How to receive php image data over copy-n-paste javascript with XMLHttpRequest

Question

I try to make an image-upload functionality similar to the one GMail uses. You copy (CTRL-C) an image from your desktop and paste (CTRL-V) it onto the website. The image is

Answer 1

I guess the file is in the $_FILE array not in the $_POST since it is a file. If not, you may convert the image to a string an send the imagestring as GET request.