Close The Light "f" key ?

hi friends I created spot light. "f " key to on light. and again " f " key and close light ?

my script :

function Update () {

    if (Input.GetKeyDown ("f")) {

        var fener_isik : Light = gameObject.Find ("fener").GetComponent (Light);
        fener_isik.enabled = true;

        var button_ses : AudioClip ;

        audio.Play ();

    }

}

You can do this:

if (Input.GetKeyDown ("f")) {

    var fener_isik : Light = gameObject.Find ("fener").GetComponent (Light);
    fener_isik.enabled = !fener_isik.enabled;

    var button_ses : AudioClip ;

    audio.Play ();

}