}{$callback});";
 
-		return $str;
+		return "$({$element}).hide({$speed}{$callback});";
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -545,163 +513,145 @@
 	 *
 	 * Outputs a jQuery remove class event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function _removeClass($element = 'this', $class='')
+	protected function _removeClass($element = 'this', $class='')
 	{
 		$element = $this->_prep_element($element);
-		$str  = "$({$element}).removeClass(\"$class\");";
-		return $str;
+		return "$({$element}).removeClass(\"$class\");";
 	}
 
 	// --------------------------------------------------------------------
-			
+
 	/**
 	 * Slide Up
 	 *
 	 * Outputs a jQuery slideUp event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _slideUp($element = 'this', $speed = '', $callback = '')
+	protected function _slideUp($element = 'this', $speed = '', $callback = '')
 	{
-		$element = $this->_prep_element($element);	
+		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).slideUp({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).slideUp({$speed}{$callback});";
 	}
-		
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Slide Down
 	 *
 	 * Outputs a jQuery slideDown event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _slideDown($element = 'this', $speed = '', $callback = '')
+	protected function _slideDown($element = 'this', $speed = '', $callback = '')
 	{
 		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).slideDown({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).slideDown({$speed}{$callback});";
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Slide Toggle
 	 *
 	 * Outputs a jQuery slideToggle event
 	 *
-	 * @access	public
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _slideToggle($element = 'this', $speed = '', $callback = '')
+	protected function _slideToggle($element = 'this', $speed = '', $callback = '')
 	{
 		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).slideToggle({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).slideToggle({$speed}{$callback});";
 	}
-		
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Toggle
 	 *
 	 * Outputs a jQuery toggle event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function _toggle($element = 'this')
+	protected function _toggle($element = 'this')
 	{
 		$element = $this->_prep_element($element);
-		$str  = "$({$element}).toggle();";
-		return $str;
+		return "$({$element}).toggle();";
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Toggle Class
 	 *
 	 * Outputs a jQuery toggle class event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @return	string
 	 */
-	function _toggleClass($element = 'this', $class='')
+	protected function _toggleClass($element = 'this', $class='')
 	{
 		$element = $this->_prep_element($element);
-		$str  = "$({$element}).toggleClass(\"$class\");";
-		return $str;
+		return "$({$element}).toggleClass(\"$class\");";
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Show
 	 *
 	 * Outputs a jQuery show event
 	 *
-	 * @access	private
 	 * @param	string	- element
 	 * @param	string	- One of 'slow', 'normal', 'fast', or time in milliseconds
 	 * @param	string	- Javascript callback function
 	 * @return	string
 	 */
-	function _show($element = 'this', $speed = '', $callback = '')
+	protected function _show($element = 'this', $speed = '', $callback = '')
 	{
-		$element = $this->_prep_element($element);	
+		$element = $this->_prep_element($element);
 		$speed = $this->_validate_speed($speed);
-		
+
 		if ($callback != '')
 		{
 			$callback = ", function(){\n{$callback}\n}";
 		}
-		
-		$str  = "$({$element}).show({$speed}{$callback});";
-		
-		return $str;
+
+		return "$({$element}).show({$speed}{$callback});";
 	}
 
 	// --------------------------------------------------------------------
@@ -709,22 +659,20 @@
 	/**
 	 * Updater
 	 *
-	 * An Ajax call that populates the designated DOM node with 
+	 * An Ajax call that populates the designated DOM node with
 	 * returned content
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	the controller to run the call against
 	 * @param	string	optional parameters
 	 * @return	string
 	 */
-	
-	function _updater($container = 'this', $controller, $options = '')
-	{	
+
+	protected function _updater($container = 'this', $controller, $options = '')
+	{
 		$container = $this->_prep_element($container);
-		
 		$controller = (strpos('://', $controller) === FALSE) ? $controller : $this->CI->config->site_url($controller);
-		
+
 		// ajaxStart and ajaxStop are better choices here... but this is a stop gap
 		if ($this->CI->config->item('javascript_ajax_img') == '')
 		{
@@ -732,41 +680,38 @@
 		}
 		else
 		{
-			$loading_notifier = '<img src=\'' . $this->CI->config->slash_item('base_url') . $this->CI->config->item('javascript_ajax_img') . '\' alt=\'Loading\' />';
+			$loading_notifier = '<img src=\''.$this->CI->config->slash_item('base_url').$this->CI->config->item('javascript_ajax_img').'\' alt=\'Loading\' />';
 		}
-		
-		$updater = "$($container).empty();\n"; // anything that was in... get it out
-		$updater .= "\t\t$($container).prepend(\"$loading_notifier\");\n"; // to replace with an image
+
+		$updater = "$($container).empty();\n" // anything that was in... get it out
+			. "\t\t$($container).prepend(\"$loading_notifier\");\n"; // to replace with an image
 
 		$request_options = '';
 		if ($options != '')
 		{
-			$request_options .= ", {";
-			$request_options .= (is_array($options)) ? "'".implode("', '", $options)."'" : "'".str_replace(":", "':'", $options)."'";
-			$request_options .= "}";
+			$request_options .= ', {'
+					. (is_array($options) ? "'".implode("', '", $options)."'" : "'".str_replace(":", "':'", $options)."'")
+					. '}';
 		}
 
-		$updater .= "\t\t$($container).load('$controller'$request_options);";
-		return $updater;
+		return $updater."\t\t$($container).load('$controller'$request_options);";
 	}
 
 
 	// --------------------------------------------------------------------
 	// Pre-written handy stuff
 	// --------------------------------------------------------------------
-	 
+
 	/**
 	 * Zebra tables
 	 *
-	 * @access	private
 	 * @param	string	table name
 	 * @param	string	plugin location
 	 * @return	string
 	 */
-	function _zebraTables($class = '', $odd = 'odd', $hover = '')
+	protected function _zebraTables($class = '', $odd = 'odd', $hover = '')
 	{
 		$class = ($class != '') ? '.'.$class : '';
-		
 		$zebra  = "\t\$(\"table{$class} tbody tr:nth-child(even)\").addClass(\"{$odd}\");";
 
 		$this->jquery_code_for_compile[] = $zebra;
@@ -779,22 +724,19 @@
 		return $zebra;
 	}
 
-
-
 	// --------------------------------------------------------------------
 	// Plugins
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Corner Plugin
 	 *
 	 * http://www.malsup.com/jquery/corner/
 	 *
-	 * @access	public
 	 * @param	string	target
 	 * @return	string
 	 */
-	function corner($element = '', $corner_style = '')
+	public function corner($element = '', $corner_style = '')
 	{
 		// may want to make this configurable down the road
 		$corner_location = '/plugins/jquery.corner.js';
@@ -806,7 +748,7 @@
 
 		return "$(" . $this->_prep_element($element) . ").corner(".$corner_style.");";
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -814,11 +756,10 @@
 	 *
 	 * Load a thickbox modal window
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function modal($src, $relative = FALSE)
-	{	
+	public function modal($src, $relative = FALSE)
+	{
 		$this->jquery_code_for_load[] = $this->external($src, $relative);
 	}
 
@@ -829,10 +770,9 @@
 	 *
 	 * Load an Effect library
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function effect($src, $relative = FALSE)
+	public function effect($src, $relative = FALSE)
 	{
 		$this->jquery_code_for_load[] = $this->external($src, $relative);
 	}
@@ -844,10 +784,9 @@
 	 *
 	 * Load a plugin library
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function plugin($src, $relative = FALSE)
+	public function plugin($src, $relative = FALSE)
 	{
 		$this->jquery_code_for_load[] = $this->external($src, $relative);
 	}
@@ -859,10 +798,9 @@
 	 *
 	 * Load a user interface library
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function ui($src, $relative = FALSE)
+	public function ui($src, $relative = FALSE)
 	{
 		$this->jquery_code_for_load[] = $this->external($src, $relative);
 	}
@@ -873,10 +811,9 @@
 	 *
 	 * Creates a jQuery sortable
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function sortable($element, $options = array())
+	public function sortable($element, $options = array())
 	{
 
 		if (count($options) > 0)
@@ -901,16 +838,15 @@
 	/**
 	 * Table Sorter Plugin
 	 *
-	 * @access	public
 	 * @param	string	table name
 	 * @param	string	plugin location
 	 * @return	string
 	 */
-	function tablesorter($table = '', $options = '')
+	public function tablesorter($table = '', $options = '')
 	{
 		$this->jquery_code_for_compile[] = "\t$(" . $this->_prep_element($table) . ").tablesorter($options);\n";
 	}
-	
+
 	// --------------------------------------------------------------------
 	// Class functions
 	// --------------------------------------------------------------------
@@ -920,13 +856,12 @@
 	 *
 	 * Constructs the syntax for an event, and adds to into the array for compilation
 	 *
-	 * @access	private
 	 * @param	string	The element to attach the event to
 	 * @param	string	The code to execute
 	 * @param	string	The event to pass
 	 * @return	string
-	 */	
-	function _add_event($element, $js, $event)
+	 */
+	protected function _add_event($element, $js, $event)
 	{
 		if (is_array($js))
 		{
@@ -947,65 +882,61 @@
 	 * As events are specified, they are stored in an array
 	 * This funciton compiles them all for output on a page
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _compile($view_var = 'script_foot', $script_tags = TRUE)
+	protected function _compile($view_var = 'script_foot', $script_tags = TRUE)
 	{
 		// External references
 		$external_scripts = implode('', $this->jquery_code_for_load);
 		$this->CI->load->vars(array('library_src' => $external_scripts));
 
