JS: Notice Bar

gistfile1

var closeNotice = document.querySelector(".close-notice");
var notice = document.getElementById("notice");
EventUtil.addHandler(closeNotice, "click", function(event){
	event = EventUtil.getEvent(event);
	EventUtil.preventDefault(event);
	alert("hello there");
	notice.setAttribute("class", "hide");
});

#notice {
	font-size: 22px;
	text-align: center;
	background: #698FEE; 
	color: #fff;
	padding: 20px;
}

.close-notice {
	font-size: 12px;
	font-weight: bold;
	color: #fff;
	display: block;
	padding: 7px;
	background: #3061DF;
	position: absolute;
	right: 401px;
	top: 15px;
	border-radius: 85px;
	width: 18px;
}