var FrameName        = parent.frames[0].document.location;
  var PageNormal       = 'top.html';
  var LocationArray    = null;
  var LocationArrayRev = null;
  var FrameString      = null;
  var Section          = null;
  
  function parseSearchString(){
    var pairs=unescape(location.search.substring(1).replace(/\+/g," ")).split('&');
    for(var i=0;i<pairs.length;i++){
      var pair = pairs[i].split('=');
      this[pair[0]]=pair[1];
    }
  }
  var search = new parseSearchString();

  Section = search["section"];
  if(Section == 'quiz'){
    history.go(1);
  }

  FrameString          = FrameName.toString();
  LocationArray        = FrameString.split("/");
  LocationArrayRev     = LocationArray.reverse();
  CurrentDocument      = LocationArrayRev[0];
  
  if(CurrentDocument != PageNormal && Section != 'bereikbaar'){
    parent.frames[0].document.location = PageNormal;
  }