public void addShutDownScript(String pathname){
  _shutDownScripts.add(pathname);
  setDirtyAndFirePropertyChange("addShutDownScript",pathname,null);
}

public void addShutDownScript ( String pathname ) { _shutDownScripts . add ( pathname ) ; setDirtyAndFirePropertyChange ( "addShutDownScript" , pathname , null ) ; }
add a script to run at shutdown
