div#tipDiv {
  position:absolute; visibility:hidden; left:0; top:0; z-index:10000;
  background-color:#fff; border:1px solid #666; 
  width:200px; padding:6px;
  color:#000; font-size:11px; line-height:1.3;
}

div#tipDiv div.img { text-align:center }
div#tipDiv div.txt { text-align:center; margin-top:4px }

a.st .img{width:68px;height:58px;overflow:hidden;}
a.st .img img{width:60px;height:50x;}
a.st:hover .img{width:60px;height:50px;overflow:visible;visibility:hidden;}
a.st:hover .img img{visibility:visible;width:120px;height:100px;position:absolute;z-index:150;}