/*** set the width and height to match your images **/

.header-image #slideshow {
    position:relative;
    height:250px;
}

.header-image #slideshow A {
    position:absolute;
    top:0;
    left:0;
    z-index:8;
    opacity:0.0;
}

.header-image #slideshow A.active {
    z-index:10;
    opacity:1.0;
}

.header-image #slideshow A.last-active {
    z-index:9;
}