"Modern Web browsers have extensive support for the standards
defined by the World Wide Web Consortium. The Mozilla browsers,
both the Application Suite and Firefox, include a tool called the
DOM Inspector that exploits these standards. Here we'll take it for
a quick spin.
"Despite its very-nearly-but-not-quite-entirely-finished status,
the DOM Inspector has been a hit with Web developers. Even those
Web folk trapped in the embrace of Microsoft's Internet Explorer
sometimes use it as a diagnostic tool. It's that good..."