I've been trying to locate the problem, and I'm guessing that it's because of the CSS. Occasionally, the pictures in the product listing begin to overlap one another. This doesn't happen all the time, but it does once in a while. I'm hoping to fix this and would appreciate any input.

Please see this page as an example. (If you don't see any problems, click around to other categories to see the overlap.)

http://wishgiving.com/shop/index.php...ex&cPath=2_3_5

Thanks!