function createCookie(name, value, days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	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) {
		    return c.substring(nameEQ.length, c.length);
	    }
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name, "", -1);
}

function affiliateLink(anchor) {
    cookie = readCookie('afai-affiliate');
    if (cookie != null) {
        split = cookie.split('%2C');
        anchor.href = anchor.href + '&affiliate=' + split[0];
    }
}