function CalculateAge(dateofbirth) {

        var today = new Date();

        var dob = new Date($("#dateofbirth").datepicker( 'getDate' ));

        var nowyear = today.getFullYear();

        var nowmonth = today.getMonth();

        var nowday = today.getDate();

        var birthyear = dob.getFullYear();

        var birthmonth = dob.getMonth();

        var birthday = dob.getDate();

        var year = nowyear - birthyear;

        var month = nowmonth - birthmonth;

        var day = nowday - birthday;

        if(day < 0) {

            month = parseInt(month) -1;

        }

        if(month < 0) {

            year = parseInt(year) -1;

            month = 12 + month;

        }

        var age_string = "Age: ";

        if (year) { age_string += year + " year(s) "; }

        if (month) { age_string += month + " month(s) "; }

        var elem = $("#dateofbirth").siblings(".hint").first().html(age_string);

    }