These methods, if susported (if not use JSLRevision ;)), works directly in core.
The result is that every Array like instance now are more fast than ever, considering that join, pop, push, reverse, indexOf, shift, and forEach are widely used in a lot of projects.
This object could be the core for libraries like jQuery, or other that emulates array behaviour ... and I solved problems with sort plus some minor fix.
It has been successfully tested in FireFox, IE, Safari, and Opera.
Seems cool? I hope so :geek: