.back-to-top {
	padding-left: 12px;
	background-image: url("/images/iconic/raster/light_gray/arrow_up_8x8.png");
	background-position: center left;
	background-repeat: no-repeat;
}
.back-to-top:hover {
	background-image: url("/images/iconic/raster/dark_gray/arrow_up_8x8.png");
}