<!--
// prototype $() function to replace document.getElementById()
function $() {
	var elements = new Array();

	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
		element = document.getElementById(element);

		if (arguments.length == 1)
		return element;

		elements.push(element);
	}

	return elements;
}

function changeCssClass(objTarget, strClassName){
	objTarget.setAttribute("class", strClassName);
	objTarget.setAttribute("className", strClassName);
}

function trim(str) {
	return str.replace(/^\s+|\s+$/g, "");
}

function getRealLeft(el){
	xPos = $(el).offsetLeft;
	tempEl = $(el).offsetParent;
	while (tempEl != null) {
		xPos += tempEl.offsetLeft;
		tempEl = tempEl.offsetParent;
	}
	return xPos;
}

function getRealTop(el){
	yPos = $(el).offsetTop;
	tempEl = $(el).offsetParent;
	while (tempEl != null) {
		yPos += tempEl.offsetTop;
		tempEl = tempEl.offsetParent;
	}
	return yPos;
}

function getpos(isID){
	trueX = getRealLeft(isID);
	trueY = getRealTop(isID);
	return Array(trueX, trueY);
}

function position_beeld_overlay() {
	el = $("beeld");
	if (el == undefined) return;
	el2 = $("beeldoverlay");
	el3 = $("beeldnavigatie");
	el_top = el.offsetHeight - el2.offsetHeight;
	el2.style.top = el_top + "px";
	el2.style.visibility = 'visible';
	el3.style.top = el_top + "px";
	el3.style.visibility = 'visible';
}

addevent(window, "load", position_beeld_overlay);
-->