Mac Firefox Flash Height & Font Sizing Issues

I have a G5 Mac OS X 10.4.11, running Firefox 3.5.5. In my Firefox, a website I designed, http://www.mountainhightree.com , has flash elements that display incorrectly. The top flash menu is cut off on both ends, and the main flash piece also gets cut off on the top and bottom. I've checked it in Safari on this computer and it displays fine.

It also displays correctly on my PC laptop and Macbook pro laptop running 10.6.1 in the same version of Firefox. Does anyone else see the issues? Any ideas on why this is occurring? See my screenshots to view. I'm wondering if it's just my G5.

Thanks!