// use 'add' instead 'new' in J 1.6
     menubooklibrary::MENU_SAVE_BACKEND();
     break;
 case "edit":
     menubooklibrary::MENU_EDIT();
     break;
 case "refetchInfos":
     menubooklibrary::MENU_REFETCH_INFOS();
     break;
     /////////////////////////st5/////////////
 /////////////////////////st5/////////////
 case "Addproduct":
     menubooklibrary::MENU_ADD_TOVAR();
     break;
 case "show_import_export":
     menubooklibrary::MENU_IMPORT_EXPORT();
     addSubmenuBookLibrary("Import/Export");
     break;
 case "lend":
     menubooklibrary::MENU_LEND();
     break;
 case "lend_return":
     menubooklibrary::MENU_LEND_RETURN();
     break;
 case "lend_requests":
     menubooklibrary::MENU_LENDREQUESTS();
     addSubmenuBookLibrary("Lend Requests");
     break;
 case "edit_lend":
     menubooklibrary::MENU_EDIT_LEND();
     addSubmenuBookLibrary("Lend Requests");