Dynamic Content with DOM-2 (Part I)
http://developer.apple.com/internet/webcontent/dom2i.html

Apple Inc.
2006

Abstract:

The relatively recent emergence of peer-to-peer distributed computing and the renewed interest in real-time data exchange have stoked the embers of a hot topic: displaying dynamic content over the Web. Unfortunately, the statelessness of HTTP and the limitations of the rendering components of different browsers present significant challenges to web developers wishing to get fresh information to the client without sending additional requests to a server.