I'm just learning the basics of jquery and I couldn't find an answer to this question anywhere: If you have a draggable element inside a droppable element and you drag it away to a different location (either to another droppable or to a random location), how do you signal the droppable that the draggable element has been moved? Is an event generated in this case or do you have to manually track the position of the draggable and check if it has left the boundaries of the droppable?