Ajax refresh in, guess what, IE.

I’m doing this Ajax refresh thingy for on my site, but IE doesn’t load the page. IE6 doesn’t IE7 doesn’t. :@

Here’s the site, here’s the js and here’s the external file. I’m sooo new with Ajax, that I don’t have a clue about what to do…

I got the code from here (the last post), and I changed it a bit. But when using in IE, it just gives me a white page. It does show my background for a sec, but that’s it.

Can anyone help me?
Davey