var listen:Function = switcher( this, handle, FlexEvent.CREATION_COMPLETE, FlexEvent.PREINITIALIZE, FlexEvent.INITIALIZE );
    listen( true ); //Adds listener "handle" to CREATION_COMPLETE, PREINITIALIZE, INITIALIZE events
    listen( false );    //Removes them
//Or
var listen:Function = switcher( this, FlexEvent.CREATION_COMPLETE, handleCreationComplete,
                      FlexEvent.PREINITIALIZE, handlePreInitialize,
                      FlexEvent.INITIALIZE, handleInitialize,
                      false, 0, true ); //capture = false, priority = 0, weakReference = true
    listen( true );     //Adds handleCreationComplete => CREATION_COMPLETE, handlePreInitialize => PREINITIALIZE etc.
    listen( false );    //Removes them