// Preloading roll-over images

environmental = new Image;
environmental.src = "/elements/menus/environmental_services_on.gif";
waste = new Image;
waste.src = "/elements/menus/waste_management_on.gif";
industrial = new Image;
industrial.src = "/elements/menus/industrial_hygiene_on.gif";
link = new Image;
link.src = "/elements/menus/links_on.gif";