(function ($) {

// browserTest
$.browserTest = function (a, z) {
  var u = 'unknown', x = 'X', m = function (r, h) {
    for (var i = 0; i < h.length; i = i + 1) { r = r.replace(h[i][0], h[i][1]); }
    return r;
  }, c = function (i, a, b, c) {
    var r = { name: m((a.exec(i) || [u, u])[1], b) };
    r[r.name] = true;
    r.version = (c.exec(i) || [x, x, x, x])[3];
    if (r.name.match(/safari/) && r.version > 400) { r.version = '2.0'; }
    if (r.name === 'presto') { r.version = ($.browser.version > 9.27) ? 'futhark' : 'linear_b'; }
    r.versionNumber = parseFloat(r.version, 10) || 0;
    r.versionX = (r.version !== x) ? (r.version + '').substr(0, 1) : x;
    r.className = r.name + r.versionX;
    return r;
  };
  
  a = (a.match(/Opera|Navigator|Minefield|KHTML|Chrome/) ? m(a, [
    [/(Firefox|MSIE|KHTML,\slike\sGecko|Konqueror)/, ''],
    ['Chrome Safari', 'Chrome'],
    ['KHTML', 'Konqueror'],
    ['Minefield', 'Firefox'],
    ['Navigator', 'Netscape']
  ]) : a).toLowerCase();
  
  $.browser = $.extend((!z) ? $.browser : {}, c(a, /(camino|chrome|firefox|netscape|konqueror|lynx|msie|opera|safari)/, [], /(camino|chrome|firefox|netscape|netscape6|opera|version|konqueror|lynx|msie|safari)(\/|\s)([a-z0-9\.\+]*?)(\;|dev|rel|\s|$)/));
  
  $.layout = c(a, /(gecko|konqueror|msie|opera|webkit)/, [
    ['konqueror', 'khtml'],
    ['msie', 'trident'],
    ['opera', 'presto']
  ], /(applewebkit|rv|konqueror|msie)(\:|\/|\s)([a-z0-9\.]*?)(\;|\)|\s)/);
  $.os = { name: (/(win|mac|linux|sunos|solaris|iphone)/.exec(navigator.platform.toLowerCase()) || [u])[0].replace('sunos', 'solaris') };
  if (!z) { $('html').addClass([$.os.name, $.browser.name, $.browser.className, $.layout.name, $.layout.className].join(' ')); }
};

$.browserTest(navigator.userAgent);

})(jQuery);