Date picker using jquery

To work with Date picker or calander of Jquery. We need to include 5 files.Following are the list of files that we need to include in the head section.
jquery.ui.all.css
jquery-1.7.2.js
jquery.ui.core.js
jquery.ui.widget.js
jquery.ui.datepicker.js
We can download files from http://jqueryui.com/download

<html>
<head>
<link rel=”stylesheet” href=”jquery.ui.all.css”>
<script src=”jquery-1.7.2.js”></script>
<script src=”jquery.ui.core.js”></script>
<script src=”jquery.ui.widget.js”></script>
<script src=”jquery.ui.datepicker.js”></script>
<script type=”text/javascript” language=”javascript”></script>
<script> $(function() { $( “#datepicker” ).datepicker(); }); </script>
</head>
<body> Date: <input id=”datepicker” type=”text”>
</body>
</html>