function aufloesung() {

   if(screen.width < 1024)
   {
      window.document.write("<link rel='stylesheet' type='text/css' href='../../../css/aufloesung2.css' />");
      }
   else
   {
      window.document.write("<link rel='stylesheet' type='text/css' href='../../../css/aufloesung1.css' />");
      }
}