#thumbnail{
    overflow: hidden;
    width: 100%;
}
#thumbnail li{
    float: left;
}
#thumbnail li img{
    width: 100%;
    opacity: 0.5;
    filter: alpha(opacity=50); 
}
#thumbnail li.current img{
    opacity: 1;
    filter: alpha(opacity=100);
}
#main_photo{
    position: relative;
    height: 550px;
}
#main_photo img{
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}