Now using a CSS hack for IE's "filter" attribute to prevent CSS warnings in Firefox
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>{$lang_about_title}</title>
<script language="javascript" type="text/javascript" src="../../tiny_mce_popup.js"></script>
<script language="javascript" type="text/javascript" src="../../utils/mctabs.js"></script>
<script language="javascript" type="text/javascript" src="jscripts/about.js"></script>
<base target="_self" />
</head>
<body id="about" onload="tinyMCEPopup.executeOnLoad('init();');" style="display: none">
<div class="tabs">
<ul>
<li id="general_tab" class="current"><span><a href="javascript:mcTabs.displayTab('general_tab','general_panel');" onmousedown="return false;">{$lang_about}</a></span></li>
<li id="help_tab"><span><a href="javascript:mcTabs.displayTab('help_tab','help_panel');" onmousedown="return false;">{$lang_help}</a></span></li>
<li id="plugins_tab"><span><a href="javascript:mcTabs.displayTab('plugins_tab','plugins_panel');" onmousedown="return false;">{$lang_plugins}</a></span></li>
</ul>
</div>
<div class="panel_wrapper">
<div id="general_panel" class="panel current">
<h3>{$lang_about_title}</h3>
<p>Version: {$tinymce_version} ({$tinymce_releasedate})</p>
<p>TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor control released as Open Source under <a href="../../license.txt" target="_blank">LGPL</a>
by Moxiecode Systems AB. It has the ability to convert HTML TEXTAREA fields or other HTML elements to editor instances.</p>
<p>Copyright © 2003-2007, <a href="http://www.moxiecode.com" target="_blank">Moxiecode Systems AB</a>, All rights reserved.</p>
<p>For more information about this software visit the <a href="http://tinymce.moxiecode.com" target="_blank">TinyMCE website</a>.</p>
<div id="buttoncontainer"></div>
</div>
<div id="plugins_panel" class="panel">
<div id="pluginscontainer">
<h3>{$lang_loaded_plugins}</h3>
<div id="plugintablecontainer">
</div>
<p> </p>
</div>
</div>
<div id="help_panel" class="panel noscroll" style="overflow: visible;">
<div id="iframecontainer"></div>
</div>
</div>
<div class="mceActionPanel">
<div style="float: right">
<input type="button" id="cancel" name="cancel" value="{$lang_close}" onclick="tinyMCEPopup.close();" />
</div>
</div>
</body>
</html>