menubooklibrary::MENU_CONFIG_FRONTEND();
     addSubmenuBookLibrary("Settings Frontend");
     break;
 case "config_save_backend":
     menubooklibrary::MENU_CONFIG_BACKEND();
     addSubmenuBookLibrary("Settings Backend");
     break;
 case "about":
     menubooklibrary::MENU_ABOUT();
     addSubmenuBookLibrary("About");
     break;
 case "delete_review":
     menubooklibrary::MENU_DELETE_REVIEW();
     break;
 case "edit_review":
     menubooklibrary::MENU_EDIT_REVIEW();
     break;
 case "update_review":
     menubooklibrary::MENU_EDIT();
     break;
 case "cancel_review_edit":
     menubooklibrary::MENU_EDIT();
     break;
     //**************   begin for manage reviews   *********************
     //**************   end for manage reviews   ***********************
     //**************   begin for manage suggestion    *****************
     //**************   end for manage suggestion    *******************
 //**************   begin for manage reviews   *********************
 //**************   end for manage reviews   ***********************
 //**************   begin for manage suggestion    *****************
 //**************   end for manage suggestion    *******************