.tooltip{
	width: 167px;
	color:#000;
	font:lighter 11px/1.3 Arial,sans-serif;
	text-decoration:none;
	text-align:center;
	vertical-align: middle;
}

.tooltip span.top{padding: 25px 8px 0;
    background: url(/Ressource/images/common/bt.gif) no-repeat top}

.tooltip b.bottom{padding:3px 8px 8px;color: #548912;
    background: url(/Ressource/images/common/bt.gif) no-repeat bottom}