Can I implement multiple files to upload files to RichFace or implement a special tag for this with javascript?

I want to implement several files to upload files to RichFace, and I found a demo here .

But if I can implement multiple file selections, as is usually the case on Windows, it will be a good experience for users.

If this is not RichFace support, how can I embed a special tag for this using javascript?

Could you comment on your idea and suggestions?