Makes stuff draggable, when you don't feel like loading jQueryUI.
new DraggableContainer(someID, [overlapY, overlapX]);
someID:string: The ID of an element, the children of which you want to become draggable.overlapY:integer: The amount a draggable element should be able to overlap the top and bottom borders of its parent. Defaults to 0.overlapX:integer: The amount a draggable element should be able to overlap the left and right borders of its parent. Defaults to 0.