function laadInhoud(url)
	{ 
	var xmlRequest = null; 
	if(window.XMLHttpRequest)
		xmlRequest = new XMLHttpRequest(); 
	else if (window.ActiveXObject)  
		xmlRequest = new ActiveXObject("Microsoft.XMLHTTP"); 
		xmlRequest.onreadystatechange = function()
	{ 
		if(xmlRequest.readyState == 4)
		{
			if(xmlRequest.status == 200) 
				document.getElementById("iframe_xhtml").innerHTML = xmlRequest.responseText;   
			else 
				alert("Error: " + xmlRequest.status);
		} 
	}
	xmlRequest.open("GET", url, true); 
	xmlRequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");  
	xmlRequest.send(null); 
}