/**
  * change contact form ajax loader
  * @hook wpcf7_ajax_loader
  */
 public function _hw_wpcf7_change_ajax_loader($src)
 {
     $ajax_loader = hw_wpcf7_option('loadingImg');
     if (count($ajax_loader)) {
         $ajax_loader = HW_APF_Field::get_skin_link($ajax_loader);
     } else {
         $ajax_loader = get_template_directory_uri() . '/images/ajax-loader.gif';
     }
     return $ajax_loader;
     //change ajax loading for wpcf7
 }
 /**
  * enqueue wpcf7 resource
  */
 public function _hw_add_wpcf7_scripts()
 {
     $exclude = hw_wpcf7_option('exclude_pages');
     if (is_page($exclude) && function_exists('wpcf7_enqueue_scripts')) {
         //wpcf7 js only for thoes pages
         wpcf7_enqueue_scripts();
     }
 }