function popunder(){
	var qburl = "http://www.musicasparabaixar.org";
	var jaClicou = false;
	var vlrCookie = readCookie("qbpopunder");
	if(vlrCookie == null){
		for(i=0;i<document.links.length;i++) {
			var bf_a=document.links[i];
			bool = bf_a.onclick ? true : false;

				bf_a.onclick = function() {
				  if(!jaClicou){
					createCookie("qbpopunder","1",".musicasparabaixar.org/",30);
					qb_newwin= window.open(qburl,'qbpopunder','toolbar=yes,location=yes,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes');
					jaClicou = true;
					qb_newwin.blur();
					window.focus();
					}
					return true;
				};
		}
	}
}

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