.rating_bar {
  width: 55px;
  background: url(http://www.tietoportti.com/images/star_grey.gif) 0 0 repeat-x;
}

.rating_bar div {
  height: 12px;
  background: url(http://www.tietoportti.com/images/star_orange.gif) 0 0 repeat-x;
}