diff --git a/system/libraries/Loader.php b/system/libraries/Loader.php
index 1d88841..b870ffb 100644
--- a/system/libraries/Loader.php
+++ b/system/libraries/Loader.php
@@ -35,6 +35,7 @@
 	var $_ci_is_instance 	= FALSE; // Whether we should use $this or $CI =& get_instance()
 	var $_ci_cached_vars	= array();
 	var $_ci_classes		= array();
+	var $_ci_loaded_files	= array();
 	var $_ci_models			= array();
 	var $_ci_helpers		= array();
 	var $_ci_plugins		= array();
@@ -809,7 +810,7 @@
 				}
 
 				// Safety:  Was the class already loaded by a previous call?
-				if (in_array($subclass, $this->_ci_classes))
+				if (in_array($subclass, $this->_ci_loaded_files))
 				{
 					// Before we deem this to be a duplicate request, let's see
 					// if a custom object name is being supplied.  If so, we'll
@@ -830,7 +831,7 @@
 	
 				include_once($baseclass);				
 				include_once($subclass);
-				$this->_ci_classes[] = $subclass;
+				$this->_ci_loaded_files[] = $subclass;
 	
 				return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);			
 			}
@@ -849,7 +850,7 @@
 				}
 				
 				// Safety:  Was the class already loaded by a previous call?
-				if (in_array($filepath, $this->_ci_classes))
+				if (in_array($filepath, $this->_ci_loaded_files))
 				{
 					// Before we deem this to be a duplicate request, let's see
 					// if a custom object name is being supplied.  If so, we'll
@@ -869,7 +870,7 @@
 				}
 				
