Entire “Index” File displaying Below “Sidebar” File

Hey guys:

I apologize if this has been covered before, but I’ve been searching the archives for about an hour and can’t find it (I’m not sure what the exact problem is, so I dont know what keywords to use).

Anyway, my blog at https://www.labelscar.com just broke, and I want to fix it since I have a lot of traffic and it’s practically unusable! It displays 100% fine in Firefox, but in IE, the entire “index” or body window is BLANK on the page until AFTER the end of the sidebar. So essentially, you arrive on the page and see a sea of white in the active window, with the sidebar at right. Scroll past the sidebar and then the index/active window area begins.

I don’t know what caused this, because I wasn’t messing with code at the time. My blogging partner went to make a post, and when he posted it it started this mess. He actually deleted the post ENTIRELY to try and fix it, but it wouldn’t return to normal!

Please help, everyone! I greatly appreciate it!