下载了joomla SWFUpload zip文件，找不到所需的代码文件

Question

我按照页面http://docs.joomla.org/Creating_a_file_uploader_in_your_component

的说明操作

我下载了SWFUpload version2.2.0核心，但我找不到所需的文件，即以下代码中的文件：

$document->addScript($host.'administrator/components/com_mycomponent/swfupload/swfupload.js');
$document->addScript($host.'administrator/components/com_mycomponent/swfupload/swfupload.queue.js');
$document->addScript($host.'administrator/components/com_mycomponent/swfupload/fileprogress.js');
$document->addScript($host.'administrator/components/com_mycomponent/swfupload/handlers.js');
$document->addStyleSheet($host.'administrator/components/com_mycomponent/swfupload/default.css');

谢谢！