added email helper
diff --git a/system/helpers/email_helper.php b/system/helpers/email_helper.php
new file mode 100644
index 0000000..3729e04
--- /dev/null
+++ b/system/helpers/email_helper.php
@@ -0,0 +1,54 @@
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

+/**

+ * CodeIgniter

+ *

+ * An open source application development framework for PHP 4.3.2 or newer

+ *

+ * @package		CodeIgniter

+ * @author		ExpressionEngine Dev Team

+ * @copyright	Copyright (c) 2006, EllisLab, Inc.

+ * @license		http://www.codeigniter.com/user_guide/license.html

+ * @link		http://www.codeigniter.com

+ * @since		Version 1.0

+ * @filesource

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * CodeIgniter Email Helpers

+ *

+ * @package		CodeIgniter

+ * @subpackage	Helpers

+ * @category	Helpers

+ * @author		ExpressionEngine Dev Team

+ * @link		http://www.codeigniter.com/user_guide/helpers/email_helper.html

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * Validate email address

+ *

+ * @access	public

+ * @return	bool

+ */	

+function valid_email($address)

+{

+	return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $address)) ? FALSE : TRUE;

+}

+

+// ------------------------------------------------------------------------

+

+/**

+ * Send an email

+ *

+ * @access	public

+ * @return	bool

+ */	

+function send_email($recipient, $subject = 'Test email', $message = 'Hello World')

+{

+	return mail($recipient, $subject, $message);

+}

+

+?>
\ No newline at end of file
diff --git a/user_guide/helpers/download_helper.html b/user_guide/helpers/download_helper.html
index ff9bd2e..a82d198 100644
--- a/user_guide/helpers/download_helper.html
+++ b/user_guide/helpers/download_helper.html
@@ -104,8 +104,7 @@
 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

-Next Topic:&nbsp;&nbsp;<a href="file_helper.html">File Helper</a>

-</p>

+Next Topic:&nbsp;&nbsp;<a href="email_helper.html">Email Helper</a></p>

 <p><a href="http://www.codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>

 </div>

 

diff --git a/user_guide/helpers/email_helper.html b/user_guide/helpers/email_helper.html
new file mode 100644
index 0000000..fe0e3cc
--- /dev/null
+++ b/user_guide/helpers/email_helper.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

+<html>

+<head>

+

+<title>CodeIgniter User Guide : Download Helper</title>

+

+<style type='text/css' media='all'>@import url('../userguide.css');</style>

+<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />

+

+<script type="text/javascript" src="../nav/nav.js"></script>

+<script type="text/javascript" src="../nav/prototype.lite.js"></script>

+<script type="text/javascript" src="../nav/moo.fx.js"></script>

+<script type="text/javascript" src="../nav/user_guide_menu.js"></script>

+

+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

+<meta http-equiv='expires' content='-1' />

+<meta http-equiv= 'pragma' content='no-cache' />

+<meta name='robots' content='all' />

+<meta name='author' content='ExpressionEngine Dev Team' />

+<meta name='description' content='CodeIgniter User Guide' />

+

+</head>

+<body>

+

+<!-- 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="masthead">

+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">

+<tr>

+<td><h1>CodeIgniter User Guide Version 1.6.0</h1></td>

+<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>

+</tr>

+</table>

+</div>

+<!-- END NAVIGATION -->

+

+

+<!-- START BREADCRUMB -->

+

+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">

+<tr>

+<td id="breadcrumb">

+<a href="http://www.codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;

+<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;

+Download Helper

+</td>

+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>

+</tr>

+</table>

+<!-- END BREADCRUMB -->

+

+<br clear="all" />

+

+

+<!-- START CONTENT -->

+<div id="content">

+

+

+<h1>Download Helper</h1>

+

+<p>The Download Helper lets you download data to your desktop.</p>

+

+

+<h2>Loading this Helper</h2>

+

+<p>This helper is loaded using the following code:</p>

+<code>$this->load->helper(email);</code>

+

+<p>The following functions are available:</p>

+

+<h2>valid_email('<var>email</var>')</h2>

+

+<p>Checks if an email is a correctly formatted email. Note that is doesn't actually prove the email will recieve mail, simply that it is a validly formed address.</p>

