// Mouse Over Start
        if (document.images) {
            img1on = new Image();      
            img1on.src = "images/n_page_1_over.gif";      
									
            img1off = new Image(); 
            img1off.src = "images/n_page_1.gif";
			 
			img2on = new Image();      
            img2on.src = "images/n_page_1_over.gif";      
									
            img2off = new Image(); 
            img2off.src = "images/n_page_1.gif";
			
			img3on = new Image();      
            img3on.src = "images/order_page_over.gif";      
									
            img3off = new Image(); 
            img3off.src = "images/order_page.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");
        }
}