To begin with I'd like to be able to create, resize and move a box (like the blue background in the screenshot) using a mouseclick.
I've been looking at the canvas tag but that seems to be used more for graphics. Mindmeister uses a lot of DIVS and as I'm going to draw boxes I think that's the way to go.
I'm not looking for a library to do this for me, but a simple and well documented one would of course help me learn.
Has anyone an idea how to do this?