Hi All... My web application works fine in Windows Xp. We are facing some problem in Windows 7. Here are steps that creates this problem. 1. Open my application. 2. If there are more than one IE window open, my application being one of them, any sub-window opened in my application remain on top when navigating to another IE Window. 3.To view the other IE window, my application sub-windows need to be closed. This happend where there are more than 2 windows opened. Your help in this will be very much usefull for us in fixing most irritating bug.