basic functions : a multiple files to upload. Allowing the documents to be uploaded to the original file name and file name can be credited to the server. Upload allow each document set the total size of individual files and the file size. Can only be allowed to set the file extension from the list. Can only be allowed to set the file type list. (Note : file format, rather than suffix analysis more accurate.) Whether the coverage can set the server name on the document. All documents can be uploaded to a folder, programmers can also demand documents classified into different folders. -err