-		if (count($this->jquery_code_for_compile) == 0 )
+		if (count($this->jquery_code_for_compile) === 0)
 		{
 			// no inline references, let's just return
 			return;
 		}
 
 		// Inline references
-		$script = '$(document).ready(function() {' . "\n";
-		$script .= implode('', $this->jquery_code_for_compile);
-		$script .= '});';
-		
+		$script = '$(document).ready(function() {'."\n"
+			. implode('', $this->jquery_code_for_compile)
+			. '});';
+
 		$output = ($script_tags === FALSE) ? $script : $this->inline($script);
 
 		$this->CI->load->vars(array($view_var => $output));
 
 	}
-	
+
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Clear Compile
 	 *
 	 * Clears the array of script events collected for output
 	 *
-	 * @access	public
 	 * @return	void
 	 */
-	function _clear_compile()
+	protected function _clear_compile()
 	{
 		$this->jquery_code_for_compile = array();
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Document Ready
 	 *
 	 * A wrapper for writing document.ready()
 	 *
-	 * @access	private
 	 * @return	string
 	 */
-	function _document_ready($js)
+	protected function _document_ready($js)
 	{
 		if ( ! is_array($js))
 		{
-			$js = array ($js);
-
+			$js = array($js);
 		}
-		
+
 		foreach ($js as $script)
 		{
 			$this->jquery_code_for_compile[] = $script;
@@ -1019,17 +950,16 @@
 	 *
 	 * Outputs the script tag that loads the jquery.js file into an HTML document
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function script($library_src = '', $relative = FALSE)
+	public function script($library_src = '', $relative = FALSE)
 	{
 		$library_src = $this->external($library_src, $relative);
 		$this->jquery_code_for_load[] = $library_src;
 		return $library_src;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1039,20 +969,19 @@
 	 * unless the supplied element is the Javascript 'this'
 	 * object, in which case no quotes are added
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	string
 	 */
-	function _prep_element($element)
+	protected function _prep_element($element)
 	{
 		if ($element != 'this')
 		{
 			$element = '"'.$element.'"';
 		}
-		
+
 		return $element;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -1060,25 +989,24 @@
 	 *
 	 * Ensures the speed parameter is valid for jQuery
 	 *
-	 * @access	private
 	 * @param	string
 	 * @return	string
-	 */	
-	function _validate_speed($speed)
+	 */
+	protected function _validate_speed($speed)
 	{
 		if (in_array($speed, array('slow', 'normal', 'fast')))
 		{
-			$speed = '"'.$speed.'"';
+			return '"'.$speed.'"';
 		}
 		elseif (preg_match("/[^0-9]/", $speed))
 		{
-			$speed = '';
+			return '';
 		}
-	
+
 		return $speed;
 	}
 
 }
 
 /* End of file Jquery.php */
-/* Location: ./system/libraries/Jquery.php */
\ No newline at end of file
+/* Location: ./system/libraries/Jquery.php */
diff --git a/user_guide_src/cilexer/cilexer/cilexer.py b/user_guide_src/cilexer/cilexer/cilexer.py
index e571ce6..713268e 100644
--- a/user_guide_src/cilexer/cilexer/cilexer.py
+++ b/user_guide_src/cilexer/cilexer/cilexer.py
@@ -15,7 +15,7 @@
 # through the world wide web, please send an email to
 # licensing@ellislab.com so we can send you a copy immediately.
 # 
-# Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+# Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
 # http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 
 
diff --git a/user_guide_src/source/_themes/eldocs/static/asset/css/common.css b/user_guide_src/source/_themes/eldocs/static/asset/css/common.css
index 45b1fe7..b9e28ae 100644
--- a/user_guide_src/source/_themes/eldocs/static/asset/css/common.css
+++ b/user_guide_src/source/_themes/eldocs/static/asset/css/common.css
@@ -16,7 +16,7 @@
 through the world wide web, please send an email to
 licensing@ellislab.com so we can send you a copy immediately.
 
-Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/)
+Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
 http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 */
 
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 54237e3..668f073 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -24,10 +24,13 @@
    -  Added Windows 7 to the list of user platforms.
    -  Ability to log certain error types, not all under a threshold.
    -  Added support for pem, p10, p12, p7a, p7c, p7m, p7r, p7s, crt, crl, der, kdb, rsa, cer, sst, csr Certs to mimes.php.
-   -  Added support pgp and gpg to mimes.php.
-   -  Added support 3gp, 3g2, mp4, wmv, f4v, vlc Video files to mimes.php.
-   -  Added support m4a, aac, m4u, xspf, au, ac3, flac, ogg Audio files to mimes.php.
+   -  Added support for pgp and gpg to mimes.php.
+   -  Added support for 3gp, 3g2, mp4, wmv, f4v, vlc Video files to mimes.php.
+   -  Added support for m4a, aac, m4u, xspf, au, ac3, flac, ogg Audio files to mimes.php.
+   -  Added support for kmz and kml (Google Earth) files to mimes.php.
+   -  Added application/xml for xml and application/xml, text/xsl for xsl in mimes.php.
    -  Changed logger to only chmod when file is first created.
+   -  Removed previously deprecated SHA1 Library.
 
 -  Helpers
 
@@ -53,13 +56,20 @@
 	 -  It now auto-increments quantity's instead of just resetting it, this is the default behaviour of large e-commerce sites.
 	 -  Product Name strictness can be disabled via the Cart Library by switching "$product_name_safe"
 	 -  Added function remove() to remove a cart item, updating with quantity of 0 seemed like a hack but has remained to retain compatability
+   -  Image manipulation library changes include:
+	 -  The initialize() method now only sets existing class properties.
+	 -  Added support for 3-length hex color values for wm_font_color and wm_shadow_color properties, as well as validation for them.
+	 -  Class properties wm_font_color, wm_shadow_color and wm_use_drop_shadow are now protected, to avoid breaking the text_watermark() method
+	    if they are set manually after initialization.
    -  Minor speed optimizations and method & property visibility declarations in the Calendar Library.
+   -  Removed SHA1 function in the :doc:`Encryption Library <libraries/encryption>`.
 
 -  Core
 
    -  Changed private functions in CI_URI to protected so MY_URI can
       override them.
    -  Removed CI_CORE boolean constant from CodeIgniter.php (no longer Reactor and Core versions).
+   -  Added method get_vars() to CI_Loader to retrieve all variables loaded with $this->load->vars()
 
 Bug fixes for 3.0
 ------------------
@@ -80,6 +90,10 @@
 -  Fixed a bug in CI_Cart::contents() where if called without a TRUE (or equal) parameter, it would fail due to a typo.
 -  Fixed a bug (#696) - make oci_execute calls inside num_rows non-committing, since they are only there to reset which row is next in line for oci_fetch calls and thus don't need to be committed.
 -  Fixed a bug (#406) - sqlsrv DB driver not reuturning resource on <samp>db_pconnect()</samp>.
+-  Fixed a bug in CI_Image_lib::gd_loaded() where it was possible for the script execution to end or a PHP E_WARNING message to be emitted.
+-  In Pagination library, when use_page_numbers=TRUE previous link and page 1 link do not have the same url
+
+
 
 Version 2.1.0
 =============
diff --git a/user_guide_src/source/conf.py b/user_guide_src/source/conf.py
index bb10d06..593ceaf 100644
--- a/user_guide_src/source/conf.py
+++ b/user_guide_src/source/conf.py
@@ -41,7 +41,7 @@
 
 # General information about the project.
 project = u'CodeIgniter'
-copyright = u'2011, EllisLab, Inc.'
+copyright = u'2012, EllisLab, Inc.'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -223,7 +223,7 @@
 epub_title = u'CodeIgniter'
 epub_author = u'EllisLab, Inc.'
 epub_publisher = u'EllisLab, Inc.'
-epub_copyright = u'2011, EllisLab, Inc.'
+epub_copyright = u'2012, EllisLab, Inc.'
 
 # The language of the text. It defaults to the language option
 # or en if the language is not set.
diff --git a/user_guide_src/source/database/active_record.rst b/user_guide_src/source/database/active_record.rst
index 1600f0b..c04e67d 100644
--- a/user_guide_src/source/database/active_record.rst
+++ b/user_guide_src/source/database/active_record.rst
@@ -45,7 +45,7 @@
 $query, which can be used to show the results::
 
 	$query = $this->db->get('mytable');
-	
+
 	foreach ($query->result() as $row)
 	{
 		echo $row->title;
@@ -57,31 +57,31 @@
 $this->db->get_compiled_select()
 ================================
 
-Compiles the selection query just like `$this->db->get()`_ but does not *run* 
+Compiles the selection query just like `$this->db->get()`_ but does not *run*
 the query. This method simply returns the SQL query as a string.
 
