Ajax模式弹出窗口加载了activex控件

In a page there is an activex control as well as a button whose onclick opens an ajax modal popup. The problem i face is that whenever the button is clicked the ajax pop up loads behind the activex control and thus it is hidden.So I am not able to use that control at all. I have not found a proper solution to this. I tried a solution where a browser check condition was removed from the ajaxtoolkit code. but no luck. Am using Ajax toolkit version 3.0.30512.1.let me know if there are any solutions to resolve this problem.In a page there is an activex control as well a