if (navigator.appVersion.indexOf("2.") != -1){
        check = false;
        }
if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1)){
        check = false;
        }
else {
        check = true;
        }
if (check == true){
        image1 = new Image();
        image1.src = "images/wir.gif";
        image1on = new Image();
        image1on.src = "images/wir_a.gif";
        image1stay = new Image();
        image1stay.src = "images/wir_a.gif";

        image2 = new Image();
        image2.src = "images/heizen.gif";
        image2on = new Image();
        image2on.src = "images/heizen_a.gif";
        image2stay = new Image();
        image2stay.src = "images/heizen_a.gif";

        image3 = new Image();
        image3.src = "images/wp.gif";
        image3on = new Image();
        image3on.src = "images/wp_a.gif";
        image3stay = new Image();
        image3stay.src = "images/wp_a.gif";

        image4 = new Image();
        image4.src = "images/solar.gif";
        image4on = new Image();
        image4on.src = "images/solar_a.gif";
        image4stay = new Image();
        image4stay.src = "images/solar_a.gif";

        image5 = new Image();
        image5.src = "images/sonst.gif";
        image5on = new Image();
        image5on.src = "images/sonst_a.gif";
        image5stay = new Image();
        image5stay.src = "images/sonst_a.gif";

        image6 = new Image();
        image6.src = "images/refer.gif";
        image6on = new Image();
        image6on.src = "images/refer_a.gif";
        image6stay = new Image();
        image6stay.src = "images/refer_a.gif";

        image7 = new Image();
        image7.src = "images/service.gif";
        image7on = new Image();
        image7on.src = "images/service_a.gif";
        image7stay = new Image();
        image7stay.src = "images/service_a.gif";

        image8 = new Image();
        image8.src = "images/kontakt.gif";
        image8on = new Image();
        image8on.src = "images/kontakt_a.gif";
        image8stay = new Image();
        image8stay.src = "images/kontakt_a.gif";
}

imageStay = ""

function imageon(name){
        if (imageStay != name){
                document[name].src = eval(name + "on.src");
        }
}
function imageoff(name){
        if (imageStay != name){
                document[name].src = eval(name + ".src");
        }
}

function on(name){
        if (check == true){
        imageon(name);
        }
}
function off(name){
        if (check == true){
        imageoff(name);
        }
}

function stay(name){
        if (check == true){
        document[name].src = eval(name + "stay.src");
        if (imageStay != name){
                if (imageStay != ""){
                        document[imageStay].src = eval(imageStay + ".src");
                }
        }
        imageStay = name
        }
}