if (document.images) {            
            img1on = new Image();      
            img1on.src = "http://www.mikart.com/testing/images/menu.home-over.gif";

            img1off = new Image(); 
            img1off.src = "http://www.mikart.com/testing/images/menu.home.gif";  
			
            img2on = new Image();      
            img2on.src = "http://www.mikart.com/testing/images/menu.overview-over.gif";

            img2off = new Image(); 
            img2off.src = "http://www.mikart.com/testing/images/menu.overview.gif";  
			
			img3on = new Image();      
            img3on.src = "http://www.mikart.com/testing/images/menu.r.and.d-over.gif";

            img3off = new Image(); 
            img3off.src = "http://www.mikart.com/testing/images/menu.r.and.d.gif";  
			
			img4on = new Image();      
            img4on.src = "http://www.mikart.com/testing/images/menu.manufacturing-over.gif";

            img4off = new Image(); 
            img4off.src = "http://www.mikart.com/testing/images/menu.manufacturing.gif";  
			
			img5on = new Image();      
            img5on.src = "http://www.mikart.com/testing/images/menu.packaging-over.gif";

            img5off = new Image(); 
            img5off.src = "http://www.mikart.com/testing/images/menu.packaging.gif";  
			
			img6on = new Image();      
            img6on.src = "http://www.mikart.com/testing/images/menu.careers-over.gif";

            img6off = new Image(); 
            img6off.src = "http://www.mikart.com/testing/images/menu.careers.gif";  
			
			img7on = new Image();      
            img7on.src = "http://www.mikart.com/testing/images/menu.contact-over.gif";

            img7off = new Image(); 
            img7off.src = "http://www.mikart.com/testing/images/menu.contact.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");
        }
}