if(navigator.appName=="Microsoft Internet Explorer")
 {if(screen.width >= 1024)
  {document.write('<link rel="stylesheet" href="css/seite.css" type="text/css">');
 }
  else
  {document.write('<link rel="stylesheet" href="css/seitekl.css" type="text/css">');
 }
 }
 else
 {if(screen.width >= 1024)
  {document.write('<link rel="stylesheet" href="css/seiten.css" type="text/css">');
  }
  else
  {document.write('<link rel="stylesheet" href="css/seitenkl.css" type="text/css">');
  }
}