function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		menu_algemeen_over = newImage("images/menu_algemeen-over.gif");
		menu_sieraden_over = newImage("images/menu_sieraden-over.gif");
		menu_exposities_over = newImage("images/menu_exposities-over.gif");
		menu_workshop_over = newImage("images/menu_workshop-over.gif");
		menu_agenda_over = newImage("images/menu_agenda-over.gif");
		menu_actueel_over = newImage("images/menu_actueel-over.gif");
		menu_contact_over = newImage("images/menu_contact-over.gif");
		menu_links_over = newImage("images/menu_links-over.gif");
		menu_vervolg_algemeen_over = newImage("images/menu_vervolg_algemeen-over.gif");
		menu_vervolg_sieraden_over = newImage("images/menu_vervolg_sieraden-over.gif");
		menu_vervolg_exposities_over = newImage("images/menu_vervolg_exposities-ove.gif");
		menu_vervolg_workshop_over = newImage("images/menu_vervolg_workshop-over.gif");
		menu_vervolg_agenda_over = newImage("images/menu_vervolg_agenda-over.gif");
		menu_vervolg_actueel_over = newImage("images/menu_vervolg_actueel-over.gif");
		menu_vervolg_contact_over = newImage("images/menu_vervolg_contact-over.gif");
		menu_vervolg_links_over = newImage("images/menu_vervolg_links-over.gif");
		preloadFlag = true;
	}
}

function cascadedstyle(el, cssproperty, csspropertyNS){
if (el.currentStyle)
return el.currentStyle[cssproperty]
else if (window.getComputedStyle){
var elstyle=window.getComputedStyle(el, "")
return elstyle.getPropertyValue(csspropertyNS)
}
}

function getWindowHeight() {
var windowHeight=0;
if (typeof(window.innerHeight)=='number') {
windowHeight=window.innerHeight;
}
else {
if (document.documentElement&&
document.documentElement.clientHeight) {
windowHeight=
document.documentElement.clientHeight;
}
else {
if (document.body&&document.body.clientHeight) {
windowHeight=document.body.clientHeight;
}
}
}
return windowHeight;
}


function setDIVHeight() {
if (document.getElementById) {
	var windowHeight=getWindowHeight();
	if (windowHeight>0) {
	var contElement=document.getElementById('vervolg-tekst_');
	var wrapElement=document.getElementById('wrapper-vervolg');
	if (contElement) wrapElement.style.height=windowHeight - 40 + "px";
	if (wrapElement) contElement.style.height=windowHeight - 200 + "px";
	}
}
}

window.onresize = function(){
	setDIVHeight();
}