 				include_once($filepath);
-				$this->_ci_classes[] = $filepath;
+				$this->_ci_loaded_files[] = $filepath;
 				return $this->_ci_init_class($class, '', $params, $object_name);
 			}
 		} // END FOREACH
@@ -933,7 +934,10 @@
 		{
 			$classvar = $object_name;
 		}
-				
+
+		// Save the class name and object name		
+		$this->_ci_classes[$class] = $object_name;
+
 		// Instantiate the class		
 		$CI =& get_instance();
 		if ($config !== NULL)
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 4f9eab8..9c4a184 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('./');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="./images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="./images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/active_record.html b/user_guide/database/active_record.html
index f3bde15..3b3dbf4 100644
--- a/user_guide/database/active_record.html
+++ b/user_guide/database/active_record.html
@@ -23,7 +23,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/caching.html b/user_guide/database/caching.html
index 75adfc5..1034ee9 100644
--- a/user_guide/database/caching.html
+++ b/user_guide/database/caching.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/call_function.html b/user_guide/database/call_function.html
index d60302a..1fa6d18 100644
--- a/user_guide/database/call_function.html
+++ b/user_guide/database/call_function.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/configuration.html b/user_guide/database/configuration.html
index 6b8c6b5..4ae8f70 100644
--- a/user_guide/database/configuration.html
+++ b/user_guide/database/configuration.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/connecting.html b/user_guide/database/connecting.html
index 4267899..b59034f 100644
--- a/user_guide/database/connecting.html
+++ b/user_guide/database/connecting.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/examples.html b/user_guide/database/examples.html
index 55da574..966700c 100644
--- a/user_guide/database/examples.html
+++ b/user_guide/database/examples.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/fields.html b/user_guide/database/fields.html
index 4137eb9..bc5bf49 100644
--- a/user_guide/database/fields.html
+++ b/user_guide/database/fields.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/forge.html b/user_guide/database/forge.html
index bc67436..097d396 100644
--- a/user_guide/database/forge.html
+++ b/user_guide/database/forge.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/helpers.html b/user_guide/database/helpers.html
index 5e06da2..e1dbef4 100644
--- a/user_guide/database/helpers.html
+++ b/user_guide/database/helpers.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/index.html b/user_guide/database/index.html
index 5dcea98..36e6ffd 100644
--- a/user_guide/database/index.html
+++ b/user_guide/database/index.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/queries.html b/user_guide/database/queries.html
index c6306cc..bad2df8 100644
--- a/user_guide/database/queries.html
+++ b/user_guide/database/queries.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/results.html b/user_guide/database/results.html
index 2361e87..782cecc 100644
--- a/user_guide/database/results.html
+++ b/user_guide/database/results.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/table_data.html b/user_guide/database/table_data.html
index 4bb000b..4e6c97b 100644
--- a/user_guide/database/table_data.html
+++ b/user_guide/database/table_data.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/transactions.html b/user_guide/database/transactions.html
index 40630b9..96570d3 100644
--- a/user_guide/database/transactions.html
+++ b/user_guide/database/transactions.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/database/utilities.html b/user_guide/database/utilities.html
index 02cd630..4d04a1c 100644
--- a/user_guide/database/utilities.html
+++ b/user_guide/database/utilities.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/doc_style/index.html b/user_guide/doc_style/index.html
index 3854efb..3e44f30 100644
--- a/user_guide/doc_style/index.html
+++ b/user_guide/doc_style/index.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/alternative_php.html b/user_guide/general/alternative_php.html
index ee6dedc..0277401 100644
--- a/user_guide/general/alternative_php.html
+++ b/user_guide/general/alternative_php.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/ancillary_classes.html b/user_guide/general/ancillary_classes.html
index 2ad7e78..3014d3f 100644
--- a/user_guide/general/ancillary_classes.html
+++ b/user_guide/general/ancillary_classes.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/autoloader.html b/user_guide/general/autoloader.html
index c1c29da..0f8a2d4 100644
--- a/user_guide/general/autoloader.html
+++ b/user_guide/general/autoloader.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/caching.html b/user_guide/general/caching.html
index 9cc4ba5..4913cea 100644
--- a/user_guide/general/caching.html
+++ b/user_guide/general/caching.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/common_functions.html b/user_guide/general/common_functions.html
index b82b9a2..9261600 100644
--- a/user_guide/general/common_functions.html
+++ b/user_guide/general/common_functions.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/general/controllers.html b/user_guide/general/controllers.html
index c49ca11..31ad866 100644
--- a/user_guide/general/controllers.html
+++ b/user_guide/general/controllers.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
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diff --git a/user_guide/helpers/directory_helper.html b/user_guide/helpers/directory_helper.html
index b89e8c8..9744429 100644
--- a/user_guide/helpers/directory_helper.html
+++ b/user_guide/helpers/directory_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/helpers/download_helper.html b/user_guide/helpers/download_helper.html
index 11eb451..42e8aba 100644
--- a/user_guide/helpers/download_helper.html
+++ b/user_guide/helpers/download_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/helpers/email_helper.html b/user_guide/helpers/email_helper.html
index 74f6a3a..d8e522a 100644
--- a/user_guide/helpers/email_helper.html
+++ b/user_guide/helpers/email_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/helpers/file_helper.html b/user_guide/helpers/file_helper.html
index b16cde5..05700ae 100644
--- a/user_guide/helpers/file_helper.html
+++ b/user_guide/helpers/file_helper.html
@@ -23,7 +23,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/helpers/form_helper.html b/user_guide/helpers/form_helper.html
index 839f725..76ded1e 100644
--- a/user_guide/helpers/form_helper.html
+++ b/user_guide/helpers/form_helper.html
@@ -24,7 +24,7 @@
 
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 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
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diff --git a/user_guide/helpers/html_helper.html b/user_guide/helpers/html_helper.html
index 6289840..aff896a 100644
--- a/user_guide/helpers/html_helper.html
+++ b/user_guide/helpers/html_helper.html
@@ -24,7 +24,7 @@
 
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 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/inflector_helper.html b/user_guide/helpers/inflector_helper.html
index 4b06140..4a78287 100644
--- a/user_guide/helpers/inflector_helper.html
+++ b/user_guide/helpers/inflector_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/language_helper.html b/user_guide/helpers/language_helper.html
index 53a6114..7bf1068 100644
--- a/user_guide/helpers/language_helper.html
+++ b/user_guide/helpers/language_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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 <tr>
diff --git a/user_guide/helpers/number_helper.html b/user_guide/helpers/number_helper.html
index 929c968..8d20cca 100644
--- a/user_guide/helpers/number_helper.html
+++ b/user_guide/helpers/number_helper.html
@@ -24,7 +24,7 @@
 
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 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/path_helper.html b/user_guide/helpers/path_helper.html
index 6de4a46..ceb509c 100644
--- a/user_guide/helpers/path_helper.html
+++ b/user_guide/helpers/path_helper.html
@@ -23,7 +23,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/security_helper.html b/user_guide/helpers/security_helper.html
index d56f7db..627d9f9 100644
--- a/user_guide/helpers/security_helper.html
+++ b/user_guide/helpers/security_helper.html
@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/smiley_helper.html b/user_guide/helpers/smiley_helper.html
index fa7bc24..fd337c5 100644
--- a/user_guide/helpers/smiley_helper.html
+++ b/user_guide/helpers/smiley_helper.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/string_helper.html b/user_guide/helpers/string_helper.html
index 24a0a66..2a754a9 100644
--- a/user_guide/helpers/string_helper.html
+++ b/user_guide/helpers/string_helper.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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diff --git a/user_guide/helpers/text_helper.html b/user_guide/helpers/text_helper.html
index be189ef..fb58b83 100644
--- a/user_guide/helpers/text_helper.html
+++ b/user_guide/helpers/text_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
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diff --git a/user_guide/helpers/typography_helper.html b/user_guide/helpers/typography_helper.html
index 3865610..3116c36 100644
--- a/user_guide/helpers/typography_helper.html
+++ b/user_guide/helpers/typography_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
 <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
 <tr>
diff --git a/user_guide/helpers/url_helper.html b/user_guide/helpers/url_helper.html
index c26bbcb..95599a5 100644
--- a/user_guide/helpers/url_helper.html
+++ b/user_guide/helpers/url_helper.html
@@ -23,7 +23,7 @@
 
 <!-- START NAVIGATION -->
 <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/helpers/xml_helper.html b/user_guide/helpers/xml_helper.html
index 376dc24..2d3cd44 100644
--- a/user_guide/helpers/xml_helper.html
+++ b/user_guide/helpers/xml_helper.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/index.html b/user_guide/index.html
index 2fb0681..2d08fcc 100644
--- a/user_guide/index.html
+++ b/user_guide/index.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/downloads.html b/user_guide/installation/downloads.html
index 470377e..f1ac573 100644
--- a/user_guide/installation/downloads.html
+++ b/user_guide/installation/downloads.html
@@ -24,7 +24,7 @@
 
