Shoutbox

I think you should ask for something like this in a separate thread and see if someone helps you there (making sure you give all the information possible of what you want).  The idea of this script is to have a little window showing the last couple of messages so you don't have to go looking back to the chat if it something like a lol or you are busy reading a website or something.  Your idea sounds alright and maybe some other developer will help you with this but at the moment we have too many other scripts that we are working on I'm sorry to say.