175951 need help on css issue

Hi, I have a website online and have a css issue on my navigation. It looks perfect in FF but not in IE. The website is done with smarty templates. Please get an impression of the problem looking at: [login to view URL] It is about the big/long left hand navigation. "Difficulty" here is that we want only links with articles clickable and the others not. I think you can see it pretty well when you look at it. I think for a css experts it's only a 15 minutes job.