a#prev_button:link, a#prev_button:active, a#prev_button:visited {
  display: block;
  width: 220px;
  height: 120px;
  background-image: url('count2.png');
  background-repeat: no-repeat;
  text-indent: -9999px;
  border-bottom:0;
}	
a#prev_button:hover {
  background-position: -220px;
  border-bottom:0;
  background-color:#ffffe5;
}