#screen-17-zoll {
	position:absolute;
	width:994px;
	height:618px;
	z-index:2;
	left: 50%;
	margin-top: Auto;
	margin-bottom: Auto;
	filter:alpha(opacity=60);
	opacity: 0.6;
	border: 1px dashed #999999;
	margin-left: -497px;
	visibility: hidden;
}