.scrollup{
	width:40px;
	height:40px;			
	text-indent:-9999px;
	opacity:0.5;
	position:fixed;
	bottom:50px;
	right:100px;
	display:none;
	background: url('../img/icon_top.png') no-repeat;			
	z-index:100;
}

@media only screen and (max-width: 769px) {
.scrollup{
	width:80px;
	height:80px;			
	text-indent:-9999px;
	opacity:0.5;
	position:fixed;
	bottom:50px;
	right:100px;
	display:none;			
	background: url('../img/icon_top1.png') no-repeat;
	z-index:100;
}
}