if (document.images) {            // Active Images
            img1on = new Image();      
            img1on.src = "images/nav/home_omo.jpg";

             img1off = new Image();      
            img1off.src = "images/nav/home.jpg"; 
						
						img2on = new Image();      
            img2on.src = "images/nav/about_omo.jpg";

            img2off = new Image(); 
            img2off.src = "images/nav/about.jpg";  
						
						 img3on = new Image();      
            img3on.src = "images/nav/creative_omo.jpg";

            img3off = new Image(); 
            img3off.src = "images/nav/creative.jpg";  
						
						img4on = new Image();      
            img4on.src = "images/nav/portfolio_omo.jpg";

            img4off = new Image(); 
            img4off.src = "images/nav/portfolio.jpg";
						
						img5on = new Image();      
            img5on.src = "images/nav/site_omo.jpg";

            img5off = new Image(); 
            img5off.src = "images/nav/site.jpg";
						
						img6on = new Image();      
            img6on.src = "images/nav/clients_omo.jpg";

            img6off = new Image(); 
            img6off.src = "images/nav/clients.jpg"; 
            
            img7on = new Image();      
            img7on.src = "images/nav/recent_omo.jpg";

            img7off = new Image(); 
            img7off.src = "images/nav/recent.jpg";
            
            img8on = new Image();      
            img8on.src = "images/nav/contact_omo.jpg";

            img8off = new Image(); 
            img8off.src = "images/nav/contact.jpg";
            
         }

// 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");
        }
}