div#links {position: absolute; top: 81px; left: 0; width: 80px; height: 700px; font: 11px Verdana, sans-serif; 

z-index: 100;}
div#links a {display: block; text-align: center; font: bold 12px sans-serif; 
   padding: 5px 10px; margin: 0 0 1px; border-width: 0; 
   text-decoration: none; color: #FFC; background: #444;
   border-right: 5px solid #505050;}
div#links a:visited {display: block; text-align: center; font: bold 1em sans-serif; 
   padding: 5px 10px; margin: 0 0 1px; border-width: 0; 
   text-decoration: none; color: #FFC; background: #444;
   border-right: 5px solid #505050;}
div#links a:hover {color: #411; background: #AAA;
   border-right: 5px double white;}

div#links a span {display: none;}
div#links a:hover span {display: block;
   position: absolute; top: 170px; left: 0; width: 70px;
   padding: 5px; margin-top:15px; z-index: 100;
   color: #AAA; background: black;
   font: 10px Verdana, sans-serif; text-align: center;}