[WSG] a:hover delayed

[José de Jesús Sanchez Betanzos]

Hi, I'm jesus.

Look how the a:hover effect in the following menu make the browser slow...
http://www.jesusbet.net/tmp/sp/

I wanted to do something like the menu on the web standards group homepage:
http://webstandardsgroup.org/

And I did it, but when you browse the menu using Internet Explorer,it makes the browser slow...

I was checking my code and it looks the same as the CSS code in cssbeauty menu... but i couldn't fix it...

Thanks for your help... (and sorry for my english :D)