Safari Layout Issues

Hello, I'm playing around with my site and have just inserted some script to insert Ebay Affiliation listings. Within Internet Explorer, it looks okay but within Firefox / Safari it looks distorted. Please review my site @ http://www.montechcentral.com.au/online-store/audio/. I have recently downloaded your simple-catch.2.6.7 wordpress theme and tested it on there as well and it works fine. Your advice would be appreciated