On this site how do 你 上传 multiple pics at once?

1. Click on add image.
2. Under where it says Add a new image there's a link in tiny blue font that says This app requires Flash Player 9 或者 10. Click it.

when 你 are browsing they have to bee 由 eachother and 你 shift+click from the first to last one and it will add them all.