The Spanner - Detecting browsers javascript hacks http://www.thespanner.co.uk/2009/01/29/detecting-browsers-javascript-hacks/
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//Firefox detector 2/3 by DoctorDan
FF=/a/[-1]=='a'
//Firefox 3 by me:-
FF3=(function x(){})[-5]=='x'
//Firefox 2 by me:-
FF2=(function x(){})[-6]=='x'
//IE detector I posted previously
IE='\v'=='v'
//Safari detector by me
Saf=/a/.__proto__=='//'
//Chrome by me
Chr=/source/.test((/a/.toString+''))
■ マシン
OS: Windows XP Home Edition Service Pack 3 (build 2600) (Japanese)
IE(Trident): 7.0.5730.13
CPU: 1 of INTEL (Intel(R) Pentium(R) M processor 1.73GHz)
RAM: 502MB (154MB Free)
FlashPlayer: 10.0.12.36
FireWall: Trend Micro Personal Firewall