.tooltip{
width: 200px; color:#000;
font:lighter 11px/1.3 Arial,sans-serif;
text-decoration:none;text-align:center;position:absolute; 
z-index:105;}

.tooltip span.top{padding: 30px 8px 0;
    background: url(bt.gif) no-repeat top;position:absolute; 
z-index:105;}

.tooltip b.bottom{padding:3px 8px 15px;color: #548912;
    background: url(bt.gif) no-repeat bottom;position:absolute; 
z-index:105;}