Need Help with header code

[The slime]

this is driving me mad. when I move my browser my forum falls apart . here is my header code

<div id="border-left"><div id="border-right">
<!-- logo -->
<div id="header"><img src="images/z/misc/header_right.gif" class="fright" alt="" /><a href="$vboptions[forumhome].php$session[sessionurl_q]"><img src="$stylevar[titleimage]" border="0" alt="$vboptions[bbtitle]" /></a></div>
<!-- /logo -->

<div id="content-pad">

<!-- content table -->

$_phpinclude_output

what am I doing wrong URL http://www.backdoor.bz