This example shows how to make DragDrop only fire the onDragDrop event. It will not fire the other stamdard events.
Basically all we are doing is creating a copy of the
YAHOO.util.DragDropMgr._fireEvents) method and creating a new one.
Now, we put some simple logic in the new
fireEvents method to call the copy
_fireEvents only if the
isDrop parameter is set to true.