flash上传，带进度条，支持上移下移，多图片同时上传-flash upload with progress bar to support the move down, and more uploading pictures at the same time! !

网页上传文件,asp.net环境下使用，支持文件类型选择、预览、取消上传。界面优美。-Web upload files, asp.net environment, supported file type selection, preview, cancel the upload. Beautiful interface.