#horizontal_carousel .previous_button {
  float:left;  
  width: 24px;
  height: 24px;
  background: url(../img/btn_arw_left.gif) no-repeat 0 0;
  z-index: 100;
  cursor: pointer;
}

#horizontal_carousel .previous_button_over {
  background: url(../img/btn_arw_left.gif) no-repeat -24px 0;
}

#horizontal_carousel .previous_button_disabled {
  background: url(../img/btn_arw_left.gif) no-repeat -48px 0;
  cursor: default;
}

#horizontal_carousel .next_button {
  float:right;  
  width: 24px;
  height: 24px;
  background: url(../img/btn_arw_right.gif) no-repeat 0 0;
  z-index: 100;
  cursor: pointer;
}

#horizontal_carousel .next_button_over {
  background: url(../img/btn_arw_right.gif) no-repeat -24px 0;
}

#horizontal_carousel .next_button_disabled {
  background: url(../img/btn_arw_right.gif) no-repeat -48px 0;
  cursor: default;
}