javascript一行檢測瀏覽器

B=(function x(){})[-5]=='x'?'FF3':(function x(){})[-6]=='x'?'FF2':/a/[-1]=='a'?'FF':'\v'=='v'?'IE':/a/.__proto__=='//'?'Saf':/s/.test(/a/.toString)?'Chr':/^function \(/.test([].sort)?'Op':'Unknown'

參考網址
http://jsgears.com/thread-168-1-1.html
http://ajaxian.com/archives/ievv