This plugin will give you the basic helpers that Ruby has for prototype except written to work with Mootools (http://www.mootools.net). It's not a complete revamp (yet) of all the javascript helpers, but it covers most of the popular ones.
Commercial Use
Modify
Distribute
Sub-License
Private Use
Hold Liable
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.