define('THUMB_SIZE', 100);
 define('DATA_DIR', 'data');
 define('IMAGES_DIR', 'images');
+define('USE_VIEWER', true);
 
 function getPreview($imgFile, $maxSize = THUMB_SIZE)
 {
        else
        {
                $ext = strtolower(substr($file, -4));
-               if ($ext == ".jpg" or $ext == ".png")
-                       $imageFiles[] = array( "name" => $file, "url" => getPreview("$realDir/$file"), "link" => dirname($scriptUrlPath)."/view.php$shortPath/$file" );
-               else
+               if ($ext == ".jpg" or $ext == ".png") {
+                       if (USE_VIEWER)
+                               $link = dirname($scriptUrlPath)."/view.php$shortPath/$file";
+                       else
+                               $link = dirname($scriptUrlPath)."/$realDir/$file";
+
+                       $imageFiles[] = array( "name" => $file, "url" => getPreview("$realDir/$file"), "link" => $link );
+
+               } else {
                        $otherFiles[] = array( "name" => $file, "link" => dirname($scriptUrlPath)."/$realDir/$file" );
+               }
        }
 }