// query strings
$query_string = '?in_wp='.$in_wp.'&return_function='.$return_f unction.'&lang='.$lang_include.'&folder='. $folderpath.'&instance_img_dir='.$instance_img _dir.'&sort_by='.$sort_by.'&sort_dir='.$so rt_dir.'&thumbnails='.$doThumbs;
$query_inputs = '<input type="hidden" name="lang" value="'.$lang_include.'">
<input type="hidden" name="return_function" value="'.$return_function.'">
<input type="hidden" name="folder" value="'.$folderpath.'">
<input type="hidden" name="instance_img_dir" value="'.$instance_img_dir.'">
<input type="hidden" name="in_wp" value="'.$in_wp.'">
<input type="hidden" name="sort_by" value="'.$sort_by.'">
<input type="hidden" name="sort_dir" value="'.$sort_dir.'">
<input type="hidden" name="thumbnails" value="'.$doThumbs.'">';