What version of FF do you have and what extensions? I've got 2.0.0.11 and the C&C3 page seems to render fine for me.
Use IE for those 2 pages?
The pathetic thing is, IE doesn't conform to web standards for page rendering. Some web designers, rather than coding for the web standards, code so it will work with IE's POS page renderer and therefore it won't function properly in FF.
There are a few pages I have to use IE for; well not IE itself, I got IETab for FF so I don't have to open IE7 because that program is such a crapfest. Whoever designed the interface for IE7 should be fired. Along with all the testers and whoever approved it to be released to market. Most backward-ass interface of the web...