private function _isDuplicateScript ($path) {
		$result = '';
		$allGroupItems = & self::$scriptsGroupContainer[$this->getCtrlActionKey()];
		foreach ($allGroupItems as $groupName => $groupItems) {
			foreach ($groupItems as $item) {
				if ($item->path == $path) {
					$result = $groupName;
					break;
				}
			}
		}
		return $result;
	}