function makeRequest(url, container, mode) {
	var http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		http_request = new XMLHttpRequest();
	}else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) {
		alert('Geef t maar op XMLHTTP instance gaat niet lukken');
		return false;
	}
	http_request.onreadystatechange = function() {
		if (http_request.readyState == 4) {
			if (http_request.status == 200) {
				// hier kan dus vanaf de server met javascript van alles geschreven worden
				//alert(http_request.responseText);
				if( mode == 'replace' ) {
					container.innerHTML = http_request.responseText;
				} else {
					if( mode == 'append' ) {
						container.innerHTML += http_request.responseText;
					} else {
						if( mode == 'prefix' ) {
							container.innerHTML = http_request.responseText + container.innerHTML;
						}
					}
				}
			} else {
				alert('There was a problem with the request.');
			}
		}
	};
	http_request.open('GET', url, true);
	http_request.send(null);
}