var NN3 = false;
image1= new Image();
image1.src = "images/kompetenz_klein1.jpg";
image1on = new Image();
image1on.src = "images/kompetenz_klein2.jpg";
image2= new Image();
image2.src = "images/anfertigungen_klein1.jpg";
image2on = new Image();
image2on.src = "images/anfertigungen_klein2.jpg";
image3= new Image();
image3.src = "images/maschinenpark_klein1.jpg";
image3on = new Image();
image3on.src = "images/maschinenpark_klein2.jpg";


function on3(name)   {
        document[name].src = eval(name + "on.src");
}
function off3(name)  {
        document[name].src = eval(name + ".src");
}
NN3 = true;

function on(name)  {
        if (NN3) on3(name);
}
function off(name)  {
        if (NN3) off3(name);
}