PUBLIC MARKS with tags standard & dhtml

ARIA, formerly known as DHTML accessibility, is a standard being developed at W3C - World Wide Web Consortium

Accessible DHTML is now possible due to work that IBM is doing at the W3C, within the Firefox codebase, and with leading assistive technology (AT) vendors. The new standard allows authors to develop desktop-style widgets such as tree views, menu bars and spreadsheets that are accessible both with the keyboard and assistive technologies such as screen readers.