I use and support both Mac and Windows systems. I do most of my work on a Mac, and
Firefox is my favorite browser.
In Firefox, when using the Tab key to move from field to field in Firefox, it natively wants to skip over any non-text fields. For instance, when completing an online form and moving from the City field to the State field, if the state field is a pull-down option field, using the Tab key skips over it.
The fix is a simple Mac OSX Preference setting! I found it at this website (
click here), but in case they remove the page, here's a screen shot of the fix: