Datepicker date ranges with alt date to pass to controller

<script type="text/javascript">      
    j$ = jQuery.noConflict();       
    j$(document).ready(function() {
        j$( "#visaExpirationDate" ).datepicker({
            yearRange: "c:+10",//today plus 10 years
            //yearRange: "-25:c",//today minus 25 years
            changeMonth: true,
            changeYear: true,
            numberOfMonths: 1,
            dateFormat:"mm-dd-yy",
            altField: "#visaExpirationDate_alternate",
            altFormat: "yy-mm-dd",
            showAnim: "slide"
        })
    });                     
</script>