If my forms id name was called 'myform' and a text box was named 'tbox' then how would I communicate with that text box and change it dynamiocally

I was thinking like with forums. You have a list of smilies and you click on one and the text box gets the psuedo html script for that image

You know what I mean. Just click the reply box to this post and loads of icons appear and if you click on them the text box is altered.