top {
	padding: 10px;
	background-color: #ddd;
	position: fixed;
	bottom: 10px;
	right: 10px;
	opacity: 0.5;
	filter: alpha(opacity=50);
	display: none;
border-radius: 5px 5px 5px 5px;
-moz-border-radius: 5px 5px 5px 5px;
-webkit-border-radius: 5px 5px 5px 5px;
border: 0px solid #000000;
}
top:hover {
	background-color: #bbb;
}