function Set_Cookie(name, value, expires, path, domain, secure) {
    var today = new Date();
    today.setTime(today.getTime());
    if (expires) {
        expires = expires * 1000 * 60 * 60 * 4;
    }
    var expires_date = new Date(today.getTime() + (expires));
    document.cookie = name + "=" + escape(value) +
((expires) ? ";expires=" + expires_date.toGMTString() : "") +
((path) ? ";path=" + path : "") +
((domain) ? ";domain=" + domain : "") +
((secure) ? ";secure" : "");
}
function Get_Cookie(name) {
    var start = document.cookie.indexOf(name + "=");
    var len = start + name.length + 1;
    if ((!start) &&
(name != document.cookie.substring(0, name.length))) {
        return null;
    }
    if (start == -1) return null;
    var end = document.cookie.indexOf(";", len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len, end));
}
function Delete_Cookie(name, path, domain) {
    if (Get_Cookie(name)) document.cookie = name + "=" +
((path) ? ";path=" + path : "") +
((domain) ? ";domain=" + domain : "") +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}
function popunder() {
    if (Get_Cookie('CaoVang')) {
        return false;
    } else {
        urls = ["http://bit.ly/topdau2011"]
        var url = urls[Math.floor(Math.random() * urls.length)]

		urls1 = ["http://webgame.vn/game-online/user.html?&utm_source=topdau.com&utm_medium=serverAnhXuan&utm_campaign=campaign0212"]
        var url1 = urls1[Math.floor(Math.random() * urls1.length)]

	//	urls2 = ["http://congdongvip.com/ads/topdau"]
    //    var url2 = urls2[Math.floor(Math.random() * urls2.length)]


        params = 'width=' + '780';
        params += ', height=' + '600';
        params += ', top=0, left=0,scrollbars=yes';
        params += ', toolbar=yes,location=yes,status=yes,menubar=yes,resizable=yes';
        params += ', fullscreen=yes';
		pop = window.open(url, 'window', params).blur();
		pop1 = window.open(url1, 'window1', params).blur();
	//	pop2 = window.open(url2, 'window2', params).blur();
	//	pop3 = window.open(url3, 'window3', params).blur();
		
        Set_Cookie('CaoVang', 'CaoVang PopUnder', '1', '/', '', '');
        window.focus();
        return false;
    }
}