Draggable with cursorAt in percent

[skorpan]

I'd like the "cursorAt" option of draggables to accept positions in percent, much like CSS does. Specifically, I'd like to be able to tell ui.draggable that I want the cursor in the very middle of the elements I drag. I don't think implementing this enhancement would be very difficult (simply checking "typeof" on the value of the property in the settings object).

It would look something like this:

$(something).draggable({ cursorAt: { right: '50%',
                                     left: '50%' }
                       });

[Scott González]

cursorAt should be moved to an extension during the draggable rewrite.