.tp {position: relative;text-indent: 0;}
.tp b {color: #90f;cursor: help;font-weight: normal;display: inline-block;}
.tp b span {display: none;}
.tp b:hover {color: red;}
.tp b:hover span {
   background: #ffffff;
   color: #000000;
   display: block;
   padding: 7px;
   position:absolute;
   top: -5px;
   left: 10px;
   z-index: 10;
   text-align: left;
   width: 180px;
   border: 1px solid #999999;
}
.tp strong {background-color: #ffffff;color: red;font-weight: bold;}