Thanks sheco, I had already looked at the HTTP_USER_AGENT but didnt know if there was anything better.
The reason why i want to figure out if the user is a mac, is to find a new control that will possible work for a mac.
The project gives doctors the ability to view medical charts, and even though the portal system that they access this information though, does not support mac, some of the docs us a mac and I am required to come up with something for a mac.
Thanks for your help.
Do you have any ideas on how a mac user can view Tiffs in the broswer?