 Example::
 
 	$sql = $this->db->get_compiled_select('mytable');
 	echo $sql;
-	
+
 	// Produces string: SELECT * FROM mytable
-	
-The second parameter enables you to set whether or not the active record query 
+
+The second parameter enables you to set whether or not the active record query
 will be reset (by default it will be&mdash;just like `$this->db->get()`)::
 
 	echo $this->db->limit(10,20)->get_compiled_select('mytable', FALSE);
-	// Produces string: SELECT * FROM mytable LIMIT 20, 10 
+	// Produces string: SELECT * FROM mytable LIMIT 20, 10
 	// (in MySQL. Other databases have slightly different syntax)
-	
+
 	echo $this->db->select('title, content, date')->get_compiled_select();
 
 	// Produces string: SELECT title, content, date FROM mytable
-	
-The key thing to notice in the above example is that the second query did not 
-utilize `$this->db->from()`_ and did not pass a table name into the first 
-parameter. The reason for this outcome is because the query has not been 
-executed using `$this->db->get()`_ which resets values or reset directly 
+
+The key thing to notice in the above example is that the second query did not
+utilize `$this->db->from()`_ and did not pass a table name into the first
+parameter. The reason for this outcome is because the query has not been
+executed using `$this->db->get()`_ which resets values or reset directly
 using `$this->db->reset_query()`_.
 
 
@@ -116,7 +116,7 @@
 
 ::
 
-	$this->db->select('(SELECT SUM(payments.amount) FROM payments WHERE payments.invoice_id=4') AS amount_paid', FALSE); 
+	$this->db->select('(SELECT SUM(payments.amount) FROM payments WHERE payments.invoice_id=4') AS amount_paid', FALSE);
 	$query = $this->db->get('mytable');
 
 
@@ -130,7 +130,7 @@
 
 	$this->db->select_max('age');
 	$query = $this->db->get('members');  // Produces: SELECT MAX(age) as age FROM members
-	
+
 	$this->db->select_max('age', 'member_age');
 	$query = $this->db->get('members'); // Produces: SELECT MAX(age) as member_age FROM members
 
@@ -195,7 +195,7 @@
 	$this->db->from('blogs');
 	$this->db->join('comments', 'comments.id = blogs.id');
 	$query = $this->db->get();
-	
+
 	// Produces:
 	// SELECT * FROM blogs JOIN comments ON comments.id = blogs.id
 
@@ -224,7 +224,7 @@
 
 	::
 
-		$this->db->where('name', $name); // Produces: WHERE name = 'Joe' 
+		$this->db->where('name', $name); // Produces: WHERE name = 'Joe'
 
 	Notice that the equal sign is added for you.
 
@@ -236,7 +236,7 @@
 		$this->db->where('name', $name);
 		$this->db->where('title', $title);
 		$this->db->where('status', $status);
-		// WHERE name = 'Joe' AND title = 'boss' AND status = 'active'  
+		// WHERE name = 'Joe' AND title = 'boss' AND status = 'active'
 
 #. **Custom key/value method:**
 	You can include an operator in the first parameter in order to
@@ -245,7 +245,7 @@
 	::
 
 		$this->db->where('name !=', $name);
-		$this->db->where('id <', $id); // Produces: WHERE name != 'Joe' AND id < 45    
+		$this->db->where('id <', $id); // Produces: WHERE name != 'Joe' AND id < 45
 
 #. **Associative array method:**
 
@@ -253,7 +253,7 @@
 
 		$array = array('name' => $name, 'title' => $title, 'status' => $status);
 		$this->db->where($array);
-		// Produces: WHERE name = 'Joe' AND title = 'boss' AND status = 'active'    
+		// Produces: WHERE name = 'Joe' AND title = 'boss' AND status = 'active'
 
 	You can include your own operators using this method as well:
 
@@ -354,7 +354,7 @@
 
 	::
 
-		$this->db->like('title', 'match');     // Produces: WHERE title LIKE '%match%' 
+		$this->db->like('title', 'match');     // Produces: WHERE title LIKE '%match%'
 
 	If you use multiple function calls they will be chained together with
 	AND between them::
@@ -371,7 +371,7 @@
 
 		$this->db->like('title', 'match', 'before');	// Produces: WHERE title LIKE '%match'
 		$this->db->like('title', 'match', 'after');		// Produces: WHERE title LIKE 'match%'
-		$this->db->like('title', 'match', 'both');		// Produces: WHERE title LIKE '%match%' 
+		$this->db->like('title', 'match', 'both');		// Produces: WHERE title LIKE '%match%'
 
 #. **Associative array method:**
 
@@ -443,7 +443,7 @@
 possible syntaxes, 1 argument or 2::
 
 	$this->db->having('user_id = 45');  // Produces: HAVING user_id = 45
-	$this->db->having('user_id',  45);  // Produces: HAVING user_id = 45 
+	$this->db->having('user_id',  45);  // Produces: HAVING user_id = 45
 
