.tooltip{
    width: 150px; 
	color:#000;
    font:lighter 11px/1.3 Arial,sans-serif;
    text-decoration:none;
	text-align:center;
	filter: Alpha(Opacity=80);
	opacity: 0.8;
}

.tooltip span.top{
    padding: 20px 8px 0px;
    background: url(../images/bt.gif) no-repeat top;
}

.tooltip span.bottom{
    padding:3px 8px 25px 8px;
    color: #36580C;
    background: url(../images/bt.gif) no-repeat bottom;
}