Place all files in the same directory (important), then load either webforms2.js or webforms2-p.js into your page.

For the latest version, implementation details, usage information, and a test suite, see: http://code.google.com/p/webforms2/

Licenses (as of Feb 6, 2011)
- MIT License (http://www.opensource.org/licenses/mit-license.php)
- GPL (http://creativecommons.org/licenses/GPL/2.0/)