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// photo display
if (!isset($gal) or trim($gal)=='') {
$gal = 1; }
if (!isset($pic) or trim($pic)=='') {
$pic = 1; }
$dir= "gallery".$gal;
@$d = dir($dir);
if ($d) {
while($entry=$d->read()) {
$entry = preg_replace("/ /","%20",$entry);
$pos = strpos (strtolower($entry), ".jpg");
if (!($pos === false)) {
$arr_pic[] = $dir."/".$entry; } }
$d->close(); }
@sort ($arr_pic);
$total = sizeof($arr_pic);
echo " ";
?>
// navigation display
if ( $pic<2) {
$prev_url="?gal=".$gal."&pic=1";
} else {
$prev_url='?gal='.$gal.'&pic='.($pic-1); }
if ( $pic+1>$total) {
$next_url="?gal=".$gal."&pic=".$pic;
} else {
$next_url='?gal='.$gal.'&pic='.($pic+1); }
if ( $pic-10<1) {
$skip_back_url='?gal='.$gal.'&pic=1';
} else {
$skip_back_url='?gal='.$gal.'&pic='.($pic-10); }
if ( $pic+10>$total) {
$skip_url='?gal='.$gal.'&pic='.$total;
} else {
$skip_url='?gal='.$gal.'&pic='.($pic+10); }
echo "Previous Image | ";
echo $pic." of ".$total." | ";
echo "Next Image";
?>
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