a.tip 	{   
  text-decoration: none;
  /* border-bottom: 1px dashed #66750D; */
}

a:hover.tip {
  position: relative;
}
a.tip span {
  display: none;
}
a:hover.tip span {   
  display: block;
  position: absolute;
  top: 10px; 
  left: 0;
  padding: 5px; 
  margin: 10px;
  z-index: 100;      
  background: #f0f0f0; 
  border: 1px dotted #c0c0c0;
  opacity: 0.9;  
  color:#66750D;
  width:130px;
  font-size:11px;
}