you have a lot of stuff going on on that page that I didn't want to weed through but try this out and see if you can work with it:
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>2-column boxes</title>
<style type="text/css">
#list_container {
width: 500px;
border: 2px solid #000;
padding: 0;
margin: 0;
}
#list_container ul, li {
padding: 0;
margin: 0;
list-style: none;
}
#list_container ul {
width: 200px;
}
#list_container li {
width: 180px;
height: 180px;
border: 1px solid #66f;
display: block;
}
ul.left{
float: left;
}
ul.right {
float: right;
}
ul.left li {
float: left;
clear: left;
}
ul.right li {
float: right;
clear: right;
}
#list_container .foot {
clear: both;
width: 100%;
height: 0px;
}
* html #list_container .foot {
margin-top: -20px;
}
</style>
</head>
<body>
<div id="list_container">
<ul class="left">
<li></li>
<li></li>
<li></li>
</ul>
<ul class="right">
<li></li>
<li></li>
</ul>
<div class="foot">
</div>
</body>
</html>
Edit: fixed an IE bug