if (document.images) {

// STANDARD GIFS
    img1off = new Image();
    img1off.src = "img/contact_01.gif";
    img2off = new Image();
    img2off.src = "img/team_01.gif";
    img3off = new Image();
    img3off.src = "img/invest_01.gif";
    img4off = new Image();
    img4off.src = "img/portfolio_01.gif";
    img5off = new Image();
    img5off.src = "img/news_01.gif";
    img6off = new Image();
    img6off.src = "img/contact_01.gif";
    img7off = new Image();
    img7off.src = "img/home_01.gif";
    img8off = new Image();
    img8off.src = "img/print_01.gif";
   

// ROLLOVER GIFS
    img1on = new Image();
    img1on.src = "img/contact_02.gif";
    img2on = new Image();
    img2on.src = "img/team_02.gif";
    img3on = new Image();
    img3on.src = "img/invest_02.gif";
    img4on = new Image();
    img4on.src = "img/portfolio_02.gif";
    img5on = new Image();
    img5on.src = "img/news_02.gif";
    img6on = new Image();
    img6on.src = "img/contact_02.gif";
    img7on = new Image();
    img7on.src = "img/home_02.gif";
    img8on = new Image();
    img8on.src = "img/print_02.gif";
   
}

// Function to 'activate' images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}