This article was originally written by Todd Kloots for the Yahoo! Accessibility Lab. It answers a very common problem for Mac computers and has been re-printed within the Intuit Accessibility blog with permission from Yahoo Accessibility.
Full keyboard access isn’t enabled by default in Mac OS. Often this leaves developers thinking there is something wrong with the implementation of keyboard access for a site or application, when in fact it is just a matter of changing a few system and browser preferences.