if (document.images) {            // Active Images
            img1on = new Image();      
            img1on.src = "menu/images/guitars-on.gif";

            img2on = new Image();      
            img2on.src = "menu/images/music-on.gif";

            img3on = new Image();      
            img3on.src = "menu/images/services-on.gif";
			
			img4on = new Image();      
            img4on.src = "menu/images/about-on.gif";

            img5on = new Image();      
            img5on.src = "menu/images/links-on.gif";
			
			img6on = new Image();      
            img6on.src = "menu/images/contact-on.gif";
			
			img7on = new Image();      
            img7on.src = "menu/images/home-on.gif";

            	
			img1off = new Image(); 
            img1off.src = "menu/images/guitars.gif";

            img2off = new Image(); 
            img2off.src = "menu/images/music.gif";    
			
			img3off = new Image(); 
            img3off.src = "menu/images/services.gif";
			
			img4off = new Image(); 
            img4off.src = "menu/images/about.gif";
			
			img5off = new Image(); 
            img5off.src = "menu/images/links.gif";
			
			img6off = new Image(); 
            img6off.src = "menu/images/contact.gif";
			
			img7off = new Image(); 
            img7off.src = "menu/images/home.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");
        }
}