#slideshow {
   position: relative;
   width:  800px; 
   height: 454px; 
}

#slideshow img {
   position: absolute;
   top: 0;
   left:0;
   z-index: 8;
   opacity: 0.0;
}

#slideshow img.active {
   z-index: 10;
   opacity: 1.0;
}

#slideshow img.last-active {
   z-index: 9;
}