function is_msie() {
  return (navigator.appName == "Microsoft Internet Explorer");
}

function Framing()
{ 
  if (this.document == top.document || 
      top.location.host != this.location.host) {
    var pathprefix = location.protocol + '//'  
      + location.host
      + location.pathname.substring(0,      
        location.pathname.lastIndexOf('/')+1);

    var doctitle = document.title;

    document.clear();
    document.open("text/html");
    document.writeln('<html>\n<head><title>' +doctitle+    
      '</title></head>');
    document.writeln('<frameset cols="158,*" BORDER="0">'+
      '<frame src="'+pathprefix+'inhaltsverzeichnis.htm" name=1>'+
      '<frame src="'+top.location.href+'" name=rechts>'+
      '</frameset></html>');
    document.close();
    return true;
  } 
  return false;
}

function msieFraming() {
  if (is_msie()) {
    if (Framing()) {
      window.setTimeout('top.frames["rechts"].location.href = '+
        '"'+top.location.href+'";',10);
    }
  }
}

function netscFraming() {
  if (!is_msie()) Framing();
}

msieFraming();
