var xmlHttp

function logReferrer(page){
	
	if (parseInt(navigator.appVersion)>3) {
		if (navigator.appName=="Netscape") {
			winW = window.innerWidth;
			winH = window.innerHeight;
		}
		if (navigator.appName.indexOf("Microsoft")!=-1) {
			winW = document.body.offsetWidth;
			winH = document.body.offsetHeight;
		}
		var availableResolution = winW+"x"+winH
	}

	
	
	
		//Wanneer er vanaf een andere server gereferred wordt
		xmlHttp=GetXmlHttpObject()
		var url="includes/referrer.php"
		url=url+"?referrer="+document.referrer
		url=url+"&page="+page
		url=url+"&userAgent="+navigator.userAgent
		url=url+"&userLanguage="+navigator.systemLanguage
		//url=url+"&operatingSystem="+GetOperatingSystem()
		url=url+"&screenResolution="+screen.width+'x'+screen.height
		url=url+"&availableResolution="+screen.availWidth+"x"+screen.availHeight
		url=url+"&colorDepth="+screen.colorDepth
		//url=url+"&installedFlash="+currentPage
		url=url+"&page="+page
		url=url+"&availableResolution="+availableResolution

	if (xmlHttp!=null){
		xmlHttp.onreadystatechange=stateChanged
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)
	}
}

function stateChanged(){
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
	//document.getElementById("txtHint").innerHTML=xmlHttp.responseText
	
	}
}

function GetXmlHttpObject(){
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
	objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
	objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}
/*
function GetOperatingSystem(){
	var i_win;
	var v_win;
	var agt=navigator.userAgent.toLowerCase();
	if (agt.indexOf("win")!=-1 || agt.indexOf("16bit")!=-1)
	i_win = true;
	if (i_win) {
	if (agt.indexOf("win95")!=-1 || agt.indexOf("windows 95")!=-1)
	v_win = "Windows 95";
	if (agt.indexOf("win98")!=-1 || agt.indexOf("windows 98")!=-1)
	v_win = "Windows 98";
	if (agt.indexOf("win 9x 4.90")!=-1)
	v_win = "Windows ME";
	if (agt.indexOf("winnt")!=-1 || agt.indexOf("windows nt")!=-1)
	v_win = "Windows NT";
	if (agt.indexOf("windows nt 5.0")!=-1)
	v_win = "Windows 2000";
	if (agt.indexOf("windows nt 5.1")!=-1)
	v_win = "Windows XP";
	if (agt.indexOf("windows nt 6.0")!=-1)
	v_win = "Windows Vista";
	if (!v_win)
	v_win = "Unknown Windows";
	}
	if (!i_win) {
	if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "Unknown";
	}
	(typeof(navigator.oscpu) != "undefined" && navigator.oscpu != "") ? return(navigator.oscpu) : return (OS);
	if (i_win)
	return (" - " + v_win);
}

function checkIt(s) {
	place = detect.indexOf(s) + 1;
	thestring = s;
	return place;
}
*/