Help with datepicker

Help with datepicker

What's wrong with my 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>Untitled Document</title>
<link type="text/css" href="css/flick/jquery-ui-1.8.custom.css" rel="Stylesheet" />
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.custom.min.js"></script>

<script type="text/javascript">
            $(function(){ 
            $('#date').datepicker(); 
            }); 
</script>

</head>

<body>

Datepicker: <input type="text" name="date" id="date"/>
    
</body>
</html>


It will only display Datepicker: and a text box. When I click the text box, the calendar won't appear. How can I make the calendar appear when I click the text box?

If followed the instructions here:  http://jqueryui.com/docs/Getting_Started