if(self == top){
     if(document.layers)
          indexDat="http://www.kzu.ch/index_ns.html";
     else
          indexDat="http://www.kzu.ch/index.html";
     //document.location.replace(indexDat+"?page="+document.location.href);
        //zwingt alle Seiten ins KZU-Frame
}
else if(top.setNav)
     top.setNav();