Textbox questions!

[afreeGaming]

I was woundering how i could get it so if a user presses a button it adds text to the textbox. For example, my game has a chatroom and I want to add bold, italic, underline images so when they click on them it adds "[B],[I] or [U]" to the textbox.

Know what i mean?

[meow]

I think you'll have better luck if you post this in the JavaScript forum (sorry, don't know how to do it). :)