Drag and Drop Coding

Using an old javascript to create a drag and drop set vo images on this page - carrotmuseum - facemaker.html - it does not work in tablets or smartphone on android. Help!

What exactly do you need help with?
As for tablets etc, touch screen devices have events different from mouse events. You can read on them here:

I need it to work on both pc screens and touch screens. Is that possible?

At the moment on the pc screen I can left click and drag and drop an item (or several) to create a combination image. There is no effect on a touch screen.