[Flashcoders] flash button not working in firefox when over an iframe

I've got this problem for the last couple days and could not figure out why. The problem is when I have an iframe underneath a swf file, and any flash buttons over the iframe area not working at all. And this problem only occurs in FF. You can download the sample bug here:

[Flashcoders] flash button not working in firefox when over an iframe

I've got this problem for the last couple days and could not figure out why. The problem is when I have an iframe underneath a swf file, and any flash buttons over the iframe area not working at all. And this problem only occurs in FF. You can download the sample bug here: