body
    {
     margin:0px;
     padding:0px;
     text-align:center;
    }

div
    {
margin:20px auto;
     text-align:left;
     width:425px;
    }

a.youtube{
	background-image: url(images/youtube1.gif);
	background-repeat: no-repeat;
	background-position: left top;
	display: block;
	margin: 10px 0 0 0px;
	height: 35px;
	width: 205px;
	padding: 0px;text-indent:-999999px;
outline:none;
}
a.youtube:hover{background-position: right top;}