Show last posts in the forum homepage

[Combattente]

<if condition="$vbulletin->options['externaljs']">
<!-- show latest active threads -->
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" 
align="center">
<tbody>
<tr>
<td class="thead" colspan="2">
<a style="float:$stylevar[right]" href="#top" onclick="return toggle_collapse('forumhome_external')"><img 
id="collapseimg_forumhome_external" 
src="$stylevar[imgdir_button]/collapse_thead$vbcollapse[collapseimg_forumhome_external].gif" alt="" border="0" /></a>
<a href="search.php?$session[sessionurl]do=getnew">Latest Active Threads</a>
</td>
</tr>
</tbody>
<tbody id="collapseobj_forumhome_external" style="$vbcollapse[collapseobj_forumhome_external]">
<tr>
 
<td class="alt1" width="100%">
 
<div class="smallfont">
<script type="text/javascript" src="external.php?type=js"></script> 
<script language="" type="text/javascript">
<!--
for (var x in threads)
{
document.writeln("<img class=\"inlineimg\" src=\"$stylevar[imgdir_button]/lastpost.gif\" alt=\"\" border=\"0\" /> <a href=\"showthread.php?t="+threads[x].threadid+"\">"+threads[x].title+"</a> <span class=\"time\">($vbphrase[posted_by]: "+threads[x].poster+")</span><br />");
}
//-->
</script></div>
 
</td>
</tr>
</tbody>
<!-- show latest active threads -->
</table>
<br />
</if>

This is what I have, but it's for a previous version. I have vBulletin 4.0.2. How can I make it work there?