What it is?

Upload files via flash to get the flash-upload dialog goodness.

• Only display chosen filetypes in dialog
• Upload multiple files at once by ctrl/shift-selecting in dialog
• Trigger javascript functions on start, cancel, progress and complete
• Get file information/size before upload starts
• Style upload buttons any way you want
• Do progress-bars/information using valid XHTML and CSS
• No page reloads, display uploaded files as they are finished
• Works on all platforms/browsers that has Flash support.
• Degrades gracefully to a normal html upload form if Flash or javascript isn’t available.

You can check it out more about if from here:
http://labb.dev.mammon.se/swfupload/