Facebook-like chat

Hi everyone.

This is more an orientation request than a problem i have. I need to implement a facebook-like chat in an application i’m already developing with yii. Every user logged in the application should have the ability to comunicate with the others users already logged in, inside the application.

Any ideas? Any already built extension or package or api around there?

Thanks for your comments…

Have a look at this http://anantgarg.com/2009/05/13/gmail-facebook-style-jquery-chat/ it should work!!