#back-to-top {
	position: fixed;
	right: 5px;
	bottom: 0.2em;
	width:40px;
	height:40px;
	padding:0 !important;
	background-color:#000;
	opacity: 0.1;
	filter:alpha(opacity=10);
	-ms-filter:"alpha(opacity=10)";
	z-index:800;
}
#back-to-top img{
	width:100%;
}
#back-to-top :hover{
	cursor:pointer;
	opacity: 1;
	filter:alpha(opacity=100);
	-ms-filter:"alpha(opacity=100)";
}