We are using Jquery UI version 1.7.1. We are using Datepicker control in the pop up pages \dialog windows. The month and year drop downs are not working in IE9,Firefox and Google Chrome. 

• The Datepicker control and year,month dropdown's works fine in the base page. 
• The month and year drop downs works in the pop up page (If we make modal :false).  We don't want to make modal:false

Recent change in environment

       The Datepicker month and year drop downs used to work in XP machines. Now we moved to new operating system windows 7.0. 

Question:

      How to make the month and year drop downs are to work in Pop Up\Dialog windows with Modal : true ?

Appreciate your help. Let me know if you need more information.

Thanks

Ko