Perfect in FF, fooked up in IE

Okey, first of all. I HATE IE. I’ve been doing so for years. I’m SOOO thankful for FireFox. IE doens’t even follow the standarising system.
Anyway, take a look at my site in FireFox:
https://www.daniel-sundgren.se
Then you take a look at it with this “so called” webrowser Internet Suxplorer.
What the heck is that virus (it’s almost like a virus, at least it gives you virus if you don’t know a thing about computers) doing to my webpage?
I wish I could write a scripts where it tells the surfer that the page doesn’t work in IE because it so worthless. But I can’t since 97%, or whatever, is using it. So I have to make it compatible with IE as well. I WILL promote FireFox as hell on my page thou.
Have you noticed that I REALLY hate IE by now? ??
What could be wrong? Only thing I’ve changed is to put in the menu in the header. And I followed the guide at
“https://fernando.dubtribe.com/archives/2004/10/12/adding-a-pure-css-menu/”.
Besides that I have only CHANGED values within the wp-layout.css. Okey, I’ve added a few tags for the navibar, but those shouldn’t affect the appearence that much.
Anyone have any clue of what could be wrong? Why is the layout so… Eum, NOT right in IE?
I’m thankful for any response that can solve this issue. I’m really confused about it since it works great at my other site (https://www.uvpucko.com).
I’ve removed the menu and done a few things to implement it as my newsscript. And it’s works pretty well as you can see, except that I wan’t to use a PHP include instead of an IFRAME, but things get fooked up then…
Ideas, anyone? ??