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):

http://www.thespanner.co.uk/2010/10/31/jsreg-bypasses/
http://rgaucher.info/planet/The_Spanner/2010/11/07/Soroush_Dalili_breaks_JSReg_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.