Topic: Wrap selected textarea text in tags

How would i go about writting javascript code that would wrap the selected text in a text area in a tag like a bold tag or whatever else i wanted to do. exactly like the UBB code to the left of the text areas for this forum?

thank you for your time.

You could copy the code used here.

Here's some code a friend wrote:
http://www.webdevout.net/test?01t&raw

Yeah, the code here is open source, so go ahead, poke around in http://www.ozoneasylum.com/images/posting_input.js.php

Thanks guys i will look through that stuff.