function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		id01_over = newImage("img/m/w/home.gif");
		id02_over = newImage("img/m/w/nieuws.gif");
		id03_over = newImage("img/m/w/activiteiten.gif");
		id04_over = newImage("img/m/w/opleidingen.gif");
		id05_over = newImage("img/m/w/advies.gif");
		//id06_over = newImage("img/m/w/handelsvoorstellen.gif");
		id07_over = newImage("img/m/w/nuttigelinks.gif");
		id08_over = newImage("img/m/w/contact.gif");
		idhr_over = newImage("img/m/w/gr.gif");
		preloadFlag = true;
	}
}
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}
addLoadEvent(preloadImages);
function menuOpleidingen(){
	document.getElementById('td_4a').style.display='block';
	document.getElementById('td_4b').style.display='block';
	document.getElementById('td_4c').style.display='block';
}