if (document.images) {

	img1on = new Image();        
	img1on.src = "images/menu_home_on.gif"; 
	
	img2on = new Image();        
	img2on.src = "images/menu_products_on.gif"; 
	
	img3on = new Image();        
	img3on.src = "images/menu_order_on.gif"; 	

	img4on = new Image();        
	img4on.src = "images/menu_faq_on.gif"; 	
	
	img5on = new Image();        
	img5on.src = "images/menu_contact_on.gif"; 

	
	img1off = new Image();        
	img1off.src = "images/menu_home_off.gif"; 	
	
	img2off = new Image();        
	img2off.src = "images/menu_products_off.gif"; 	
	
	img3off = new Image();        
	img3off.src = "images/menu_order_off.gif"; 	
	
	img4off = new Image();        
	img4off.src = "images/menu_faq_off.gif"; 	

	img5off = new Image();        
	img5off.src = "images/menu_contact_off.gif"; 

}


      function imgOn(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "on.src");
            }
    }
    function imgOff(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "off.src");        
            }
    }