#up {
	position: fixed;
	opacity: 0.4;
	padding: 15px 10px 10px;
	right: 20px;
	bottom: 10px;
	display: none;
	cursor: pointer;
	background: #aaa;
	border-radius: 5px;
	-webkit-border-radius: 5px;
	-moz-border-radius: 5px;

}