var xmlhttp;

// ----------------------------------------------
function GetXmlHttpObject() {

	if (window.XMLHttpRequest)  {
	  // code for IE7+, Firefox, Chrome, Opera, Safari
	  return new XMLHttpRequest();
	}
	if (window.ActiveXObject)  {
	  // code for IE6, IE5
	  return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}

// ----------------------------------------------
function writeStatistics(site, product, actie) {

	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null) {
	  alert ("Browser does not support HTTP Request");
	  return;
	}	
	var url="ajax/writeStatistics.php" + "?site=" + site + "&product=" + product + "&actie=" + actie  + "&sid=" + Math.random();
	xmlhttp.onreadystatechange=stateChanged_showStatistics;	
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

// ----------------------------------------------
function stateChanged_showStatistics(){

	if (xmlhttp.readyState==4) {
		document.getElementById("showStatistics").innerHTML=xmlhttp.responseText;		
	}
}