The Zend Developer Zone has posted part two in their look at developing an Ajax and PHP chat client. They build on part one and bring some new guests to the party - Prototype and Scriptaculous.
For this chat application we'll be using two popular javascript libraries: Prototype and Scriptaculous. Prototype is a Javascript framework that aims to ease development of dynamic web applications. Using Scriptaculous, complex effects like sliders, drag and drop and similar features can be implemented quite easily without much effort.
They assume that you can get Prototype and Scriptaculous set up yourself and move quickly on to the HTML for the chat client interface. Some CSS is included to make things a bit more attractive, and they show how to change the IndexController and include the needed Javascript files to make the interface work. Keep an eye out for the next tutorial where it's back to the server side of things...