wierd problem with simple example

wierd problem with simple example

hi,
Ok, so I'm at the end of my wits trying out what the problem is with
this code: The progress bar just doesn't show!!
<%@ Page Language="C#" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="AjaxPlayground._Default" %>
<!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 runat="server">
<title></title>
    <script type="text/javascript" src="jquery-1.3.2.js"></script>
    <script type="text/javascript" src="jquery-ui-1.7.2.custom.min.js"></
script>
    <script type="text/javascript">
     $(function() {
     $("#progressBar").progressbar({
     value: 40
     });
     });
    </script>
</head>
<body>
<form id="form1" runat="server">
<br />
<br />
</form>
<div id="progressBar"></div>
</body>
</html>
Thanks
Gideon
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