.angolobassodx {
	background-image: url(ang_bdx.gif);
	height: 20px;
	width: 20px;
}
.anglatosx {
	background-image: url(ang_asx.gif);
	height: 20px;
	width: 20px;
}
.angdxalto {
	background-image: url(ang_adx.gif);
	height: 20px;
	width: 20px;
}