The Drag-and-drop Java Script library enables easy-to-do dragging and dropping of elements in your web application and to do sortable lists and floats.
Use Draggables (elements that can be dragged) and Droppables (elements that can be dropped on) to add rich user interactivity to your web site or web application.
Use Sortables (container elements whose child elements can be sorted) to make lists (HTML elements LI and OL) and floating images or DIVs inside a container div sortable.