jQuery DatePicker set ddMMyyyy Format

  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js" type="text/javascript"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js" type="text/javascript"></script>
    <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="Stylesheet" type="text/css" />
    <script type="text/javascript">
        $(function () {
            $("[id$=txtDate]").datepicker({
                showOn: 'button',
                buttonImageOnly: true,
                buttonImage: 'http://jqueryui.com/resources/demos/datepicker/images/calendar.gif',
                dateFormat: 'dd/mm/yy'
            });
        });
    </script>
    <input type = "text" id = "txtDate" />