function openPopup(URL) {
    venster = window.open(URL, 'popupvenster', 'width=420, height=280, resizable=no, menubar=no, scrollbars=no, status=no, toolbar=no');
}

function toggleCheckboxes(el_name) {
    var boxes = document.getElementsByName(el_name);
    for (var i = 0; i < boxes.length; i++) {
        boxes[i].checked = !boxes[i].checked;
    }
}

function toggleElementDisplay(id_el) {
    var el = document.getElementById(id_el);
    if (el.style.display != 'block') {
        var displ = 'block';
    } else {
        var displ = 'none';
    }

    el.style.display = displ;
}

function confirmDeleteRubriek(base_url, id) {
    if (confirm('Are you sure you want to delete this item?')) {
        location.href= base_url+'&rdelete='+id;
    }
}

function confirmDeleteDomein(base_url, id) {
    if (confirm('Are you sure you want to delete this item?')) {
        location.href= base_url+'&id_delete='+id;
    }
}

function setAsHome(myLink)
{
  if(navigator.appName.indexOf('Microsoft')!=-1)
  {
    // IE
    document.getElementById('bookmark').style.behavior='url(#default#homepage)';
    document.getElementById('bookmark').setHomePage(myLink);
  }
  else if(navigator.appName.indexOf('Netscape')!=-1)
  {
    // Netscape / firefox browsers
    var msg = "Sleep deze links op het 'home' icoon van uw browser om van deze pagina uw startpagina te maken";
    alert(msg);
  }
  else if(navigator.appName.indexOf('Opera')!=-1)
  {
    // Opera
    var msg = "Ga naar Tools - Voorkeuren ";
    msg += "- Algemeen and click 'Gebruik huidige' ";
    msg += "om deze pagina als uw startpagina in te stellen!";
    alert(msg);
  }
  else
  {
    // Other browsers
    var msg = "Sorry, uw browser negeert ";
    msg += "scripts om de startpagina in te stellen.";
    msg += "Gebruik uw browser's 'opties' dialoog ";
    msg += "om dit te doen! Dank u. ";
    alert(msg);
  }
}

function bookmarksite(tekst)
{
  if (document.all)
    window.external.AddFavorite(location.href, tekst);
  else if (window.sidebar)
  window.sidebar.addPanel(tekst, location.href, "")
}