div.ac_results ul { 
  margin:0; 
  padding:0; 
  list-style-type:none; 
  border: solid 1px #ccc; 
} 

div.ac_results ul li { 
  font-family: Arial, Verdana, Sans-Serif; 
  font-size: 12px; 
  margin: 1px; 
  padding: 3px; 
  cursor: pointer; 
  background-color:Gray;
} 

div.ac_results ul li.ac_over { 
  background-color:Gray; 
  color:Orange;
}