.stars div a {
  background: transparent url(sprite_rate.png) 0 0 no-repeat;
  display: inline-block;
  height: 23px;
  width: 12px;
  text-indent: -999em;
  overflow: hidden;
}

.stars a.rating-right {
  background-position: 0 -23px;
}

.stars a.rating-over {
  background-position: 0 -46px;
}

.stars a.rating-over.rating-right {
  background-position: 0 -69px;
}

.stars a.rating {
  background-position: 0 -92px;
}

.stars a.rating.rating-right {
  background-position: 0 -115px;
}