 <!--
 function show_uitleg(header, body){
    
		var pointel  = document.getElementById('topleft');		
		var uitlegEl = document.getElementById('uitleg');
		var headerEl = document.getElementById('submenu_header');
		var bodyEl   = document.getElementById('submenu_body');
		
		var x = getRealLeft(pointel);
		
		headerEl.innerHTML = header;	
		bodyEl.innerHTML   = body;		
		
		uitlegEl.style.left = x + 8;
		uitlegEl.style.visibility = 'visible';
		
		window.status = header;		
 }
 
 function hide_uitleg(){
    var uitlegEl = document.getElementById('uitleg');
		uitlegEl.style.visibility = 'hidden';
		window.status = '';
 }
 
 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;
 }

 //-->