def bdNodes( bdNode ):
    origSel = nuke.selectedNodes() # STORE CURRENT SELECTION
    bdNode.selectNodes()  # SELECT NODES IN BACKDROP
    bdNodes = nuke.selectedNodes() # STORE NODES
    # RESTORE PREVIOUS SELECTION:
    bdNode.selectNodes( False )
    [ n.setSelected( True ) for n in origSel ]

     return bdNodes