/******************* building *******************/
#building_antennas {
	background-image:url(../../assets/graphics/antennas-menu.jpg);
	background-repeat:no-repeat;
	
	display: block;
	width: 180px;
	height: 16px;
	background-position: 0 0;
}
#building_antennas:hover {
	background-position: -180px 0px;
}
#building_antennas span {
	display: none;
}

/******************* mobile *******************/
#mobile_antennas {
	background-image:url(../../assets/graphics/antennas-menu.jpg);
	background-repeat:no-repeat;
	display: block;
	width: 180px;
	height: 16px;
	background-position: 0px -20px;
}
#mobile_antennas:hover {
	background-position: -180px -20px;
}
#mobile_antennas span {
	display: none;
}
/******************* END MENU *******************/