FF3/Windows CSS z-index problem with YouTube player

Question

I\'m stuck on what appears to be a CSS/z-index conflict with the YouTube player. In Firefox 3 under Windows XP, Take a look at this page: http://spokenword.org/program/21396

Answer 1

I've noticed that wmode="opaque" terribly affects on usage of CPU. Chrome make on my notebook 50% CPU usage (without opaque ~8%).
So be careful with this option.