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"); break; case "import": menubooklibrary::MENU_CANCEL(); break; case "export": menubooklibrary::MENU_CANCEL(); break; case "config_frontend": menubooklibrary::MENU_CONFIG_FRONTEND(); addSubmenuBookLibrary("Settings Frontend"); break; case "config_backend": menubooklibrary::MENU_CONFIG_BACKEND(); addSubmenuBookLibrary("Settings Backend"); break; case "config_save_frontend": menubooklibrary::MENU_CONFIG_FRONTEND(); addSubmenuBookLibrary("Settings Frontend"); break; case "config_save_backend": menubooklibrary::MENU_CONFIG_BACKEND();