// soll PerfTrack verwendet werden?
var perfTrack = true;

if(perfTrack == true){
	createCookie();
}else{
	deleteCookie();
}

function createCookie(){
	var newkey=randomString(4)+"."+randomString(4);
	var cook="PerfTrack="+newkey+"; path=/;";
	document.cookie = cook;
}
function deleteCookie(){
	var cook="PerfTrack=; path=/; expires=Thu, 01-Jan-70 00:00:01 GMT";
	document.cookie = cook;
}

function randomString(string_length) {
	var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
        if(typeof string_length == 'undefined'){
            string_length = 1;
        }
	var randomstring = '';
	for (var i=0; i<string_length; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	return randomstring;
}