function checkHeight() {
	var h1 = document.getElementById('frame1').offsetHeight;
	var h2 = document.getElementById('frame2').offsetHeight;
	var h3 = document.getElementById('frame3').offsetHeight;
	var h = h1;
	if (h2 > h) h = h2;
	if (h3 > h) h = h3;
	if (h < 500) h = 500;
	h = h + 'px';
	document.getElementById('frame1').style.height = h;
	document.getElementById('frame2').style.height = h;
	document.getElementById('frame3').style.height = h;
	
	
	//for the frontpage:
	if (document.getElementById('homeLeft')){
		h1 = document.getElementById('homeLeft').offsetHeight;
		h2 = document.getElementById('homeRight').offsetHeight;
		
		if (h1 >= h2) h = h1;
		if (h2 >= h1) h = h2;
		
		h1 = h + 'px';
		h2 = h + 5 + 'px';
		document.getElementById('homeLeft').style.height = h1;
		document.getElementById('homeRight').style.height = h2;	
	}
	
	/*
	if (ids) {
		if (ids != '') {
			var arr = ids.split('|');
			for (var x = 0; x < arr.length; x++) {
				var a = arr[x].split(',');
				var h = parseInt(document.getElementById(a[0]).offsetHeight) - 5;
				h = h + 'px';
				for (var y = 1; y < a.length; y++) {
					document.getElementById(a[y]).style.height = h;
				}
			}
		}
	}
	*/
}

function putCorners(upperDiv) {
	var obj = document.getElementById(upperDiv);
	var h = obj.offsetHeight;
	var w = obj.offsetWidth;
	var a = (0 - h) + 'px'; 
	document.getElementById(upperDiv + 'Corner').style.top = a;
	w = (w - 20) + 'px';
	h = (h - 20) + 'px';
	if (document.getElementById(upperDiv + 'Corner-2')) {
		document.getElementById(upperDiv + 'Corner-2').style.left = w;
	} 
	if (document.getElementById(upperDiv + 'Corner-3')) {
		document.getElementById(upperDiv + 'Corner-3').style.left = w;
		document.getElementById(upperDiv + 'Corner-3').style.top = h;
		document.getElementById(upperDiv + 'Corner-4').style.top = h;
		var a = '10px';
		obj.style.marginBottom = a;
	}
	document.getElementById(upperDiv + 'Corner').style.visibility = 'visible';
}

/* from the old index */
function showChildren(id, source) {
	var img = document.getElementById('img' + id);
	var children = document.getElementById('childrenDownloads' + id);
	if(source.indexOf('plus') > -1) {
		source = source.replace('plus','minus');
		children.style.display = '';
		img.alt = 'inklappen';
		img.title = 'inklappen';
	} else {
		source = source.replace('minus','plus');
		children.style.display = 'none';
		img.alt = 'uitvouwen';
		img.title = 'uitvouwen';
	}
	img.src = source;
	return false
}