Site problem

Hi,

i've been experiencing some problems with an internet site :X
I use Firefox and when I try to open the site: www.illusion.be I just get a black screen, if I click refresh a few times fast I can see a the logo with a percentage underneath it but if goes away very quick.
With IE I can open it but I only get to see the left part, which start in the middle of the screen :S http://users.telenet.be/matthiasb/illusion.JPG

I've asked some friends and they could open the site with IE and Firefox, and it showed the site how it should be so the problem is on my pc :X

Already installed latest Flashplayer which didn't help anything...gonna install latest IE and firefox now but i'm quite sure it won't make a difference :(

What can I do to fix this since every other site works perfectly normal with firefox and IE?

Thx in advance!

EDIT: Oké, works with firefox already, problem with Adblock
EDIT2: No, don't want to use opera :)