Expanding Side Bars Problem

Hey guys,
Having an issue with my site here.

For some reason, I cannot get my side bars to expand downward with the content on my page. They just don't show. If I add content (like text or something) to the side bar's div, it will show up for however much content is in there (but I don't want to do that). I am pretty sure my div structure is correct, I just think I need to clear out some floats somewhere or something (which I have tried in several locations).

It is suppose to look like this screenshot of the design:
http://imagenerd.com/uploads/mainEKAS.jpg

Here is my page where you can view the source:



Any help is greatly appreciated!

Thanks,
Kyle