function postdata(obj, posturl, targetdiv, param) {
	var form = obj.elements;
	var returnString="";
	var val = "";
	
	for (var i=0;i<form.length;i++) {
		// Let op: velden worden op ID gechecked, niet op NAME. Daarbij worden hier alleen de velden met de tag INPUT en SELECT gelezen.
		if (form[i].nodeName == 'INPUT' || form[i].nodeName == 'SELECT' || form[i].nodeName == 'TEXTAREA') {
			
			switch(form[i].type) {
				case "checkbox":	// Als we te maken hebben met een checkbox
									/* Deze werking is het zelfde als de radio button 11-04-07
									if (form[i].checked) {
										returnString = returnString + '&' + form[i].id + '=1';
									} else {
										returnString = returnString + '&' + form[i].id + '=0';
									}
									break;
									*/

				case "radio":		// Als we te maken hebben met een radio, alleen checked value doorgeven!
									if (form[i].checked) {
										returnString = returnString + '&' + form[i].id + '=' + form[i].value;
									}			
									break;

				default:			returnString = returnString + '&' + form[i].id + '=' + form[i].value;
									break;
			}									
		}
	}
	makeRequest(posturl, targetdiv, returnString + param);
}

function makeRequest(linkurl, targetdiv, parameters) {
	var http_request = false;
	var params = null;
	if (parameters) {
		parameters = parameters.replace("&amp;", "&");
		params = parameters.replace("&amp;", "&");
	}

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			http_request.overrideMimeType('text/html');
		}
	} 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('Cannot create XMLHTTP instance');
		return false;
	}
	
	http_request.onreadystatechange = function() { alertRequest(http_request, targetdiv); };
	
	http_request.open('POST', linkurl, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
//	http_request.setRequestHeader("Content-length", para.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(params);
}


function alertRequest(http_request, targetdiv) {
	if (http_request.readyState == 4) {
		 //if (http_request.status == 200) {
			result = http_request.responseText;
			var s = "", r = /<script>([\s\S]+)<\/script>/mi;
			if (result.match(r)){
				s = RegExp.$1; // extract script
				result = result.replace(r, "");
			}
			if (targetdiv!='' && document.getElementById(targetdiv)) {
				document.getElementById(targetdiv).innerHTML = result;
			}	
			eval(s); // execute script
		 //} else {
			//alert('There was a problem with the request. Current status == '+http_request.status);
		 //}
	}
}
// AJAX einde

function getHeight(id) {
	document.getElementById(id).style.height="auto";
	// match box models
	if (document.all) {
		return document.getElementById(id).offsetHeight+10;
	} else {
		return document.getElementById(id).offsetHeight;
	}
}