var cssFix = function(){
  var u = navigator.userAgent.toLowerCase(),
  is = function(t){return (u.indexOf(t)!=-1)};
  $("html").addClass([
    (!(/opera|webtv/i.test(u))&&/msie (\d)/.test(u))?('ie ie'+RegExp.$1)
      :is('firefox/2')?'gecko ff2'
      :is('firefox/3')?'gecko ff3'
      :is('gecko/')?'gecko'
      :is('opera/9')?'opera opera9':/opera (\d)/.test(u)?'opera opera'+RegExp.$1
      :is('konqueror')?'konqueror'
      :is('chrome/')?'chrome'
      :is('applewebkit/')?'webkit safari'
      :is('mozilla/')?'gecko':'',
    (is('x11')||is('linux'))?' linux'
      :is('mac')?' mac'
      :is('win')?' win':''
  ].join(''));
}();