var menuItems = new Array("welkom", "assessments", "ontwikkeling", "organisatie", "persoonlijkeontwikkeling", "leiderschap");
	var imgOver = [];
	var imgOut = [];
	
	for ( var i = 0; i < 6; i++)
	{
		imgOver[i] = new Image(); imgOver[i].src = "images/overlay"+menuItems[i]+"wit.png";
		imgOut[i] = new Image(); imgOut[i].src = "images/overlay"+menuItems[i]+"grijs.png";
	}
	
	function setOver(obj, i) { if ( imgOver[i] != null ) obj.src=imgOver[i].src; }
	function setOut(obj, i)	{ if ( imgOut[i] != null ) obj.src=imgOut[i].src; }