As you dont provide a link to your site so we can better answer that question, my best guess right now is in this area of the code.
Code:
<td width="62"><img src="$stylevar[imgdir_misc]/header_stats_right.gif" alt="" width="63" height="103"></td>
<td background="$stylevar[imgdir_misc]/header_bg.gif"><div align="right"><a href="index.php"><img src="$stylevar[imgdir_misc]/header_right.gif" alt="" width="401" height="103" border="0"></a></div></td>