Drag And Drop From Image Onto Another Image

I wanted to drag and drop image onto another image. I cannot figure it out.. I want to drag icons image, onto droppable briefcase and the icons will stay there.. my codes.. I want

Solution 1:

Remove the <img> tag in the #briefcase div. Instead, make the background of the div as the image and make its position absolute.

Here's the JSFiddle - you'll have to fix the CSS positioning of the icons, but the main idea is there.