a.tooltip {
	position: relative;
	text-decoration: none;
	border-bottom: 1px dashed #aaa;
	cursor: default;
}

a.tooltip span {
	display: none;
}

a.tooltip:hover {
	z-index: 100;
	background: transparent; /* must be set for ie6 */
	text-decoration: none;
}

a.tooltip:hover span {
	display: block;
	position: absolute; 
	top: 1.4em;
	left: 0;
	width: 200px;
	padding: 0.3em;
	text-align: center;
	background: #ffd;
	border: 1px solid black;
	color: black;
}