Working on the drag and drop version

In these days I'm working to implement the drag and drop version of the card sorting user interface.
I've made a first try some months ago, but the results weren't satisfactory.
Now I'm using the beautiful YUI as a framework for JavaScript and AJAX.

Thanks to it's Drag & Drop Utility a stylish and usable drag and drop interface seems easy to implement.

I'll update this post when the new interface will be terminated.