If you were using Internet Explorer 6 or 7 on a Windows machine or Opera 9, this demo would actually work!
Intro
Validation
Date and time types
Range control
Repetition
Calculated fields
Datalist
Autofocus
Prefilling forms
Roundtripping data
Input mode

Web Forms 2

This site is a tutorial and showcase for Web Forms 2.0 as implemented in Internet Explorer 6

The spec and the implementation is still a work in progress - use at own risk!

Web Forms 2 builds on HTML 4 forms, but extends them in several ways. The most important are:

The implementation is developed as a SourceForget project.

The specification is developed by the WHAT Working group