Firefox greasemonley

if you've not alreay then i recomend that you get this plugin for firefox, it's sweet! If you've not got firefox then get it here

What it does:

Allows you to customize the way a webpage displays using small bits of JavaScript.

Hundreds of scripts, for a wide variety of poular sites, are already available at http://userscripts.org.

You can write your own scripts, too. Mark Pilgrim's definitive Greasemonkey guide, diveintogreasemonkey.org will show you how.

I really like the fact that you can resize the fonts with the google 'your home page'