function CalculateAge(dateofbirth) {

    function CalculateAge() {

        var today = new Date();

        if (!$("#dateofbirth").datepicker( 'getDate' )) {

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

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

            return 1;

        var nowyear = today.getFullYear();

        }

        var nowmonth = today.getMonth();

        var nowday = today.getDate();

        var birthyear = dob.getFullYear();

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

        var birthmonth = dob.getMonth();

        var birthday = dob.getDate();

        var year = nowyear - birthyear;

        var year = dob.getFullYear();

        var month = nowmonth - birthmonth;

        var month = dob.getMonth();

        var day = nowday - birthday;

        var day = dob.getDate();

        if(day < 0) {

        $.ajax({

            month = parseInt(month) -1;

            url : '/cgi-bin/koha/svc/members/age',

        }

            type : 'GET',

            data: 'dateofbirth=' + year + '-' + month + '-' + day,

            dataType: 'json',

            success : function(json, statut){

                var age_string = "Age: ";

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

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

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

            },

        });