435234 Fix Javascript bug on site

I have a site that sells costumes. When someone wants to buy a costume, they select a color and a size, and then add it to their shopping cart. In firefox it all works fine, but in internet explorer it never shows the radio buttons for selecting a size. The url in question is at: [login to view URL] The javascript that controls the color and size radio buttons is at: [login to view URL] This should be a quick fix for someone. I need this fixed as soon as possible so only bid if you can start immediately. I will place payment into scriptlance escrow upon start of project and release it once the site is working properly in all main browsers (firefox, ie7, ie8, chrome, and safari)