#back-top {
	position: fixed;
	bottom: 165px;
	margin-left: 900px;
}
#back-top a {
	width: 108px;
	display: block;
	text-align: center;
	font: 11px/100% Arial, Helvetica, sans-serif;
	text-transform: uppercase;
	text-decoration: none;
	color: #000000;
	/* background color transition */
	-webkit-transition: 1s;
	-moz-transition: 1s;
	transition: 1s;
}
#back-top a:hover {
	color: #ffffff;
}
/* arrow icon (span tag) */
#back-top span {
	width: 108px;
	height: 40px;
	display: block;
	margin-bottom: -50px;
	margin-top:16px;
	background:url(uparrow.jpg) no-repeat center center;
	-webkit-transition: 1s;
	-moz-transition: 1s;
	transition: 1s;
}

#back-top a:hover span {
	background: url(uparrow2.jpg)no-repeat center center;
}