function displayDefaultHeader(el) {
	if (el.src)
		el.src = '/images/algemeen/header.jpg';
}

//display empty image if logo is not available
function displayEmpty(el)  {
	if (el.src)
		el.src = '/images/dot_clear.gif';
}

//hoogte browser
	var isNav4, isNav6
	var isBrand = navigator.appName
	var navVer = parseInt(navigator.appVersion)
	
	var isNav4 = (isBrand == "Netscape" && navVer < 5) ? true : false
	var isNav6 = (isBrand == "Netscape" && navVer >= 5) ? true : false

function getInsideWindowHeight() {
	if (isNav4 || isNav6)
		return window.innerHeight
 	else 
	    return document.body.clientHeight
}

//this function will get the current/computed style in IE and Moz/FF
function getStyle(obj,Attribute) {
	if (obj) {
		if (obj.currentStyle)
			var value = eval('obj.currentStyle.'+Attribute)
		else
			var value = eval('document.defaultView.getComputedStyle(obj, null).'+Attribute)
		return parseInt(value);
	}
}

function setHeights() {
// dont do any set height anymore
// to prevent errors for pakketwizard
// JV January 2010
return false;	
schermhoogte 		= getInsideWindowHeight();
	var mainsite		= document.getElementById('mainsite');
	var divmaintable	= document.getElementById('divMaintable');
	var maintable		= document.getElementById('maintable');
	var payoff			= document.getElementById('payoff');
	var bwstIframe		= document.getElementById('bwstIframe');
	var margintop		= parseInt(getStyle(divmaintable,'top')) + parseInt(getStyle(divmaintable,'paddingTop')) + parseInt(getStyle(divmaintable,'paddingBottom')) + 1;
	
	var height			= maintable.offsetHeight;
	
	if ((height + margintop) > schermhoogte) {
		mainsite.style.height = height + margintop;
		maintable.style.height = height - margintop;
		if (bwstIframe)
			bwstIframe.style.height = height - margintop;
	} else {
		divmaintable.style.height = schermhoogte - margintop;
		maintable.style.height = schermhoogte - margintop - getStyle(payoff,'height');
		if (bwstIframe)
			bwstIframe.style.height = schermhoogte - margintop - getStyle(payoff,'height');
	}
}