How do I get a functioning datepicker.

...
<link rel="stylesheet" href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.js" %>"></script>
    <script type="text/javascript" src="http://code.jquery.com/ui/1.11.4/jquery-ui.js" %>"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#Text1").datepicker({ minDate: new Date(2000, 1, 1), maxDate: new Date(2025, 1, 1), dateFormat: 'mm,dd,yyyy', firstDay: 1 });
        });
    </script>
...
Date:<input id="Text1" type="text" runat="server" />

JavaScript runtime error: Object doesn't support property or method 'datepicker'