//preload needed nav images for all pages
MM_preloadImages( 'images/programs_ovr.gif','images/approaches_up.gif',
  'images/links_ovr.gif','images/mission3rd.gif','images/mission_ovr.gif' );

function preLoadDropDownMenu() {
   MM_preloadImages( 'images/about_areport_ovr.gif','images/about_areport_up.gif','images/about_jobs_ovr.gif',
    'images/about_jobs_up.gif','images/about_mission_ovr.gif','images/about_mission_up.gif',
    'images/about_newsroom_ovr.gif','images/about_newsroom_up.gif','images/about_staff_ovr.gif',
    'images/about_staff_up.gif','images/about_trustees_ovr.gif','images/about_trustees_up.gif',
    'images/what_donate_ovr.gif','images/what_donate_up.gif','images/what_travel_ovr.gif',
    'images/what_travel_up.gif','images/what_volunteer_ovr.gif','images/what_volunteer_up.gif',
    'images/where_heritage_ovr.gif','images/where_heritage_up.gif','images/where_sites_ovr.gif',
    'images/where_sites_up.gif' );
}
function preLoadSubNav() {
   MM_preloadImages( 'images/travel_ovr.gif','images/about_ovr.gif',
    'images/what_ovr.gif','images/where_ovr.gif','images/partners_ovr.gif',
    'images/contact_ovr.gif','images/search_ovr.gif' );
}
function preLoadAboutNav() {
   MM_preloadImages('images/missionhist_up.gif','images/newsroom_up.gif',
    'images/trustees_up.gif','images/staff_up.gif',  
    'images/report_up.gif','images/jobs_up.gif');
}
function preLoadWhereNav() {
   MM_preloadImages('images/where_we_work/where_africa_ovr.gif','images/where_we_work/where_asia_ovr.gif',
     'images/where_we_work/where_latin_ovr.gif','images/where_we_work/where_pacific_ovr.gif',
     'images/where_we_work/where_special_ovr.gif');
}