Show Financial Year using JQuery Datepicker

<html>

<head>
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.8.3.js"></script>
    <link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css" />
    <script src="http://code.jquery.com/ui/1.9.1/jquery-ui.js"></script>
    <script type="text/javascript">
        $(function()
        {
            var year;
            $("#datepicker1").datepicker(
            {
                onSelect: function(dateText, inst)
                {
                    var date = $(this).datepicker('getDate'),
                        day = date.getDate(),
                        month = date.getMonth(),
                        year = date.getFullYear();
                    year1 = date.getFullYear();
                    if (month < 3)
                    {
                        yearyear = year - 1;
                        year1year1 = year1.toString().substring(2);
                    }
                    else
                    {
                        yearyear = year;
                        year1 = (year1 + 1).toString().substring(2);;
                    }
                    $("#datepicker1").val(year + '-' + year1);
                },
            });
        });
    </script>
</head>

<body>
    <input type="text" id="datepicker1" /> </body>

</html>