a.info{
     position:relative; /*this is the key*/
     z-index:24; background-color:#ffffff;
     color:#006699;
     text-decoration:underline;} 
a.info:hover{z-index:25; background-color:#ff0} 
a.info span{display: none} 
a.info:hover span
{ /*the span will display just on :hover state*/
     display:block;
     position:absolute;
     top:1.9em; left:-1.75em; width:22.5em;
     border:1px solid #33F;
     background-color:#F0FFFF; color:#000;
     padding-left: 4px; 
     padding-top: 2px;
     padding-bottom: 5px;
     text-align: left;
    font-size:86%;
    text-decoration: none;;
}
   li{text-align:left; margin:.6em; list-style:none; font-size:11pt;
}