إقتباس ://sets the cookie
function setcookie(name, value, expires, path, domain, secure) {
document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : "; expires=" +
expires.toGMTString()) + ((path == null) ? "" : "; path=" + path) +
((domain == null) ? "" : "; domain=" + domain) + ((secure == null) ? "" : "; secure");

}

function getcookie(name,value) {
var search = name + "="
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset)
if (end == -1)
end = document.cookie.length
return unescape(document.cookie.substring(offset, end))
}
}
}

var name = getcookie("popupad");
var now = new Date()
now.setTime(now.getTime() + 31 * 24 * 60 * 60 * 1000)

if (!name) {
open(url,'HB',"toolbar=0,location=0,status=1,menubar=0,scrollbars=1,resizable=1, width=" + wwidth + ",height=" + wheight + ", left=" + wleft + ", top=" + wtop);

setcookie("popupad", now)
}

//-->

</script>