div.youtubes a {
	display: block;
	width: 103px;
	height: 35px;
	background: transparent url(../images/sponsor-youtube.png) 0 0  no-repeat;
	text-indent: -9999px;
}

div.youtubes a:hover {
	background: transparent url(../images/sponsor-youtube.png) 0 -35px  no-repeat;
}