It's not quite the same thing, but I think form boxes are stronger. It's a CSS issue really, but we ran into the same problem when our menus, styled divs, would drop down "behind" the flash regardless of z-index.
I'd refer you to the CSS board, but as that just means I'd have to meet you over there...
You need to line up your elements 1, 2, 3. You'll have the drop downs and the flash needs to come after them in code. In between them, in the HTML of the webpage you need this div
You can name the class whatever you want of course. Then in your stylesheet, insert...
At least that's how we got ours working cross browser. IE, FF, Opera, even Safari. I don't believe the wmode on the flash swf really made much difference in the end, but fyi ours is set to transparent currently and we are NOT experimenting with it further. ;)
Hope that helps.
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