XPath and DOM Documents …
As I continue my learning of JavaScript I continue to learn some of the rich infrastructure. This is a very good article that applies well to many of the exact DOM operations that I am writing currently. I continue to be very impressed with this site, and this series of articles!

Searching DOMDocument Nodes. It’s easy to load XML data into Internet Explorer using JavaScript; the real fun starts when you try to find specific information within the DOMDocument tree. Learn how to search for and select specific nodes using XPath notation. By Yehuda Shiran and Tomer Shiran. 0226 [WebReference News]