Theme Help

There is probably such a easy solution to my problem. I’m just not seeing it.

I have been tweaking the original template to match my online store and came across a snag. My right nav is overlapping the footer. I’ve tried putting the right nav and content area into a table but so far I have had no success in fixing this issue. Here is an example: http://www.lalababyboutique.com/blog.

If anyone can help me out I would be so grateful

Thanks
Selie