String.prototype.count = function(char){
    return this.split(char).length-1;
}

function getDomain() {
	var domain = document.domain;
	if (domain.substring(0,4)=="www.") {
		domain = domain.substring(4, domain.length);
	}
	domain = domain.toLowerCase();
	domainParts = domain.split('.');
	domainPartsLength = domainParts.length;
	if(domainPartsLength > 2) domain = domainParts[domainPartsLength-2] + '.' + domainParts[domainPartsLength-1];
	return domain;
}

function precessVisitor(affiliate, referingSite) {
	var url = 'http://www.linkpros.nl/track.php?affiliate='+escape(affiliate)+'&referer='+escape(referingSite);
	document.write('<img src="'+url+'" width="1" height="1">');
}

var domain = getDomain();

var affiliate = '';
var hashUrl = self.document.location.hash.substring(1);
var referingSite = document.referrer;
var setCookie = '';
	
var nameEQ = 'linkAffiliateCookie=';
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
	var c = ca[i];
	while(c.charAt(0) == ' ') c = c.substring(1, c.length);
	if(c.indexOf(nameEQ) == 0) var setCookie = c.substring(nameEQ.length, c.length);
}

if(hashUrl.length > 0) affiliate = hashUrl;
else if(setCookie.length > 0) affiliate = setCookie;
	
var date = new Date();
date.setTime(date.getTime()+(24*60*60*1000));
var expires = '; expires='+date.toGMTString();
document.cookie = 'linkAffiliateCookie='+affiliate+expires+'; path=/; domain='+domain+';';	
precessVisitor(affiliate, referingSite);