Hello

i have WHMCS Scripts & i'm trying to add a java+css menu in the header
this is the menu
http://www.dynamicdrive.com/style/cs...el_css_menu_2/

i have put the html in <body> area and it's seems every thing ok except when i put the Css code in the <head> like this
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="rtl">
<head>
<base href="{$systemurl}" />
<link rel="stylesheet" type="text/css" href="templates/{$template}/style.css" />
<link rel="stylesheet" type="text/css" href="templates/{$template}/jqueryslidemenu.css" />

<!--[if lte IE 7]--!>
<style type="text/css">
html .jqueryslidemenu{height: 1%;} /*Holly Hack for IE7 and below*/
</style>
<![endif]-->

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script type="text/javascript" src="templates/{$template}/jqueryslidemenu.js"></script>

<meta http-equiv="content-type" content="text/html; charset={$charset}" />
<title>{$companyname} - {$pagetitle}{if $kbarticle.title} - {$kbarticle.title}{/if}</title>
</head>
it's give me a white page

how can i fix that ?