 You can also pass an array of multiple values as well::
 
@@ -486,7 +486,7 @@
 ::
 
 	$this->db->order_by("title", "desc");
-	$this->db->order_by("name", "asc"); // Produces: ORDER BY title DESC, name ASC     
+	$this->db->order_by("name", "asc"); // Produces: ORDER BY title DESC, name ASC
 
 
 .. note:: order_by() was formerly known as orderby(), which has been
@@ -518,7 +518,7 @@
 	echo $this->db->count_all_results('my_table');  // Produces an integer, like 25
 	$this->db->like('title', 'match');
 	$this->db->from('my_table');
-	echo $this->db->count_all_results(); // Produces an integer, like 17 
+	echo $this->db->count_all_results(); // Produces an integer, like 17
 
 $this->db->count_all()
 ======================
@@ -529,6 +529,54 @@
 	echo $this->db->count_all('my_table');  // Produces an integer, like 25
 
 **************
+Query grouping
+**************
+
+Query grouping allows you to create groups of WHERE clauses by enclosing them in parentheses. This will allow
+you to create queries with complex WHERE clauses. Nested groups are supported. Example:
+
+	$this->db->select('*')->from('my_table')
+		->group_start()
+			->where('a', 'a')
+			->or_group_start()
+				->where('b', 'b')
+				->where('c', 'c')
+			->group_end()
+		->group_end()
+		->where('d', 'd')
+	->get();
+
+	// Generates:
+	// SELECT * FROM (`my_table`) WHERE ( `a` = 'a' OR ( `b` = 'b' AND `c` = 'c' ) ) AND `d` = 'd'
+
+.. note:: groups need to be balanced, make sure every group_start() is matched by a group_end().
+
+$this->db->group_start()
+========================
+
+Starts a new group by adding an opening parenthesis to the WHERE clause of the query.
+
+$this->db->or_group_start()
+===========================
+
+Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with 'OR'.
+
+$this->db->not_group_start()
+============================
+
+Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with 'NOT'.
+
+$this->db->or_not_group_start()
+===============================
+
+Starts a new group by adding an opening parenthesis to the WHERE clause of the query, prefixing it with 'OR NOT'.
+
+$this->db->group_end()
+======================
+
+Ends the current group by adding an closing parenthesis to the WHERE clause of the query.
+
+**************
 Inserting Data
 **************
 
@@ -544,7 +592,7 @@
 		'name' => 'My Name',
 		'date' => 'My date'
 	);
-	
+
 	$this->db->insert('mytable', $data);
 	// Produces: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')
 
@@ -560,7 +608,7 @@
 		var  $date = 'My Date';
 	}
 	*/
-	
+
 	$object = new Myclass;
 	$this->db->insert('mytable', $object);
 	// Produces: INSERT INTO mytable (title, content, date) VALUES ('My Title', 'My Content', 'My Date')
@@ -572,7 +620,7 @@
 
 $this->db->get_compiled_insert()
 ================================
-Compiles the insertion query just like `$this->db->insert()`_ but does not 
+Compiles the insertion query just like `$this->db->insert()`_ but does not
 *run* the query. This method simply returns the SQL query as a string.
 
 Example::
@@ -582,27 +630,27 @@
 		'name'  => 'My Name',
 		'date'  => 'My date'
 	);
-	
+
 	$sql = $this->db->set($data)->get_compiled_insert('mytable');
 	echo $sql;
-	
+
 	// Produces string: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')
 
-The second parameter enables you to set whether or not the active record query 
+The second parameter enables you to set whether or not the active record query
 will be reset (by default it will be--just like `$this->db->insert()`_)::
-	
+
 	echo $this->db->set('title', 'My Title')->get_compiled_insert('mytable', FALSE);
-	
+
 	// Produces string: INSERT INTO mytable (title) VALUES ('My Title')
-	
+
 	echo $this->db->set('content', 'My Content')->get_compiled_insert();
 
 	// Produces string: INSERT INTO mytable (title, content) VALUES ('My Title', 'My Content')
-	
-The key thing to notice in the above example is that the second query did not 
-utlize `$this->db->from()`_ nor did it pass a table name into the first 
-parameter. The reason this worked is because the query has not been executed 
-using `$this->db->insert()`_ which resets values or reset directly using 
+
+The key thing to notice in the above example is that the second query did not
+utlize `$this->db->from()`_ nor did it pass a table name into the first
+parameter. The reason this worked is because the query has not been executed
+using `$this->db->insert()`_ which resets values or reset directly using
 `$this->db->reset_query()`_.
 
