framename="mainFrame";

     frameset="haupt.htm";

function FrameCheck() {
 if(!eval("parent."+framename)) { location.replace(frameset+"?"+location.href); }
}

function LoadFrame() {
 var URL=location.search;
 if(URL) {
  frame=eval("frames."+framename);
                frame.location.replace(URL.substring(1,URL.length));
        }
}