if (document.images) {

    homeon = new Image;
    homeon.src = "/common/images/buttons/home_roll.gif";
    about_uson = new Image;
    about_uson.src = "/common/images/buttons/about_roll.gif";
    producton = new Image;
    producton.src = "/common/images/buttons/product_roll.gif";
    quality_controlon = new Image;
    quality_controlon.src = "/common/images/buttons/quality_roll.gif";
    distributorson = new Image;
    distributorson.src = "/common/images/buttons/dist_roll.gif";
    contact_uson = new Image;
    contact_uson.src = "/common/images/buttons/contact_roll.gif";
    
    homeoff = new Image;
    homeoff.src = "/common/images/buttons/home.gif";
    about_usoff = new Image;
    about_usoff.src = "/common/images/buttons/about.gif";
    productoff = new Image;
    productoff.src = "/common/images/buttons/product.gif";
    quality_controloff = new Image;
    quality_controloff.src = "/common/images/buttons/quality.gif";
    distributorsoff = new Image;
    distributorsoff.src = "/common/images/buttons/dist.gif";
    contact_usoff = new Image;
    contact_usoff.src = "/common/images/buttons/contact.gif";

}


function imgAct(imgName) {

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

function imgInact(imgName) {

    imgOff = eval(imgName + "off.src");
    document [imgName].src = imgOff;

}