I downloaded some fonts to use for some digital graffiti art project. I installed them on my computer using fontbook. Somehow, (accidentally) all my browsers' (safari, opera, chrome, and firefox) fonts got changed to one of the graffiti fonts. Really hard to read! LOL!! It's only some of the text though. All the text on this site is normal, in google most is changed to the graf text. I'm not sure how to change it back. Can anybody help? Using the latest version of OS X.