function css_browser_selector(i){var b=i.toLowerCase(),a=function(a){return b.indexOf(a)>-1},d="gecko",f="webkit",e="safari",h=document.getElementsByTagName("html")[0],g=[!/opera|webtv/i.test(b)&&/msie\s(\d)/.test(b)?"ie ie"+RegExp.$1:a("firefox/2")?d+" ff2":a("firefox/3")?d+" ff3":a("gecko/")?d:/opera(\s|\/)(\d+)/.test(b)?"opera opera"+RegExp.$2:a("konqueror")?"konqueror":a("chrome")?f+" "+e+" chrome":a("applewebkit/")?f+" "+e+(/version\/(\d+)/.test(b)?" "+e+RegExp.$1:""):a("mozilla/")?d:"",a("j2me")?"mobile":a("iphone")?"iphone":a("ipod")?"ipod":a("mac")?"mac":a("darwin")?"mac":a("webtv")?"webtv":a("win")?"win":a("freebsd")?"freebsd":a("x11")||a("linux")?"linux":"","js"];c=g.join(" ");h.className+=" "+c;return c}css_browser_selector(navigator.userAgent)