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/*
* Find a list of images in /images and provide thumbnails
*/
function get_table ( $limit_start = 0, $limit_step = 5 ) {
$images = get_image_list('images');

// Generate navigation for Previous and Next buttons
// Code given below

$output .= '

// Begin directory listing at item number $limit_start
if ( $index < $limit_start ) continue;

// End directory listing at item number $limit_end
if ( $index >= $limit_start + $limit_step ) continue;

// Begin column
if ( $index - $limit_start % $columns == 0 ) {
$output .= '

// Generate link to blown up image (see below)
$thumbnail = '';
$output .= '

function get_image_list ( $image_dir ) {
$d = dir($image_dir);
$files = array();
if ( !$d ) return null;

while (false !== ($file = $d->read())) {
// getimagesize returns true only on valid images
if ( @getimagesize( $image_dir . '/' . $file ) ) {
$files[] = $file;
}
}
$d->close();
return $files;
}