What happens is this...

...when the end user clicks on the button that is contained within the movie on level 1 it opens specific pop up window. This works fine.

But when the pop up opens and the image starts to appear, the main window behind goes blank! when I close the pop up the main window stays blank and bits come back in as the cursor moves around. but it doesn't all come back.

The above only happens in IE5.1 on a mac. If viewed on IE5.2 there is no problem.

"Well, view it on IE5.2" I hear you say. I would but the client is on 5.1 and is not happy with end result. As they can view other sites where the main window doesn't lose the swf!!!!

What to do?????