#holder {margin:20px auto;}
#galleryh {padding:0; list-style-type:none; overflow:hidden; width:70%; height:240px; border:1px solid #888; background:#fff url(bilder/aaa.jpg);
}
#galleryh li {
float:left;
}
#galleryh li a {
display:block; height:240px;
width:28px; float:left; text-decoration:none; border-right:1px solid #fff; cursor:default;
}
#galleryh li a img {
width:28px; height:240px;
border:0;
}
#galleryh li a:hover {
width:320px;
background:#fff url(bilder/aaa.jpg)}
#galleryh li a:hover img {
height:240px; width:auto;
}