body {
	overflow: hidden;
}
.node {
	position: absolute;
	width: 16px;
	height: 16px;
	margin-left: -8px;
	margin-top: -8px;
	background: #000;
	border: 3px solid #555;
	border-radius: 16px;
	-moz-border-radius: 16px;
	text-align: center;
	line-height: 16px;
	color: #fff;
	font-size: 14px;
	cursor: default;
}