ondrag Fires on the source object continuously during a drag operation.
ondragend Fires on the source object when the user releases the mouse at the close of a drag operation.
ondragenter Fires on the target element when the user drags the <DIV> to a valid drop target.
ondragleave Fires on the target object when the user moves the mouse out of a valid drop target during a drag operation.
ondragover Fires on the target element continuously while the user drags the <DIV> over a valid drop target.
ondragstart Fires on the source object when the user starts to drag a text selection or selected object.
ondrop Fires on the target object when the mouse button is released during a drag-and-drop operation.