.tooltip{
width: 200px; color:#000;
font:lighter 12px/1.1 Arial,sans-serif;
text-decoration:none;text-align:center;
}

.tooltip span.top{padding: 30px 8px 10px 8px;
    background: url(bt.gif) no-repeat top;
    font-size:14px;
    }

.tooltip b.bottom{padding:3px auto 15px auto;line-height:2;color: #548912;
    background: url(bt.gif) no-repeat left bottom;text-align:center;}