Ajax library smackdown: Dojo versus YUI

Ajax library smackdown: Dojo versus YUI: "Asynchronous JavaScript and XML (Ajax) is everywhere, from the local newspaper to sites that CEOs surf. Contrary to popular belief, it isn't rocket science, especially with the right library. Explore the popular Yahoo! User Interface (YUI) and Dojo libraries, and learn how they can simplify typical Ajax techniques and make JavaScript easier to work with. Discover why you should use a library in the first place and how to choose among libraries. Get some specific examples from YUI and Dojo, as well."