if (document.images) {            // Active Images
            img1on = new Image();      
            img1on.src = "/design/mss/images/consult2.gif";

            img2on = new Image();      
            img2on.src = "/design/mss/images/safety2.gif";

            img3on = new Image();      
            img3on.src = "/design/mss/images/project2.gif";

            img4on = new Image();      
            img4on.src = "/design/mss/images/health2.gif";

            img5on = new Image();      
            img5on.src = "/design/mss/images/environ2.gif";

            img6on = new Image();      
            img6on.src = "/design/mss/images/fire2.gif";

            img7on = new Image();      
            img7on.src = "/design/mss/images/asbestos2.gif";

            img8on = new Image();      
            img8on.src = "/design/mss/images/client2.gif";

            img9on = new Image();      
            img9on.src = "/design/mss/images/links2.gif";

            img10on = new Image();      
            img10on.src = "/design/mss/images/news2.gif";


            img1off = new Image(); 
            img1off.src = "/design/mss/images/consult1.gif";

            img2off = new Image(); 
            img2off.src = "/design/mss/images/safety1.gif";

            img3off = new Image(); 
            img3off.src = "/design/mss/images/project1.gif";

            img4off = new Image(); 
            img4off.src = "/design/mss/images/health1.gif";

            img5off = new Image(); 
            img5off.src = "/design/mss/images/environ1.gif";

            img6off = new Image(); 
            img6off.src = "/design/mss/images/fire1.gif";

            img7off = new Image(); 
            img7off.src = "/design/mss/images/asbestos1.gif";

            img8off = new Image(); 
            img8off.src = "/design/mss/images/client1.gif";

            img9off = new Image(); 
            img9off.src = "/design/mss/images/links1.gif";

            img10off = new Image(); 
            img10off.src = "/design/mss/images/news1.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");
        }
}