function closeWindow(){
	var w = (parent)?parent:this;
 	w.window.close();
 	return false;
}



function delCookie(key){
	expiredate = new Date();
	expiredate.setYear(expiredate.getYear()-1);
	tmp = key+"=;";
	tmp += "expires="+expiredate.toGMTString();
	document.cookie = tmp;
	location.reload();
}