On mouseover everything is ok, but the active tab always reverts to the first (home) tab. I tried changing the cookie option, but that was worse because the last selected page's tab always came up, but the content wasn't right.
It also works a bit differently in IE than in Firefox, but this is relatively minor.
My site is http://ssr.webtechsellers.com if you'd like to view the source code. Thanks in advance for any ideas you may have.