I have tested this page in a few ways on a couple of platforms. FF, Safari, and even IE on windows have no problem with it. Dreamweaver Browser Compatibilty and W3 validation for XHTML and CSS both have no problem with it. However Opera makes hozontal spacing gaps between the navigation buttons that are between the top and the white area. Why? I can post any of the code if people can't see it in view source. I haven't had problem with Opera in other designs.