if ( document.images )
      {
//        var actualite_off = new Image();
//        actualite_off.src = "_images/_interfaces/jred1/boutons/actualite-off.png";
        var actualite_on = new Image();
        actualite_on.src = "_images/_interfaces/jred1/boutons/actualite-on.png";

//        var biographie_off = new Image();
//        biographie_off.src = "_images/_interfaces/jred1/boutons/biographie-off.png";
        var biographie_on = new Image();
        biographie_on.src = "_images/_interfaces/jred1/boutons/biographie-on.png";

//        var discographie_off = new Image();
//        discographie_off.src = "_images/_interfaces/jred1/boutons/discographie-off.png";
        var discographie_on = new Image();
        discographie_on.src = "_images/_interfaces/jred1/boutons/discographie-on.png";

//        var radio_off = new Image();
//        radio_off.src = "_images/_interfaces/jred1/boutons/radio-off.png";
        var radio_on = new Image();
        radio_on.src = "_images/_interfaces/jred1/boutons/radio-on.png";

//        var photos_off = new Image();
//        photos_off.src = "_images/_interfaces/jred1/boutons/photos-off.png";
        var photos_on = new Image();
        photos_on.src = "_images/_interfaces/jred1/boutons/photos-on.png";

//        var videos_off = new Image();
//        videos_off.src = "_images/_interfaces/jred1/boutons/videos-off.png";
        var videos_on = new Image();
        videos_on.src = "_images/_interfaces/jred1/boutons/videos-on.png";

//        var forum_off = new Image();
//        forum_off.src = "_images/_interfaces/jred1/boutons/forum-off.png";
        var forum_on = new Image();
        forum_on.src = "_images/_interfaces/jred1/boutons/forum-on.png";

//        var chat_off = new Image();
//        chat_off.src = "_images/_interfaces/jred1/boutons/chat-off.png";
        var chat_on = new Image();
        chat_on.src = "_images/_interfaces/jred1/boutons/chat-on.png";

//        var livredor_off = new Image();
//        livredor_off.src = "_images/_interfaces/jred1/boutons/livredor-off.png";
        var livredor_on = new Image();
        livredor_on.src = "_images/_interfaces/jred1/boutons/livredor-on.png";

//        var liens_off = new Image();
//        liens_off.src = "_images/_interfaces/jred1/boutons/liens-off.png";
        var liens_on = new Image();
        liens_on.src = "_images/_interfaces/jred1/boutons/liens-on.png";

//        var fleche_off = new Image();
//        fleche_off.src = "_images/_interfaces/jred1/titles/arrow-off.png";
        var fleche_on = new Image();
        fleche_on.src = "_images/_interfaces/jred1/titles/arrow-on.png";

//        var top_off = new Image();
//        top_off.src = "_images/_interfaces/jred1/top-off.png";
        var top_on = new Image();
        top_on.src = "_images/_interfaces/jred1/top-on.png";

//        var a_propos_off = new Image();
//        a_propos_off.src = "_images/_interfaces/jred1/apropos-off.png";
        var a_propos_on = new Image();
        a_propos_on.src = "_images/_interfaces/jred1/apropos-on.png";

//        var gibiosh_studio_off = new Image();
//        gibiosh_studio_off.src = "_images/_interfaces/jred1/gibiosh_studio-off.png";
        var gibiosh_studio_on = new Image();
        gibiosh_studio_on.src = "_images/_interfaces/jred1/gibiosh_studio-on.png";

//        var login_off = new Image();
//        login_off.src = "_images/_interfaces/jred1/login-off.png";
        var login_on = new Image();
        login_on.src = "_images/_interfaces/jred1/login-on.png";

//        var logout_off = new Image();
//        logout_off.src = "_images/_interfaces/jred1/logout-off.png";
        var logout_on = new Image();
        logout_on.src = "_images/_interfaces/jred1/logout-on.png";
      }

      // fin mise en cache des images