.tooltip{
width: 200px; color:#fff;
font:lighter 10px tahoma;
text-decoration:none;text-align:left;z-index:9999999999999999999999999 !important; position:absolute}

.tooltip span.top{padding: 5px 5px 0px 12px;
    background: url(bt.gif) no-repeat top}

.tooltip b.bottom{padding:3px 8px 5px 5px;color: #fff;
    background: url(bt.png) no-repeat bottom}