Updateprogress with Firefox3   

I am having problems with animated gifs showing into ajax updateprogress 
panels. IE 7 shows them correctly, but Firefox 3.0.1 shows no animation, 
just the first frame.

I've tried myself with a simple javascript function showing a hidden div, 
and the image inside is still stuck with firefox.

Any idea?

date: Sun, 31 Aug 2008 18:57:19 +0200   author:   Max mm