+<p>It returns TRUE/FALSE</p>

+<code> $this-&gt;load-&gt;helper(email);<br />

+<br />

+if (valid_email('email@somesite.com'))<br />

+{<br />

+&nbsp;&nbsp;&nbsp;&nbsp;echo 'email is valid';<br />

+}<br />

+else<br />

+{<br />

+&nbsp;&nbsp;&nbsp;&nbsp;echo 'email is not valid';<br />

+}</code>

+<h2>send_email('<var>recipient</var>', '<var>subject</var>', '<var>message</var>')</h2>

+<p>Sends an email using PHP's native <a href="http://www.php.net/function.mail">mail()</a> function. For a more robust email solution, see CodeIgniter's <a href="../libraries/email.html">Email Class</a>.</p>

+</div>

+<!-- END CONTENT -->

+

+

+<div id="footer">

+<p>

+Previous Topic:&nbsp;&nbsp;<a href="download_helper.html">Download Helper</a>

+&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+Next Topic:&nbsp;&nbsp;<a href="file_helper.html">File Helper</a></p>

+<p><a href="http://www.codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>

+</div>

+

+</body>

+</html>
\ No newline at end of file
diff --git a/user_guide/helpers/file_helper.html b/user_guide/helpers/file_helper.html
index 29a8594..d2d61ad 100644
--- a/user_guide/helpers/file_helper.html
+++ b/user_guide/helpers/file_helper.html
@@ -136,12 +136,11 @@
 

 <div id="footer">

 <p>

-Previous Topic:&nbsp;&nbsp;<a href="directory_helper.html">Directory Helper</a>

+Previous Topic:&nbsp;&nbsp;<a href="email_helper.html">Email Helper</a>

 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

-Next Topic:&nbsp;&nbsp;<a href="form_helper.html">Form Helper</a>

-</p>

+Next Topic:&nbsp;&nbsp;<a href="form_helper.html">Form Helper</a></p>

 <p><a href="http://www.codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>

 </div>

 

diff --git a/user_guide/nav/nav.js b/user_guide/nav/nav.js
index ef484f6..951c190 100644
--- a/user_guide/nav/nav.js
+++ b/user_guide/nav/nav.js
@@ -102,6 +102,7 @@
 		'<li><a href="'+base+'helpers/date_helper.html">Date Helper</a></li>' +

 		'<li><a href="'+base+'helpers/directory_helper.html">Directory Helper</a></li>' +

 		'<li><a href="'+base+'helpers/download_helper.html">Download Helper</a></li>' +

+		'<li><a href="'+base+'helpers/email_helper.html">Email Helper</a></li>' +

 		'<li><a href="'+base+'helpers/file_helper.html">File Helper</a></li>' +

 		'<li><a href="'+base+'helpers/form_helper.html">Form Helper</a></li>' +

 		'<li><a href="'+base+'helpers/html_helper.html">HTML Helper</a></li>' +

diff --git a/user_guide/toc.html b/user_guide/toc.html
index 3c6b827..465d8f4 100644
--- a/user_guide/toc.html
+++ b/user_guide/toc.html
@@ -158,6 +158,7 @@
 <li><a href="./helpers/date_helper.html">Date Helper</a></li>

 <li><a href="./helpers/directory_helper.html">Directory Helper</a></li>

 <li><a href="./helpers/download_helper.html">Download Helper</a></li>

+<li><a href="./helpers/email_helper.html">Email Helper</a></li>

 <li><a href="./helpers/file_helper.html">File Helper</a></li>

 <li><a href="./helpers/form_helper.html">Form Helper</a></li>

 <li><a href="./helpers/html_helper.html">HTML Helper</a></li>