I'm having a slight problem with one of the webpages for my website. Every other page seems to be displayed in IE just fine, but this one webpage won't for some reason, and I was wondering whether anyone could help me

My header code:
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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>WebWise Ltd. Customer Details</title>
<script type="text/javascript" src="functions.js">
</script>
<link rel="stylesheet" href="layout.css" type="text/css" />
<style type="text/css">
/*Here, I am overriding the style rules of the background colour of the banner CSS id selector background by using embedded CSS to change the background colour to a shade of yellow*/
#banner
{
background-color: #FFCC00;
}
/*Here, I am overriding the style rules of the background colour of the leftnav CSS id selector background by using embedded CSS to change the background colour to red*/
#leftnav
{
background-color: #FF0000;
}
/*Here, I am overriding the style rules of the background colour of the rightnav CSS id selector background by using embedded CSS to change the background colour to red*/
#rightnav
{
background-color: #FF0000;
}
</style>
<style type="text/javascript">
<!--Here, I am creating a function called Back and it simply is being used so that the Website Details page can be opened when the function is called
function Back()
{
	"self.location='catalogue.html'"
}
</style>
</head>
Any help is appreciated!