how to set the show position of datepicker?

Question

dear i have a datepicker inside my form. after i click the textfield, datepicker show to up(reverse with drop down). how do i do if i want to show datepicker dropdown not dropup? http://img413.imageshack.us/img413/1460/screenshot5g.png

Answer 1

 $('.datetime').datepicker({
     dateFormat: 'm/d/yy',
     beforeShow: function (input, inst) {
         var offset = $(input).offset();
         var height = $(input).height();
         window.setTimeout(function () {
             inst.dpDiv.css({ top: (offset.top + height + 4) + 'px', left: offset.left + 'px' })
         }, 1);
     }

 });