a.info{
    position:relative; /*this is the key*/
    z-index:24;
    color:#000;
    text-decoration:none;
   }

a.info:hover{z-index:25;background-color:#ffffff;}

a.info span{display: none}

a.info:hover span{
	display:block;
	position:absolute;
	top:2em;
	left:2em;
	width:18em;
	border:1px solid #666666;
	background-color:#FFFFCC;
	color:#333333;
	text-align: left;
	font-size: 10px;
	padding: 2px;
	text-decoration:none;
}