function jig_detect_ngg_tag($content){
			global $post;
			if($post->post_name == 'ngg_tag'){
				if(preg_match('/ngg_images.*source.*tags.*slug=\'([^\'"]*)\'.*photocrati-nextgen_basic_thumbnails/i', $content, $groups)){
					$tag = $groups[1];
					$content = "[justified_image_grid ng_tags_gallery={$tag}]";
				}else{ // legacy
					preg_match_all('/(?<=data-image-id=")(\d+)(?=")/im', $content, $result, PREG_PATTERN_ORDER);
					$ids = implode(',',$result[0]);
					if(!empty($ids)){
						$content = "[justified_image_grid ng_pics={$ids}]";
					}else{
						return $this->frontend_stop(__("Justified Image Grid couldn't take over NextGEN tags page.", 'jig_td').'<br />'.$content);
					}
				}
			}
			return $content;
		}