I am not 100% sure where you want that cods, but i checked the code you have and it should work. maybe the place you put it is causing it.
If you want to it so all the images in the banner are click able try the following code:
HTML Code:
<!-- logo -->
<a name="top"></a>
<table border="0" width="100%" cellspacing="0" cellpadding="0">
<tr>
<a href="$vboptions[forumhome].php$session[sessionurl_q]">
<td width="373">
<img border="0" src="images/styles/christmas_2009/misc/header_christmas4_01.gif" width="373" height="130"></td>
<td background="images/styles/christmas_2009/misc/header_christmas4_02.gif">
<img border="0" src="images/styles/christmas_2009/misc/header_christmas4_02.gif" width="54" height="130"></td>
<td width="273">
<img border="0" src="images/styles/christmas_2009/misc/header_christmas4_03.gif" width="273" height="130"></td>
</a>
</tr>
</table>
<!-- /logo -->
<!-- content table -->
$spacer_open
$_phpinclude_output
$ad_location[ad_header_end]
$ad_headerEnd