var NN3 = false;
image1alt = new Image();
image1alt.src = "images/choose-a-product.png";
image1alton = new Image();
image1alton.src = "images/brochures.png";
image2alt = new Image();
image2alt.src = "images/choose-a-product.png";
image2alton = new Image();
image2alton.src = "images/catalogs-booklets.png";
image3alt = new Image();
image3alt.src = "images/choose-a-product.png";
image3alton = new Image();
image3alton.src = "images/magazines.jpg";
image4alt = new Image();
image4alt.src = "images/choose-a-product.png";
image4alton = new Image();
image4alton.src = "images/phone-directories.jpg";
image5alt = new Image();
image5alt.src = "images/choose-a-product.png";
image5alton = new Image();
image5alton.src = "images/proclamations.png";

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