moofloor provides various classes to use with mootools.

FormCheck - Clientside Form Validation Class

Main features

• Lightweight, shiny and fast
• Skins support : customize css, fonts, ...
• Cross-browser compatibibility
• Live Validation
• Display errors as tips, or before/after the field
• Basic validation (required, alpha, digit, alphanu, length, confirm, ...)
• Regex validation (phone, email, url)
• Custom function based validation, to perform test that could not be handled by basic tests neither regex test.
• Make easily your own custom regex and alerts
• Internalization : we now support 10 different languages
• Active community
• A lot of options that allow you to customize this class to fit exactly your needs

Join Discussion Group http://groups.google.com/group/moofloor

Documentation and additional information can be found at : http://mootools.floor.ch/docs

Download: http://mootools.floor.ch/en/download/