.tooltip{ width: 200px; color:#000; font:lighter 11px/1.3 Arial,sans-serif; text-decoration:none;text-align:center}
.tooltip span.top{background: url('../_img/bt.gif') no-repeat top; ; padding-left:8px; padding-right:8px; padding-top:30px; padding-bottom:0}
.tooltip b.bottom{color: #548912; background: url('../_img/bt.gif') no-repeat bottom; ; padding-left:8px; padding-right:8px; padding-top:3px; padding-bottom:15px}