I'm looking to use some simple JavaScript code on a message board when I'm posting a reply to a thread. I believe there was some kind of namescript or namespace in JavaScript that would take the username of whoever opened the thread and place it in my post.

So for example, if I said in a thread, "Welcome to my thread, [namescript]" it would place your board handle in the [namescript] function.

Any of this sound familiar to anyone and they could possibly point me in the right direction for what I'm looking for?