Annoying IE6. Black screen with "loading" when youtube is added

I have had this problem for quite some time. It wasn't actually a big issue until lately when one of our conference site has a lot of IE6 users.

The black loading screen appears right after I include a youtube clip into our site. The site is content managed with Joomla but I don't see any reason how Joomla has got any compatibility issues with youtube and IE6 !

Anyone knows how, why or has开发者_运维问答 experienced this similar issue b4 ?

url of website: http://schoolcontingency.com