 $this->db->insert_batch()
@@ -624,7 +672,7 @@
 			'date' => 'Another date'
 		)
 	);
-	
+
 	$this->db->insert_batch('mytable', $data);
 	// Produces: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date'),  ('Another title', 'Another name', 'Another date')
 
@@ -652,7 +700,7 @@
 	$this->db->set('name', $name);
 	$this->db->set('title', $title);
 	$this->db->set('status', $status);
-	$this->db->insert('mytable'); 
+	$this->db->insert('mytable');
 
 **set()** will also accept an optional third parameter ($escape), that
 will prevent data from being escaped if set to FALSE. To illustrate the
@@ -674,7 +722,7 @@
 		'title' => $title,
 		'status' => $status
 	);
-	
+
 	$this->db->set($array);
 	$this->db->insert('mytable');
 
@@ -687,7 +735,7 @@
 		var  $date = 'My Date';
 	}
 	*/
-	
+
 	$object = new Myclass;
 	$this->db->set($object);
 	$this->db->insert('mytable');
@@ -709,7 +757,7 @@
 		'name' => $name,
 		'date' => $date
 	);
-	
+
 	$this->db->where('id', $id);
 	$this->db->update('mytable', $data);
 	// Produces: // UPDATE mytable  // SET title = '{$title}', name = '{$name}', date = '{$date}' // WHERE id = $id
@@ -723,7 +771,7 @@
 		var  $date = 'My Date';
 	}
 	*/
-	
+
 	$object = new Myclass;
 	$this->db->where('id', $id);
 	$this->db->update('mytable', $object);
@@ -764,14 +812,14 @@
 	   )
 	);
 
-	$this->db->update_batch('mytable', $data, 'title'); 
+	$this->db->update_batch('mytable', $data, 'title');
 
-	// Produces: 
+	// Produces:
 	// UPDATE `mytable` SET `name` = CASE
 	// WHEN `title` = 'My title' THEN 'My Name 2'
 	// WHEN `title` = 'Another title' THEN 'Another Name 2'
 	// ELSE `name` END,
-	// `date` = CASE 
+	// `date` = CASE
 	// WHEN `title` = 'My title' THEN 'My date 2'
 	// WHEN `title` = 'Another title' THEN 'Another date 2'
 	// ELSE `date` END
@@ -810,7 +858,7 @@
 
 	$this->db->where('id', $id);
 	$this->db->delete('mytable');
-	
+
 	// Produces:
 	// DELETE FROM mytable
 	// WHERE id = $id
@@ -847,17 +895,17 @@
 
 	$this->db->from('mytable');
 	$this->db->truncate();
-	
-	// or  
-	
+
+	// or
+
 	$this->db->truncate('mytable');
-	
+
 	// Produce:
-	// TRUNCATE mytable 
+	// TRUNCATE mytable
 
 .. note:: If the TRUNCATE command isn't available, truncate() will
 	execute as "DELETE FROM table".
-	
+
 $this->db->get_compiled_delete()
 ================================
 This works exactly the same way as ``$this->db->get_compiled_insert()`` except
@@ -917,11 +965,11 @@
 	$this->db->stop_cache();
 	$this->db->get('tablename');
 	//Generates: SELECT `field1` FROM (`tablename`)
-	
+
 	$this->db->select('field2');
 	$this->db->get('tablename');
 	//Generates:  SELECT `field1`, `field2` FROM (`tablename`)
-	
+
 	$this->db->flush_cache();
 	$this->db->select('field2');
 	$this->db->get('tablename');
@@ -935,13 +983,13 @@
 $this->db->reset_query()
 ========================
 
-Resetting Active Record allows you to start fresh with your query without 
-executing it first using a method like $this->db->get() or $this->db->insert(). 
-Just like the methods that execute a query, this will *not* reset items you've 
+Resetting Active Record allows you to start fresh with your query without
+executing it first using a method like $this->db->get() or $this->db->insert().
+Just like the methods that execute a query, this will *not* reset items you've
 cached using `Active Record Caching`_.
 
-This is useful in situations where you are using Active Record to generate SQL 
-(ex. ``$this->db->get_compiled_select()``) but then choose to, for instance, 
+This is useful in situations where you are using Active Record to generate SQL
+(ex. ``$this->db->get_compiled_select()``) but then choose to, for instance,
 run the query::
 
