Browser detection

browser-1.2.0.js

/* Browser 1.2.0 | @gabrielizaias | MIT/GPL2 Licensed */
(function () {
  'use strict';
  var b = navigator.userAgent.toLowerCase(),
      e = document.getElementsByTagName('html')[0],
      c = b.indexOf('macintosh') !== -1 ? 'macintosh' : b.indexOf('windows') !== -1 ? 'windows' : b.indexOf('linux') !== -1 ? 'linux' : undefined,
      a = /(chrome)(?:.*chrome)?[ \/]([\w.]+)/.exec(b) || /(safari)(?:.*version)?[ \/]([\w.]+)/.exec(b) || /(opera)(?:.*version)?[ \/]([\w.]+)/.exec(b) || /(ie) ([\w.]+)/.exec(b) || !/compatible/.test(b) && /(firefox)(?:.*firefox)?[ \/]([\w.]+)/.exec(b) || [],
      f = e.className.split(' ');
  f.push(a[1], a[1]+parseInt(a[2], 10), c, navigator.platform)
  e.className = f.join(' ').replace(/^[\s\xA0]+|[\s\xA0]+$/g, '');
})();