Pherelas if Firefox shows it wrong then sorry to say mate it's you that has it wrong, IE has always been the bane of web developers lives. Firefox and Opera are the most standard compliant browsers available and I have a link for you:
http://validator.w3.org
http://jigsaw.w3.org/css-validator/
Not to mention the addons such as the Web Developer toolbar as well as HTML validators and cleanup tools. No web developer would ever admit that IE is better than Firefox, it just doesn't happen. :oook: :p ;)
Example being the problem in this thread, Opera and Firefox show up fine as it is but for IE even IE7 I have to use some code that only IE can see in order to use different settings to make it work like it should have.