 	// Note that the second parameter of the get_compiled_select method is FALSE
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
new file mode 100644
index 0000000..960485a
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -0,0 +1,28 @@
+#############################
+Upgrading from 2.1.0 to 3.0.0
+#############################
+
+.. note:: These upgrade notes are for a version that is yet to be released.
+
+
+Before performing an update you should take your site offline by
+replacing the index.php file with a static one.
+
+Step 1: Update your CodeIgniter files
+=====================================
+
+Replace all files and directories in your "system" folder and replace
+your index.php file. If any modifications were made to your index.php
+they will need to be made fresh in this new one.
+
+Step 2: Change References to the SHA Library
+============================================
+
+The previously deprecated SHA library has been removed in CodeIgniter 3.0.
+Alter your code to use the native `sha1()` PHP function to generate a sha1 hash.
+
+Additionally, the `sha1()` method in the :doc:`Encryption Library <../libraries/encryption>` has been removed.
+
+
+.. note:: If you have any custom developed files in these folders please
+	make copies of them first.
diff --git a/user_guide_src/source/libraries/encryption.rst b/user_guide_src/source/libraries/encryption.rst
index 80b45e4..28bdca2 100644
--- a/user_guide_src/source/libraries/encryption.rst
+++ b/user_guide_src/source/libraries/encryption.rst
@@ -126,21 +126,6 @@
 Please visit php.net for a list of `available
 modes <http://php.net/mcrypt>`_.
 
-$this->encrypt->sha1();
-=======================
-
-SHA1 encoding function. Provide a string and it will return a 160 bit
-one way hash. Note: SHA1, just like MD5 is non-decodable. Example::
-
-	$hash = $this->encrypt->sha1('Some string');
-
-Many PHP installations have SHA1 support by default so if all you need
-is to encode a hash it's simpler to use the native function::
-
-	$hash = sha1('Some string');
-
-If your server does not support SHA1 you can use the provided function.
-
 $this->encrypt->encode_from_legacy($orig_data, $legacy_mode = MCRYPT_MODE_ECB, $key = '');
 ==========================================================================================
 
diff --git a/user_guide_src/source/libraries/image_lib.rst b/user_guide_src/source/libraries/image_lib.rst
index 14bd128..ed6575c 100644
--- a/user_guide_src/source/libraries/image_lib.rst
+++ b/user_guide_src/source/libraries/image_lib.rst
@@ -390,13 +390,11 @@
 **wm_font_size**        16                  None                The size of the text. Note: If you are not using the True Type option
                                                                 above, the number is set using a range of 1 - 5. Otherwise, you can use
                                                                 any valid pixel size for the font you're using.
-**wm_font_color**       ffffff              None                The font color, specified in hex. Note, you must use the full 6
-                                                                character hex value (ie, 993300), rather than the three character
-                                                                abbreviated version (ie fff).
+**wm_font_color**       ffffff              None                The font color, specified in hex. Both the full 6-length (ie, 993300) and
+                                                                the short three character abbreviated version (ie, fff) are supported.
 **wm_shadow_color**     None                None                The color of the drop shadow, specified in hex. If you leave this blank
-                                                                a drop shadow will not be used. Note, you must use the full 6 character
-                                                                hex value (ie, 993300), rather than the three character abbreviated
-                                                                version (ie fff).
+                                                                a drop shadow will not be used. Both the full 6-length (ie, 993300) and
+                                                                the short three character abbreviated version (ie, fff) are supported.
 **wm_shadow_distance**  3                   None                The distance (in pixels) from the font that the drop shadow should
                                                                 appear.
 ======================= =================== =================== ==========================================================================
diff --git a/user_guide_src/source/libraries/loader.rst b/user_guide_src/source/libraries/loader.rst
index bbe2ed5..2090404 100644
--- a/user_guide_src/source/libraries/loader.rst
+++ b/user_guide_src/source/libraries/loader.rst
@@ -165,6 +165,12 @@
 your views. This is useful if for any reason a var is set in a library
 or another controller method using $this->load->vars().
 
+$this->load->get_vars()
+===========================
+
+This function retrieves all variables available to
+your views.
+
 $this->load->helper('file_name')
 =================================
 
diff --git a/user_guide_src/source/tutorial/news_section.rst b/user_guide_src/source/tutorial/news_section.rst
index fe8e416..38e4214 100644
--- a/user_guide_src/source/tutorial/news_section.rst
+++ b/user_guide_src/source/tutorial/news_section.rst
@@ -149,7 +149,7 @@
         <div id="main">
             <?php echo $news_item['text'] ?>
         </div>
-        <p><a href="news/<?php echo $news_item['slug'] ?>">View article</a></p>
+        <p><a href="<?php echo $news_item['slug'] ?>">View article</a></p>
 
     <?php endforeach ?>
 
diff --git a/user_guide_src/source/tutorial/static_pages.rst b/user_guide_src/source/tutorial/static_pages.rst
index 82de2a8..c7f7379 100644
--- a/user_guide_src/source/tutorial/static_pages.rst
+++ b/user_guide_src/source/tutorial/static_pages.rst
@@ -72,7 +72,7 @@
 
 ::
 
-            <em>&copy; 2011</em>
+            <em>&copy; 2012</em>
         </body>
     <html>