Ouch...so sorry to hear about this Stu
Farging iceholes installing this crap should be rolled in honey and tied to a fire ant mound
Looks like a lot of good ideas have already been proferred...hope you get it fixed soon!
I'm doing site reviews in FF. I have found that FF is less forgiving of bad code than IE. So, I made that one of the rules on my list...make sure your code is FF compliant. Haven't noticed any real problems or had any resistance from submitters...yet...
Good luck Stu!