function init() {
if (window.Event) {document.captureEvents(Event.MOUSEMOVE);}
document.onmousemove = haalMuisPositie; }

function haalMuisPositie(e) {
muisX = (window.Event) ? e.pageX : event.clientX;
muisY = (window.Event) ? e.pageY : event.clientY; }

function toonSubmenu(naam) {
//alert("aan: submenu_" + naam);
laag = document.getElementById('submenu_' + naam);
link = document.getElementById('hoofdmenu_' + naam);
laag.style.visibility = "visible";
link.className = "hoofdnavlink_active";
}

function verbergSubmenu(naam) {
//alert("uit: submenu_" + naam);
laag = document.getElementById('submenu_' + naam);
link = document.getElementById('hoofdmenu_' + naam);
laag.style.visibility = "hidden";
link.className = "hoofdnavlink";
}             

function setActive(element) {
element.className = 'active';
}

function setNotActive(element) {
element.className = '';
}