/* CSS Browser Selector v0.4.0 (Nov 02, 2010) Rafael Lima (http://rafael.adm.br) http://rafael.adm.br/css_browser_selector License: http://creativecommons.org/licenses/by/2.5/ Contributors: http://rafael.adm.br/css_browser_selector#contributors v0.5.0 2011-08-24 andrew relkin modified, now detects: any version of Firefox more versions of Windows (Win7, Vista, XP, Win2k) more versions of IE under unique conditions if "no-js" in HTML class: removes and replaces with "js" () identifies browsers: Firefox; IE; Opera; Safari; Chrome, Konqueror, Iron browser versions: (most importantly: ie6, ie7, ie8, ie9) rendering engines: Webkit; Mozilla; Gecko platforms/OSes: Mac; Win: Win7, Vista, XP, Win2k; FreeBSD; Linux/x11 devices: Ipod; Ipad; Iphone; WebTV; Blackberry; Android; J2me; mobile(generic) enabled technology: JS */ function css_browser_selector(u) { var ua = u.toLowerCase(), is = function (t) { return ua.indexOf(t) > -1 }, g = 'gecko', w = 'webkit', s = 'safari', o = 'opera', m = 'mobile', f = 'firefox', h = document.documentElement, b = [ /* hat tip: https://github.com/kevingessner/css_browser_selector/ */ (!(/opera|webtv/i.test(ua)) && /msie\s(\d)/.test(ua)) ? ('ie ie' + (/trident\/4\.0/.test(ua) ? '8' : RegExp.$1)) : is('firefox/') ? g + " " + f + (/firefox\/(\d+(\.?\d+)*)/.test(ua) ? ' ' + f + RegExp.$1.replace(/\./g, "").substr(0, 2) : '') : is('gecko/') ? g : is('opera') ? o + (/version\/(\d+)/.test(ua) ? ' ' + o + RegExp.$1 : (/opera(\s|\/)(\d+)/.test(ua) ? ' ' + o + RegExp.$2 : '')) : is('konqueror') ? 'konqueror' : is('blackberry') ? m + ' blackberry' : is('android') ? m + ' android' : is('chrome') ? w + ' chrome' : is('iron') ? w + ' iron' : is('applewebkit/') ? w + ' ' + s + (/version\/(\d+)/.test(ua) ? ' ' + s + RegExp.$1 : '') : is('mozilla/') ? g : '' , is('j2me') ? m + ' j2me' : is('iphone') ? m + ' iphone' : is('ipod') ? m + ' ipod' : is('ipad') ? m + ' ipad' : is('mac') ? 'mac' : is('darwin') ? 'mac' : is('webtv') ? 'webtv' /* hat tip: https://github.com/saar/css_browser_selector */ : is('win') ? 'win' + (is('windows nt 6.1') ? ' win7' : is('windows nt 6.0') ? ' vista' : is('windows nt 5.2') || is('windows nt 5.1') ? ' xp' : is('windows nt 5.0') ? ' win2k' : '' ) : is('freebsd') ? 'freebsd' : (is('x11') || is('linux')) ? 'linux' : '' , 'js' ]; var c = b.join(' '); /* hat tip, paul irish: http://paulirish.com/2009/avoiding-the-fouc-v3/ */ h.className = h.className.replace(/no-?js/g, ''); h.className += (h.className.length > 0 ? ' ' : '') + c; return c; } css_browser_selector(navigator.userAgent);