function PageQuery(q) {
if(q.length > 1) this.q = q.substring(1, q.length);
else this.q = null;
this.keyValuePairs = new Array();
if(q) {
for(var i=0; i < this.q.split("&").length; i++) {
this.keyValuePairs[i] = this.q.split("&")[i];
}
}
this.getKeyValuePairs = function() { return this.keyValuePairs; }
this.getValue = function(s) {
for(var j=0; j < this.keyValuePairs.length; j++) {
if(this.keyValuePairs[j].split("=")[0] == s)
return this.keyValuePairs[j].split("=")[1];
}
return false;
}
this.getParameters = function() {
var a = new Array(this.getLength());
for(var j=0; j < this.keyValuePairs.length; j++) {
a[j] = this.keyValuePairs[j].split("=")[0];
}
return a;
}
this.getLength = function() { return this.keyValuePairs.length; } 
}
function queryString(key){
var page = new PageQuery(window.location.search); 
return unescape(page.getValue(key)); 
}

function displayItem(key){
if(queryString(key)=='false') 
{
//document.write("you didn't enter a ?name=value querystring item.");
//Geen geldige waarde gevonden
}else{
document.write(queryString(key));
var tidstat = displayItem('TopNavID');
}
}
var tidstat = queryString("TopNavID");
if (tidstat == 'false') (tidstat = '1')
var sidstat = queryString("SubNavID");
if (sidstat == 'false') (sidstat = '0')
var langstat = queryString("language");
if (langstat == 'false') (langstat = 'nl')
//displayItem('TopNavID');
//displayItem('SubNavID');
//alert(tidstat);
//alert(sidstat);
var file='/Statistics/count.asp?tidstat=' + tidstat + '&sidstat=' + sidstat + '&langstat=' + langstat;f='' + escape(document.referrer);u='' + escape(document.URL); var w=screen.width; var h=screen.height; v=navigator.appName; if (v != 'Netscape') {c=screen.colorDepth;}else {c=screen.pixelDepth;}var fs = window.screen.fontSmoothingEnabled;j=navigator.javaEnabled();info='w=' + w + '&h=' + h + '&c=' + c + '&r=' + f + '&u='+ u + '&fs=' + fs + '&j=' + j;document.open();document.write('<img src=' + file + '&'+info+ ' border=0 width=0 height=0>');document.close();