var Image01 = new Image();	Image01.src = "images/navigatie_actueel.gif";
var Image02 = new Image();	Image02.src = "images/navigatie_actueel_over.gif";
var Image03 = new Image();	Image03.src = "images/navigatie_projecten.gif";
var Image04 = new Image();	Image04.src = "images/navigatie_projecten_over.gif";
var Image05 = new Image();	Image05.src = "images/navigatie_publicaties.gif";
var Image06 = new Image();	Image06.src = "images/navigatie_publicaties_over.gif";
var Image07 = new Image();	Image07.src = "images/navigatie_bureau.gif";
var Image08 = new Image();	Image08.src = "images/navigatie_bureau_over.gif";
var Image09 = new Image();	Image09.src = "images/navigatie_contact.gif";
var Image10 = new Image();	Image10.src = "images/navigatie_contact_over.gif";

var changeImage = function (ImgName){
	var CurSrc = document.images[ImgName].src
	var ImgSrc

	if(typeof activeImage != "undefined"){
		if(ImgName != activeImage){
			switch(ImgName){
				case "ImgActueel":		if(CurSrc == Image01.src){ImgSrc = Image02.src}else{ImgSrc = Image01.src}; break
				case "ImgProjecten":	if(CurSrc == Image03.src){ImgSrc = Image04.src}else{ImgSrc = Image03.src}; break
				case "ImgPublicaties":	if(CurSrc == Image05.src){ImgSrc = Image06.src}else{ImgSrc = Image05.src}; break
				case "ImgBureau":		if(CurSrc == Image07.src){ImgSrc = Image08.src}else{ImgSrc = Image07.src}; break
				case "ImgContact":		if(CurSrc == Image09.src){ImgSrc = Image10.src}else{ImgSrc = Image09.src}; break
			}
	
			if(typeof ImgSrc != "undefined"){
				document.images[ImgName].src = ImgSrc
			}
		}
	}
}

var vervangImg = function(imgSrc){
	document.images.VisieImg.src = document.images[imgSrc].src
}

//rechtermuisklik uitschakelen:
var message="Deze informatie is auteursrechtelijk beschermd";

function clickIE4(){
	if (event.button==2){
		alert(message);
		return false;
	}
}

function clickNS4(e){
	if (document.layers||document.getElementById&&!document.all){
		if (e.which==2||e.which==3){
			alert(message);
			return false;
		}
	}
}

if (document.layers){
	document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=clickNS4;
}else if (document.all&&!document.getElementById){
	document.onmousedown=clickIE4;
}

document.oncontextmenu=new Function("alert(message);return false")