Problems with navbar browser consistency

[ozzie123]

I've been trying to figure out how to get my navigation area to appear consistent in a variety of browsers. I've managed (with alot of help) to get it looking pretty good on Firefox and IE on a PC but it gets wonky on FF and Safari on the Mac. There is a huge Mac crowd who will be looking at this site when its ready and I don't know what to do. The test site can be viewed at this link http://www.humanefood.ca/ccfasite/index.html The problem I'm having is with the search bar and button. On a Mac, everything looks compressed and I can't get the search bar and button to float right. Is there any way to make this look better in all browsers?

[bluewalrus]

Schmoopy had a problem with this earlier I gave him this link: http://blog.techsaints.com/2007/08/08/how-to-determine-the-operating-system-of-the-client-machine-with-javascript/ The threads here http://www.dynamicdrive.com/forums/showthread.php?t=38777 . He was also having a problem with mac and windows displaying differently and I think he gave a conditional statement to load different style sheets based on the OS.