if (document.images) {

 abouton = new Image();
 abouton.src = "/images/menu_about_on.gif";

 aboutoff = new Image();
 aboutoff.src = "/images/menu_about_off.gif";

 conservationon = new Image();
 conservationon.src = "/images/menu_conservation_on.gif";

 conservationoff = new Image();
 conservationoff.src = "/images/menu_conservation_off.gif";

 newson = new Image();
 newson.src = "/images/menu_news_on.gif";

 newsoff = new Image();
 newsoff.src = "/images/menu_news_off.gif";

 exploreon = new Image();
 exploreon.src = "/images/menu_explore_on.gif";

 exploreoff = new Image();
 exploreoff.src = "/images/menu_explore_off.gif";

 helpon = new Image();
 helpon.src = "/images/menu_help_on.gif";

 helpoff = new Image();
 helpoff.src = "/images/menu_help_off.gif";

 volunteeron = new Image();
 volunteeron.src = "/images/menu_volunteer_on.gif";

 volunteeroff = new Image();
 volunteeroff.src = "/images/menu_volunteer_off.gif";

 publicationson = new Image();
 publicationson.src = "/images/menu_publications_on.gif";

 publicationsoff = new Image();
 publicationsoff.src = "/images/menu_publications_off.gif";

 grantson = new Image();
 grantson.src = "/images/menu_grants_on.gif";

 grantsoff = new Image();
 grantsoff.src = "/images/menu_grants_off.gif";

 kidson = new Image();
 kidson.src = "/images/menu_kids_on.gif";

 kidsoff = new Image();
 kidsoff.src = "/images/menu_kids_off.gif";

 statebayon = new Image();
 statebayon.src = "/images/menu_state_on.gif";

 statebayoff = new Image();
 statebayoff.src = "/images/menu_state_off.gif";

 divideron = new Image();
 divideron.src = "/images/menu_divider_on.gif";

 divideroff = new Image();
 divideroff.src = "/images/menu_divider_off.gif";

 }