meniu_1lton = new Image();     
meniu_1lton.src = "img/top1lt_on.gif";
meniu_2lton = new Image();     
meniu_2lton.src = "img/top2lt_on.gif";
meniu_3lton = new Image();     
meniu_3lton.src = "img/top3lt_on.gif";

meniu_1ltoff = new Image();     
meniu_1ltoff.src = "img/top1lt.gif";
meniu_2ltoff = new Image();     
meniu_2ltoff.src = "img/top2lt.gif";
meniu_3ltoff = new Image();     
meniu_3ltoff.src = "img/top3lt.gif";

meniu_1enon = new Image();     
meniu_1enon.src = "img/top1en_on.gif";
meniu_2enon = new Image();     
meniu_2enon.src = "img/top2en_on.gif";
meniu_3enon = new Image();     
meniu_3enon.src = "img/top3en_on.gif";

meniu_1enoff = new Image();     
meniu_1enoff.src = "img/top1en.gif";
meniu_2enoff = new Image();     
meniu_2enoff.src = "img/top2en.gif";
meniu_3enoff = new Image();     
meniu_3enoff.src = "img/top3en.gif";

function img_act(imgName) {
        imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;
}

function img_inact(imgName) {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
}