For some reason my Firefox is not responding to the green zoom button on upper left of my Mac's screen (running snow leopard). The screen fonts, graphics etc. are way too large , and I would like to reduce size of all design elements -- especially for AOL -- using this feature or some other feature. BTW -- the green zoom button works for Safari, although the text and graphics size is a readable, small size in various screen sizes on Safari.

Can you help? Barry