1 function getExplorer() { 2      //IE 3      if (navigator.userAgent.indexOf("MSIE")>=0)  4      { 5         9      }10      //Firefox11      else if (navigator.userAgent.indexOf("Firefox")>=0) 12      {13       16      }17      //Chrome18      else if(navigator.userAgent.indexOf("Chrome") >=0)19      {20       26       }27       //Safari28       else if(navigator.userAgent.indexOf("Safari") >=0 )   29       {30       35       }36 }