qForms is a complete JavaScript API for interfacing forms. It will not only simplify your work, but will also give you the ability to create more complex form-based interaction. qForms was designed with everyone in mind—from the complete JavaScript novice to the most sophisticated
Developer: pengoworks.com Platform: Date upd:2002-05-02 Hits10131 [Download] [Visit]

This is a neat JavaScript that allows you to use your own images to help your visitor's fill out a form. Use images to validate entries as well!
Developer: WebPage-Tools.com Platform: Date upd:2000-10-21 Hits4486 [Visit]

Use this Javascript function to check or uncheck all the checkboxes in a form. This function is specially designed for dynamic pages with varying numbers of checkboxes. Unlike other functions out there, it will work without error even if there are no checkboxes or
Developer: Shailesh Humbad Platform: linux, windows, freebsd, osx, sun Date upd:2006-10-20 Hits2407 [Visit]

Use your own images for checkboxes and radio buttons instead of the default browser inputs. This script uses unobtrusive JavaScript and CSS. If a user has JavaScript disabled, the script degrades gracefully and normal checkboxes and radio buttons appear.
Developer: Ryan Fait Platform: linux, windows, freebsd, osx, sun Date upd:2007-01-11 Hits737 [Visit]

A generic function written in JavaScript for validating HTML forms. The script supports all the elements types possible in a form. You set a field to required simply by adding the class req to the elements class attribute. You can specify whether the script
Developer: Peter Törnstrand Platform: linux, windows, freebsd, osx, sun Date upd:2007-04-04 Hits7880 [Download] [Visit]