function getxmlhttp (){
	//Create a boolean variable to check for a valid Microsoft active x instance.
	var xmlhttp = false;
	//Check if we are using internet explorer.
	try {
		//If the javascript version is greater than 5.
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		//If not, then use the older active x object.
		try {
			//If we are using internet explorer.
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			//Else we must be using a non-internet explorer browser.
			xmlhttp = false;
		}
	}
	// If not using IE, create a
	// JavaScript instance of the object.
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}

//Function to process an XMLHttpRequest.
function processajax (serverPage, obj, getOrPost, str){
	//Get an XMLHttpRequest object for use.
	xmlhttp = getxmlhttp ();

	// om de request uniek te maken, timestamp meesturen
	date = new Date();
	serverPage = serverPage + "&a="+date.getTime();
	
	if (getOrPost == "get"){
		xmlhttp.open("GET", serverPage);
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
				var newdiv = window.document.createElement("div");
				newdiv.innerHTML = xmlhttp.responseText;
				obj.innerHTML = "";
				obj.appendChild(newdiv);	
			}
		}
		xmlhttp.send(null);
	} 
	else {
		xmlhttp.open("POST", serverPage, true);
		xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
				var newdiv = window.document.createElement("div");
				newdiv.innerHTML = xmlhttp.responseText;
				obj.innerHTML = "";
				obj.appendChild(newdiv);	
			}
		}
		xmlhttp.send(str);
}
}