/* remove the F2 key from the keyboard bindings of the JTree */
InputMap inputMap = getInputMap();
KeyStroke keyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_F2, 0);
inputMap.put(keyStroke, "none");
new OverlayListener(this);
(new DragSource()).createDefaultDragGestureRecognizer(this,
DnDConstants.ACTION_MOVE, this);
new DropTarget(this, this);
}