Let me try again.

1) 10s of thousands of sites use the *exact same code*.
2) It has rendered flawlessly on 5 different browers on 3 different operating systems that I personally tried.
3) Garrett claims that it renders correctly on a machine that he is running elsewhere.

I don't know what's going on with your Mozilla, or what version you're using. But it would seem to me that it should be able to display the exact same code that millions view with no problem every single day.