Pasting an image from clipboard to a website

I need to come up with a solution for users to be able to paste an image on to a website, then upload that image on to the web server. I'm not sure what the right solution for this - I am pretty sure javascript is out of the question because I don't think it can handle binary clipboard data (or any clipboard data?)

So, I'm not sure which way to go with this. Is this something possible with a Java applet? Or maybe a Flash SWF? Any other alternatives?

From stackoverflow

• Rad Upload (java applet). It's not free, but it is relatively cheap.

• Or this free one (via another StackOverflow question)