Así es, como Ryuuseiken dijo, tienes que dejarlo así:
Código:
<html>
<head>
<title>{$thread['subject']}</title>
{$headerinclude}
<script type="text/javascript">
<!--
var quickdelete_confirm = "{$lang->quickdelete_confirm}";
// -->
</script>
<script type="text/javascript" src="jscripts/thread.js?ver=1600"></script>
</head>
<body>
{$header}
{$pollbox}
<table border="0" cellspacing="1" cellpadding="4" class="tborder" style="clear: both;">
<tbody><tr>
<td colspan="6" align="center" class="thead"><strong>{$thread['threadprefix']}{$thread['subject']} </strong></td>
</tr>
<tr>
<td colspan="6" class="tcat smalltext">
<div style="float: right;">
<span class="smalltext"><strong><a href="{$next_oldest_link}">{$lang->next_oldest}</a> | <a href="{$next_newest_link}">{$lang->next_newest}</a> </strong></span>
</div>
<div>
<!-- start: showthread_usersbrowsing -->
{$usersbrowsing}
<!-- end: showthread_usersbrowsing -->
</div>
</td>
</tr>
<tr>
<td width="20" class="trow1">
<center><span class="smalltext"><strong><img src="http://server2.iconfinder.com/data/icons/fugue/icon/eye.png"><font color="#636363"> Visitas: {$thread['views']}</font></strong></span></center>
</td>
<td width="20" class="trow1">
<center><span class="smalltext"><strong><img src="http://server2.iconfinder.com/data/icons/fugue/icon/mail.png"><font color="#636363"> Mensajes: <a href="javascript:MyBB.whoPosted({$thread['tid']});">{$thread['replies']}</a></font></strong></span></center>
</td>
<td width="80" class="trow1" align="center" class="{$bgcolor}{$thread_type_class}"><a href="http://twitter.com/?status=Check+Out {$mybb->settings['bburl']}/{$thread['threadlink']}" target="_blank" title=""><img src="images/tw.png" alt="" style="vertical-align: middle;" /></a> <a href="http://www.facebook.com/share.php?u={$mybb->settings['bburl']}/{$thread['threadlink']}&t={$thread['subject']}" target="_blank" title=""><img src="images/fb.png" alt="" style="vertical-align: middle;" /></a></td>
<td width="50" class="trow1"><!-- start: showthread_ratethread -->
{$ratethread}
<!-- end: showthread_ratethread --></td>
<td width="50" class="trow1" align="center"><div style="margin: 4px 0px;"><!-- start: showthread_newreply -->
{$newreply}
<!-- end: showthread_newreply --></div></td>
</tr>
<tr>
<td colspan="6" class="tfoot"> </td>
</tr>
</tbody></table>
<br />
<div id="posts" style="margin: 0px 15px;">
{$posts}
</div>
<br />
<table border="0" cellspacing="{$theme['borderwidth']}" cellpadding="{$theme['tablespace']}" class="tborder">
<tr>
<td colspan="2" class="thead">
{$search_thread}
<div style="margin-top: 2px;">
<strong>« <a href="{$next_oldest_link}">{$lang->next_oldest}</a> | <a href="{$next_newest_link}">{$lang->next_newest}</a> »</strong>
</div>
</td>
</tr>
<tr>
<td class="trow1">
<div style="float: right; margin: 4px 0px;">
{$newreply}
</div>
<div>
{$multipage}
</div>
</td>
</tr>
<tr>
<td class="tfoot"> </td>
</tr>
</table>
{$sharebuttons}
{$quickreply}
{$threadexbox}
{$similarthreads}
<br />
<div class="float_right" style="text-align: right;">
{$moderationoptions}
{$forumjump}
</div>
<br style="clear: both;" />
{$footer}
</body>
</html>