Silverlight buttons are not working inside an IFrame in firefox 3.6

Silverlight control was hosted on a page, and the page was being called in an IFrame in another application. In this case, the hyperlinks and buttons in Silverlight area inside IFrame was not working in firefox 3.6 although it was working fine in Internet Explorer,

simply changed the windowless property of Object tag to false, and the hyperlinks and buttons in Silverlight inside IFrame will working properly.