image1 = new Image();
image1.src = "images/nav/navigation_home_off.gif";

image2 = new Image();
image2.src = "images/nav/navigation_services_off.gif";

image3 = new Image();
image3.src = "images/nav/navigation_enviro_off.gif";

image4 = new Image();
image4.src = "images/nav/navigation_waste_off.gif";

image5 = new Image();
image5.src = "images/nav/navigation_metals_off.gif";

image6 = new Image();
image6.src = "images/nav/navigation_metals_off.gif";