var cname = "adpopunder2501";
var cname_showed = "showed";

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=/";
	this[name] = value;
}
function readCookie(cookieName) {
	var theCookie = "" + document.cookie;
	var ind = theCookie.indexOf(cookieName);
	if (ind == -1 || cookieName == "") return ""; 
	var ind1 = theCookie.indexOf(';', ind);
	if (ind1 == -1) ind1 = theCookie.length;
	return unescape(theCookie.substring(ind + cookieName.length + 1, ind1));
}
function showpopunder() {
	var div = document.getElementById("topadv");
	var c = readCookie(cname);
	if (c != "showed") {
		//div.style.display = "block";
	}
}
function closepopunder() {
	var div = document.getElementById("topadv");
	createCookie(cname, cname_showed, 1);
	div.style.display = "none";
}