";
//if didn't choose the chapter or photo, you will be display chapter list
if (!isset($ch_id) && !isset($photo_id)){
echo $header;
$a->list_chapters();
$a->set_url($url);
echo"
Back to main page |
";
}
//if the chapter is selected, display the small photo of that chapter
if (isset($ch_id)){
echo $header;
$b = new Chapter($ch_id, $book_id, $ch_name, $display_order, $status, $DBC);
$b->set_url($url);
$b->list_photos();
echo"