Change Text Size

Firefox 2

Increase text size.
Menu: View > Text Size > Increase. Shortcuts: Ctrl + +.
Decrease text size.
Menu: View > Text Size > Decrease. Shortcuts: Ctrl + -.
Normal text size.
Menu: View > Text Size > Normal. Shortcuts: Ctrl + 0.
Screenshot.
Settings for text size in Firefox 2

On this website

Use the menu: "Text Size".