if (document.documentElement && document.documentElement.clientWidth)
        TRKwinsize = document.documentElement.clientWidth + 'x' + document.documentElement.clientHeight;
    else if (document.body)
        TRKwinsize = document.body.clientWidth + 'x' + document.body.clientHeight;
    else
        TRKwinsize = window.innerWidth + 'x' + window.innerHeight;

        TRKscreen=screen.width+"x"+screen.height;
        if (navigator.appName != "Netscape") {TRKcdi=screen.colorDepth}
        else {TRKcdi=screen.pixelDepth};

	url=window.location.href;

var nth_user = 2;
var numberOfClicks = 1;
var expDays = 60;
var page = "/survey/index.php?screensize="+TRKscreen+"&screencolor="+TRKcdi+"&caller="+url;

var exp = new Date();
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
		return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}
function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" +
expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) +  
	((domain == null) ? "" : ("; domain=" + domain)) +    
	((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString(); }

function getCookieVal(offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
	endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr)); }

function hide(layerid) {
    document.getElementById(layerid).style.visibility = "hidden"; }

function show(layerid) {
    document.getElementById(layerid).style.visibility = "visible"; }

function pop(siteId) {

	if ( siteId == '3') varClose = "SCHLIESSEN"; else varClose = "CLOSE";

	var count = GetCookie('count');
	if (count == null) {
		count = 0;
	}
	if ( count == numberOfClicks) {
		var ran_number=Math.round(Math.random()*(nth_user-1));
//alert (ran_number + " -- " + nth_user-1);
		if (ran_number == nth_user-1) {
			document.getElementById('surveylayer').innerHTML="<div style=\"text-align:left; margin-left: auto; width: 660px; margin-right: auto;\"><div align=\"right\"><a href=\"#\" onClick=\"javascript:document.getElementById('surveylayer').style.visibility='hidden'\"><b>" + varClose + "</b></a></div><div><iframe src=\""+page+"\" width=\"660\" height=\"400\" style=\"border:2px solid #999999;\" align=\"left\" frameborder=\"0\"></div></div>";
			show('surveylayer');
		}
	}

/*
 else {
                        document.getElementById('surveylayer').innerHTML="<div style=\"text-align:left; margin-left: auto; width: 660px; margin-right: auto;\"><div align=\"right\"><a href=\"#\" onClick=\"javascript:document.getElementById('surveylayer').style.visibility='hidden'\"><b>" + varClose + "</b></a></div><div><iframe src=\""+page+"\" width=\"660\" height=\"400\" style=\"border:2px solid #999999;\" align=\"left\"></div></div>";
                        show('surveylayer');
	}  
*/

	if (count <= numberOfClicks) {
		SetCookie('count', parseInt(count)+1, exp, '/');
	}
}