Added a copy of Firebug Lite for debugging purposes. License is uncertain but being treated as MPL. (If is is not MPL then it is under something more permissive that permits relicensing anyway)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>{#searchreplace_dlg.replace_title}</title>
<script type="text/javascript" src="../../tiny_mce_popup.js"></script>
<script type="text/javascript" src="../../utils/mctabs.js"></script>
<script type="text/javascript" src="../../utils/form_utils.js"></script>
<script type="text/javascript" src="js/searchreplace.js"></script>
<link rel="stylesheet" type="text/css" href="css/searchreplace.css" />
<base target="_self" />
</head>
<body style="display:none;">
<form onsubmit="return false;" action="#">
<div class="tabs">
<ul>
<li id="search_tab"><span><a href="javascript:SearchReplaceDialog.switchMode('search');" onmousedown="return false;">{#searchreplace.search_desc}</a></span></li>
<li id="replace_tab"><span><a href="javascript:SearchReplaceDialog.switchMode('replace');" onmousedown="return false;">{#searchreplace_dlg.replace}</a></span></li>
</ul>
</div>
<div class="panel_wrapper">
<div id="search_panel" class="panel">
<table border="0" cellspacing="0" cellpadding="2">
<tr>
<td><label for="search_panel_searchstring">{#searchreplace_dlg.findwhat}</label></td>
<td><input type="text" id="search_panel_searchstring" name="search_panel_searchstring" style="width: 200px" /></td>
</tr>
<tr>
<td colspan="2">
<table border="0" cellspacing="0" cellpadding="0" class="direction">
<tr>
<td><label>{#searchreplace_dlg.direction}</label></td>
<td><input id="search_panel_backwardsu" name="search_panel_backwards" class="radio" type="radio" /></td>
<td><label for="search_panel_backwardsu">{#searchreplace_dlg.up}</label></td>
<td><input id="search_panel_backwardsd" name="search_panel_backwards" class="radio" type="radio" checked="checked" /></td>
<td><label for="search_panel_backwardsd">{#searchreplace_dlg.down}</label></td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2">
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td><input id="search_panel_casesensitivebox" name="search_panel_casesensitivebox" class="checkbox" type="checkbox" /></td>
<td><label for="search_panel_casesensitivebox">{#searchreplace_dlg.mcase}</label></td>
</tr>
</table>
</td>
</tr>
</table>
</div>
<div id="replace_panel" class="panel">
<table border="0" cellspacing="0" cellpadding="2">
<tr>
<td><label for="replace_panel_searchstring">{#searchreplace_dlg.findwhat}</label></td>
<td><input type="text" id="replace_panel_searchstring" name="replace_panel_searchstring" style="width: 200px" /></td>
</tr>
<tr>
<td><label for="replace_panel_replacestring">{#searchreplace_dlg.replacewith}</label></td>
<td><input type="text" id="replace_panel_replacestring" name="replace_panel_replacestring" style="width: 200px" /></td>
</tr>
<tr>
<td colspan="2">
<table border="0" cellspacing="0" cellpadding="0" class="direction">
<tr>
<td><label>{#searchreplace_dlg.direction}</label></td>
<td><input id="replace_panel_backwardsu" name="replace_panel_backwards" class="radio" type="radio" /></td>
<td><label for="replace_panel_backwardsu">{#searchreplace_dlg.up}</label></td>
<td><input id="replace_panel_backwardsd" name="replace_panel_backwards" class="radio" type="radio" checked="checked" /></td>
<td><label for="replace_panel_backwardsd">{#searchreplace_dlg.down}</label></td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2">
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td><input id="replace_panel_casesensitivebox" name="replace_panel_casesensitivebox" class="checkbox" type="checkbox" /></td>
<td><label for="replace_panel_casesensitivebox">{#searchreplace_dlg.mcase}</label></td>
</tr>
</table>
</td>
</tr>
</table>
</div>
</div>
<div class="mceActionPanel">
<div style="float: left">
<input type="button" id="insert" name="insert" value="{#searchreplace_dlg.findnext}" onclick="SearchReplaceDialog.searchNext('none');" />
<input type="button" class="button" id="replaceBtn" name="replaceBtn" value="{#searchreplace_dlg.replace}" onclick="SearchReplaceDialog.searchNext('current');" />
<input type="button" class="button" id="replaceAllBtn" name="replaceAllBtn" value="{#searchreplace_dlg.replaceall}" onclick="SearchReplaceDialog.searchNext('all');" />
</div>
<div style="float: right">
<input type="button" id="cancel" name="cancel" value="{#cancel}" onclick="tinyMCEPopup.close();" />
</div>
</div>
</form>
</body>
</html>