if (document.images) {            // Active Images

            homeon = new Image();
            homeon.src = "/_img/home_1.jpg";
            biographieon = new Image();
            biographieon.src = "/_img/biographie_1.jpg";
            unterrichton = new Image();
            unterrichton.src = "/_img/unterricht_1.jpg";
            leihinstrumenton = new Image();
            leihinstrumenton.src = "/_img/leihinstrument_1.jpg";
            hoerprobenon = new Image();
            hoerprobenon.src = "/_img/hoerproben_1.jpg";
            kontakton = new Image();
            kontakton.src = "/_img/kontakt_1.jpg";
            gaestebuchon = new Image();
            gaestebuchon.src = "/_img/gaestebuch_1.jpg";
            impressumon = new Image();
            impressumon.src = "/_img/impressum_1.jpg";

            homeoff = new Image();
            homeoff.src = "/_img/home_0.jpg";
            biographieoff = new Image();
            biographieoff.src = "/_img/biographie_0.jpg";
            unterrichtoff = new Image();
            unterrichtoff.src = "/_img/unterricht_0.jpg";
            leihinstrumentoff = new Image();
            leihinstrumentoff.src = "/_img/leihinstrument_0.jpg";
            hoerprobenoff = new Image();
            hoerprobenoff.src = "/_img/hoerproben_0.jpg";
            kontaktoff = new Image();
            kontaktoff.src = "/_img/kontakt_0.jpg";
            gaestebuchoff = new Image();
            gaestebuchoff.src = "/_img/gaestebuch_0.jpg";
            impressumoff = new Image();
            impressumoff.src = "/_img/impressum_0.jpg";

        }

// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}