Smilie problems

[Genma]

Hi everyone, I´m not an expert in javascript, but I know somewhere out there a genius script guy will help with my problem. I've made a shoutbox, but to be a perfect shoutbox, I need it to do the following:
Like the forums, I need a script that adds something to the textarea of the shout when you click on the image. Like when you click this:happysad: and on the textarea appears :haappysaad:.
I've seen that there is a function that finds the id of the textarea and adds some text if you add it to an onclick event, but I don´t know how to do that if the smilies are a separated html from the shoutbox html.
Hope I've made myself clear, my englsih is not that good.
please please please, I really need to know how to improve my shoutbox.
Thanx

 

[Swiblet]

Well, I didn't understand >.<

Everything I know about Javascript, I learned from W3Schools. Maybe your answer is there?

~~Ben

 

[mitamata]

I sorta understand what you're trying to do, but I'm confused about the "if the smilies are a separated html from the shoutbox html" part. You mean the smilies and the shoutbox are not on the same page? Cause that might complicate things
Can you show where you have this shoutbox? It would make it easier to help.

 

[Genma]

This is the shoutbox
http://genma.x10hosting.com/shoutbox.php
and when you click on smilies they appear in another window, just like in the forums. Please understand my bad bad english.
XD
Thanks n_n
Edit:
Sorry that link is just for the shouts. This is the real url.
http://genma.x10hosting.com/Shouty.html
It is like that because I iframe it in my web in a small window about the size of just the shouts and looks just like in this unfinished website (that is supposed to be a blog someday)
http://genma.x10hosting.com/
Thanks again.