.nav_up{
	padding:7px;
	background-color:white;
	border:2px solid rgba(19, 19, 234, 1);
	position:fixed;
	background:transparent url(../images/arrow_up.png) no-repeat top left;
	background-position:50% 50%;
	width:20px;
	height:20px;
	bottom:10px;
	opacity:0.7;
	right:50px;
	white-space:nowrap;
	cursor: pointer;
	-moz-border-radius: 3px 3px 3px 3px;
    -webkit-border-top-left-radius:3px;
	-webkit-border-top-right-radius:3px;
    -khtml-border-top-left-radius:3px;
	-khtml-border-top-right-radius:3px;
	filter:progid:DXImageTransform.Microsoft.Alpha(opacity=70);
}