.tooltip {
    width: 160px; color:#000;
    font:lighter 11px/1.3 Arial,sans-serif;
    text-decoration:none;text-align:left;
}
.tooltip span.top {
    padding: 5px 0 0;
    background: url(/images/gradient.gif) no-repeat top
}
.tooltip b.bottom {
    padding: 3px 3px 10px;
    background: url(/images/gradient.gif) no-repeat bottom
}
.tooltip-pad {
    padding-left:12px;
    padding-right:8px;
}