var NN3 = false;
image1= new Image();
image1.src = "images/tlac/septiky_1.gif";
image1on = new Image();
image1on.src = "images/tlac/septiky_2.gif";
image2= new Image();
image2.src = "images/tlac/cerp_1.gif";
image2on = new Image();
image2on.src = "images/tlac/cerp_2.gif";
image3= new Image();
image3.src = "images/tlac/dom_cist_1.gif";
image3on = new Image();
image3on.src = "images/tlac/dom_cist_2.gif";
image4= new Image();
image4.src = "images/tlac/plast1.gif";
image4on = new Image();
image4on.src = "images/tlac/plast2.gif";
image5= new Image();
image5.src = "images/tlac/vodomer1.gif";
image5on = new Image();
image5on.src = "images/tlac/vodomer2.gif";
image6= new Image();
image6.src = "images/tlac/ostatni_1.gif";
image6on = new Image();
image6on.src = "images/tlac/ostatni_2.gif";
image7= new Image();
image7.src = "images/tlac/bal_cist_1.gif";
image7on = new Image();
image7on.src = "images/tlac/bal_cist_2.gif";

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);
}