datepicker image icon not removing

datepicker image icon not removing

i've a datepicker with setting with image beside but i need to remove it dynamically.
  2. $(function() {
  3. $.datepicker.setDefaults({dateFormat: 'yy-mm-dd',
  4. showOn: "button",
  5.  buttonImage: "image/calendar.gif",
  6.  buttonImageOnly: true
  7.  
  8. });

  10. });

  1. function remove_element(element)
  2. {
  3.       element.parentNode.removeChild(element);
  4. }
only the text box is removing, the image icon still there.