.navon {
	background-image: url(http://www.puromtb.com/portals/0/imagenes/play_on_01.gif);
	background-repeat: no-repeat;
	background-position: midle;
	height: 64px;
	width: 66px;
}



.navoff {
	background-image: url(http://www.puromtb.com/portals/0/imagenes/play_off_01.gif);
	height: 64px;
	width: 66px;
	background-repeat: no-repeat;
	background-position: midle;
}