Content Cutoff

My content is being cutoff ever since I changed the content body width from 650 to 500 px. I have to change the width because if not, then the sidebar will overlap the content. How do I keep it from getting cutoff? Here is the code I am using:

[CSS code moderated – the link to your site is enough to access the stylesheet]

And here is a preview of the site so you can see what I’m talking about, http://mmgtv.org/products-page/product-category/test-product/