$nextImage = '';
if ($pos > 0)
$prevImage = $images[$pos-1];
-if ($pos < sizeof($images))
+if ($pos < sizeof($images)-1)
$nextImage = $images[$pos+1];
// template variables
if ($prevImage === '') $prevPageUrl = '';
else $prevPageUrl = dirname($_SERVER["REQUEST_URI"])."/$prevImage";
-$directoryUrl = dirname($_SERVER["SCRIPT_NAME"])."/index".dirname($shortPath);
+$directoryUrl = dirname($_SERVER["SCRIPT_NAME"])."/index.php".dirname($shortPath);
header('Content-Type: text/html; charset=utf-8');
header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 3600));