css sculptor page browser issues

I have two pages I created using CSS Sculptor and CSS Menu Writer.

Here's the first page deanco.iongraphics.com/
It seems to work fine in FireFox & Explorer on PC, as well as FireFox & Safari on Mac. I also tested it on my other older MAC with other older FireFox, Safari & Explorer for Mac browsers--and the only older browser version it was a disaster in was Explorer for Mac. But everything else was great.

Here's the second page contact.php
Again, it seems to work fine in FireFox & Explorer on PC, as well as FireFox & Safari on Mac. But when I tested it on my other older MAC with other older FireFox, Safari & Explorer for Mac browsers--those 3 browsers were a complete disaster. Totally screwed up. This page has the Contact Form Solution Pack form on it, but that is not causing the problem--here is a page exactly like the second page, but before the contact form was applied to it contact2.php So it is not the Contact Form Solution Pack causing the problems.

I'm under a lot of pressure to finish this site, so I hope it's something simple to fix. Any help appreciated!!!

thanks