 <!-- START NAVIGATION -->
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/index.html b/user_guide/installation/index.html
index 25953d9..a4a39f5 100644
--- a/user_guide/installation/index.html
+++ b/user_guide/installation/index.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
 <div id="masthead">
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diff --git a/user_guide/installation/troubleshooting.html b/user_guide/installation/troubleshooting.html
index 62c7548..c6d7758 100644
--- a/user_guide/installation/troubleshooting.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_120.html b/user_guide/installation/upgrade_120.html
index 7671701..0ed75c7 100644
--- a/user_guide/installation/upgrade_120.html
+++ b/user_guide/installation/upgrade_120.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_130.html b/user_guide/installation/upgrade_130.html
index fa78012..db830e2 100644
--- a/user_guide/installation/upgrade_130.html
+++ b/user_guide/installation/upgrade_130.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_131.html b/user_guide/installation/upgrade_131.html
index fc71b57..2232e2f 100644
--- a/user_guide/installation/upgrade_131.html
+++ b/user_guide/installation/upgrade_131.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_132.html b/user_guide/installation/upgrade_132.html
index 907d3e1..f5259ef 100644
--- a/user_guide/installation/upgrade_132.html
+++ b/user_guide/installation/upgrade_132.html
@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_133.html b/user_guide/installation/upgrade_133.html
index a37a2df..f2bc4b8 100644
--- a/user_guide/installation/upgrade_133.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_140.html b/user_guide/installation/upgrade_140.html
index daff5cd..c8c0141 100644
--- a/user_guide/installation/upgrade_140.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_141.html b/user_guide/installation/upgrade_141.html
index 3ce4520..65b9c42 100644
--- a/user_guide/installation/upgrade_141.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_150.html b/user_guide/installation/upgrade_150.html
index 578241f..7bdcff0 100644
--- a/user_guide/installation/upgrade_150.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_152.html b/user_guide/installation/upgrade_152.html
index 09196f4..725e7a1 100644
--- a/user_guide/installation/upgrade_152.html
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_153.html b/user_guide/installation/upgrade_153.html
index 2ce0e9b..26241ec 100644
--- a/user_guide/installation/upgrade_153.html
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_154.html b/user_guide/installation/upgrade_154.html
index 01389f3..e10511a 100644
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_160.html b/user_guide/installation/upgrade_160.html
index b80a688..d5f1cc9 100644
--- a/user_guide/installation/upgrade_160.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_161.html b/user_guide/installation/upgrade_161.html
index 632d8c7..14d5122 100644
--- a/user_guide/installation/upgrade_161.html
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_162.html b/user_guide/installation/upgrade_162.html
index 6c03574..fa50c62 100644
--- a/user_guide/installation/upgrade_162.html
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_163.html b/user_guide/installation/upgrade_163.html
index 0449d52..31b309d 100644
--- a/user_guide/installation/upgrade_163.html
+++ b/user_guide/installation/upgrade_163.html
@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_164.html b/user_guide/installation/upgrade_164.html
index a953e1c..e71a0ad 100644
--- a/user_guide/installation/upgrade_164.html
+++ b/user_guide/installation/upgrade_164.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrade_b11.html b/user_guide/installation/upgrade_b11.html
index b1ed6ba..c81b6d4 100644
--- a/user_guide/installation/upgrade_b11.html
+++ b/user_guide/installation/upgrade_b11.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/installation/upgrading.html b/user_guide/installation/upgrading.html
index 9b745d1..82215f3 100644
--- a/user_guide/installation/upgrading.html
+++ b/user_guide/installation/upgrading.html
@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/benchmark.html b/user_guide/libraries/benchmark.html
index c9f50b6..c57df73 100644
--- a/user_guide/libraries/benchmark.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/calendar.html b/user_guide/libraries/calendar.html
index 22c5567..15737f1 100644
--- a/user_guide/libraries/calendar.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/config.html b/user_guide/libraries/config.html
index e0ce202..59bc7d7 100644
--- a/user_guide/libraries/config.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/email.html b/user_guide/libraries/email.html
index c9883b9..bd0fa56 100644
--- a/user_guide/libraries/email.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/encryption.html b/user_guide/libraries/encryption.html
index 407d82f..372b1a3 100644
--- a/user_guide/libraries/encryption.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/file_uploading.html b/user_guide/libraries/file_uploading.html
index e21a677..24a7d39 100644
--- a/user_guide/libraries/file_uploading.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/ftp.html b/user_guide/libraries/ftp.html
index d67df5f..41397d3 100644
--- a/user_guide/libraries/ftp.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/image_lib.html b/user_guide/libraries/image_lib.html
index 2421c51..0c32710 100644
--- a/user_guide/libraries/image_lib.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/input.html b/user_guide/libraries/input.html
index 25749bb..a046022 100644
--- a/user_guide/libraries/input.html
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@@ -24,7 +24,7 @@
 
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-<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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diff --git a/user_guide/libraries/language.html b/user_guide/libraries/language.html
index 4d93cf9..3c376a4 100644
--- a/user_guide/libraries/language.html
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@@ -24,7 +24,7 @@
 
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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index 2cb636e..66a0912 100644
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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index 113ce20..bedb903 100644
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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index c2a69c9..4dbb790 100644
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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index 7af1681..9d3373c 100644
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+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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