Magnify website Font and Images

Whether you are visually impaired or just need a particular website page to be magnified, here's a great and easy trick:

on a web page hold down the Ctrl key and at the same time move the scroll wheel away from you,,,,this enlarges the text/ images and everything
whilst holding down the CTRl key and moving the scroll wheel towards you zooms out (reduces the size)

So is there a quick and easy way to get your default setting back?

ahhh … I found it.. CTRL + 0 (it's not the letter 'o'), for those others who needed to know.
Works in Mozilla Firefox version 3.5.2 and Internet Explorer 8.0.6. Probably works in most browsers that operate within Windows.

Doesn't work in SeaMonkey 1.17, will probably work in 2.0 since it's using the latest FF rendering engine.