function detailBg(mode){
    detailBgdiv = document.getElementById('detailbg');
    if (mode == 'on') {
      detailBgdiv.style.display='block';
    } 
    else {
      detailBgdiv.style.display='none';
    }
  }

  function backgroundFL(mode){
    backgroundFLdiv = document.getElementById('backgroundFL');
    if (mode == 'on') {
      backgroundFLdiv.style.display='block';
      } 
    else {
      backgroundFLdiv.style.display='none';
     }
  }

  function vindu(url,title,width,height) {
   mywin = window.open(url,title,'width='+width+',height='+height+',scrollbars=no,resizable=no,menubar=no,status=no,toolbar=no');
   mywin.focus();
  }