Sorry for the delay as I am/was too busy. Some of my friends had asked me to write about bypassing the JSReg in Hackvertor.com based on a challenge which was on sla.ckers.org forum by Gareth Heyes.
However, Gareth Heyes has already written great things about it that I can just refer you to the pages (instead of writing it again):
Gareth is writing these functions alone, so if you have any great idea please let him know. He is a nice and clever guy; so, do not miss your chance to have a great friend!
Again, thanks Gareth.