title: jquery UI datepicker: display the day number only
body: <p>Is it possible to display the day number only? (I don't need the full date).</p>
  
  <p>I try: <code>$('.date').datepicker({dateFormat: 'dd'});</code>
  But I still see the full date displayed (e.g. 16-6-13 instead of 16)</p>
  
  <p>there is a way to change it? maybe a kind of known hack...</p>