سلام
این هم یک اسکریپت آجاکس برای ساخت محل چت و گفتمان

http://4down.info/uploads/posts/2008-12/1228756314_ajax20im.jpg

ajax im (asynchronous javascript and xml instant messenger) is a browser-based instant messaging client. It uses AJAX to create a near real-time IM environment that can be used in conjunction with community, intranet, and social websites. No refreshing of the page is ever needed for this web application to work, as everything is updated in real-time via JavaScript.

دانلود:
http://www.ajaxim.com/download/3.4