/* tooltip styles */
div#tooltip {
   position:absolute;
   visibility:hidden;
   z-index:100;
   background-color:#ffffff;
   border:1px solid #B1B1B1;
   padding:0.2em 5px 0.2em 5px;
   font-size:11px;
   color:#000000;
   font-weight:bolder;
}