function aufloesung()
{
   var hoch;
   var breit;
   hoch=screen.height;
   breit=screen.width;
   
   if ((hoch<=480 && breit<=640) || (hoch<=600 && breit<=800))
    document.location.href="fs_chli.html";
   
   else
   	document.location.href="fs.html";

}