if (document.images) {            // Active Images
            img1on = new Image();      
            img1on.src = "images/home-on.jpg";

            img1off = new Image(); 
            img1off.src = "images/home.jpg";        }

// Function to 'activate' images.
function imgOn(img1) {
        if (document.images) {
            document[img1].src = eval(img1 + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(img1) {
        if (document.images) {
            document[img1].src = eval(img1 + "off.src");
        }
}

// -->

if (document.images) {            // Active Images
            img2on = new Image();      
            img2on.src = "images/about-on.jpg";

            img2off = new Image(); 
            img2off.src = "images/about.jpg";        }

// Function to 'activate' images.
function imgOn(img2) {
        if (document.images) {
            document[img2].src = eval(img2 + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(img2) {
        if (document.images) {
            document[img2].src = eval(img2 + "off.src");
        }
}

// -->

if (document.images) {            // Active Images
            img3on = new Image();      
            img3on.src = "images/contact-on.jpg";

            img3off = new Image(); 
            img3off.src = "images/contact.jpg";        }

// Function to 'activate' images.
function imgOn(img3) {
        if (document.images) {
            document[img3].src = eval(img3 + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(img3) {
        if (document.images) {
            document[img3].src = eval(img3 + "off.src");
        }
}

// -->

if (document.images) {            // Active Images
            img4on = new Image();      
            img4on.src = "images/products-on.jpg";

            img4off = new Image(); 
            img4off.src = "images/products.jpg";        }

// Function to 'activate' images.
function imgOn(img4) {
        if (document.images) {
            document[img4].src = eval(img4 + "on.src");
        }
}

// Function to 'deactivate' images.
function imgOff(img4) {
        if (document.images) {
            document[img4].src = eval(img4 + "off.src");
        }
}

// -->