.mdtab{
	width:50px; 
	height:50px;
	padding:10px; 
	text-align:center; 
	text-decoration: none;
	position:fixed;
	top:75px;
	right:10px;
	display:none;
	background: url('../images/na_vrh1.png') no-repeat 0px 20px;
	z-index:1550;
	/*
	position: absolute;
	bottom: 0;
	right: 0;
	margin:0 10px 120px 0;
	*/
}
.mdtab:hover{
	text-decoration:none;
	background: url('../images/na_vrh.png') no-repeat 0px 20px;
}