Issue overlaying jquery-ui dialog on flash player under windows

Issue overlaying jquery-ui dialog on flash player under windows

Hi to all!
I developed a flex admin panel and I encountered the following issue:
The flex panel must open through a javascript call an overlay div ( thrugh jquery-ui dialog plugin) with ckeditor inside. The overlay must open just on the top of the flex panel(which cover the whole page) just like a pop-up would, but with the advantage the the "pop-up" is inside the html page and I can keep the communication and data exchange with flex (...cool!! )
Under Mac it works perfectly on Firefox,Safari,Chrome and Opera.
Under Windows it doesn't work at all with any browser.

At first glance I thought it could be a javascript call problem, but by placing some alerts in the function I call, I saw that the functions are called correctly both in Mac and Windows.

I tried to play with wmode="transparent" and then wmode="opaque" but it didn't work.
I also tried to play with z-index by assign to the flash object "z-index=-100" and to the overlay "z-index:100" (then I find out the jquery-ui put by default the overlay at z-index=1000) but no way.

I don't know if this is a problem of the flash players when run under windows or is an issue due to the interaction between the plugin and flash player.

Have you ever encountered a similar issue?
Thanks in advance.
Best regards