Datepicker not working in FireFox, but works in IE9, Chrome, Win:Safari, Opera

Datepicker not working in FireFox, but works in IE9, Chrome, Win:Safari, Opera

I cannot get datepicker to work in firefox.  I am able to get it to work in all the other major browsers just fine with the following code

Thanks for any help you can give me.
  2.  <script>
  3.        $(function(){
  4.             $('.datepicker').datepicker({showAnim: "blind"});
  5.         });
  6.  </script>
  7.