div#slideshow{
  width: 641px;
  height: 172px;
  float: left;
  display: inline;
  position: relative;
  margin-top: 6px;
  margin-left: 7px;
}

div#slideshow img{
    position:absolute;
    top:0;
    left:0;
    z-index:7;
    opacity:0.0;
}

#slideshow IMG.active {
    z-index:9;
    opacity:1.0;
}

#slideshow IMG.last-active {
    z-index:8;
}