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

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

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

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

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