jQuery Date time picker

endDateTextBox.datetimepicker({
        ampm: ampmVal,
        timeFormat: timeFormatString,
        minDate: start,

        onClose: function(dateText, inst) {
            if (startDateTextBox.val() !== '') {
                var testStartDate = startDateTextBox.datetimepicker('getDate');
                var testEndDate = endDateTextBox.datetimepicker('getDate');

                if (testStartDate > testEndDate) {
                    startDateTextBox.datetimepicker('setDate', testEndDate);
                }
            } else {
                startDateTextBox.val(dateText);
            }
        },
        onSelect: function (selectedDateTime, t){
             var end = endDateTextBox.datetimepicker('getDate');
            startDateTextBox.datetimepicker('option', 'maxDate',  end);

            if (!t.clicks) { t.clicks = 0; }

            if (++t.clicks === 2) {
                t.inline = false;
                t.clicks = 0;
            }

            setTimeout(function () {
                t.clicks = 0;
            }, 300);
        }
    });