function newImage(arg) {
if (document.images) {
rslt = new Image();
rslt.src = arg;
return rslt;
}
}

function changeImages() {
if (document.images && (preloadFlag == true)) {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
}
}
}

var preloadFlag = false;
function preloadImages() {
if (document.images) {

plianavover = newImage("/images/plianavover.gif");
// afnavover = newImage("/images/afnavover.gif");
plicnavover = newImage("/images/plicnavover.gif");

museumover = newImage("/images/museumover.gif");
homeover = newImage("/images/homeover.gif");

aboutover = newImage("/images/aboutover.gif");
dispatchesover = newImage("/images/dispatchesover.gif");
newsroomover = newImage("/images/newsroomover.gif");
exhibitsover = newImage("/images/exhibitsover.gif");
teamsover = newImage("/images/teamsover.gif");
sponsorsover = newImage("/images/sponsorsover.gif");
eventsover = newImage("/images/eventsover.gif");
lessonsover = newImage("/images/lessonsover.gif");
mapsover = newImage("/images/mapsover.gif");
discussionover = newImage("/images/discussionover.gif");
contributionsover = newImage("/images/contributionsover.gif");
geoactionover = newImage("/images/geoactionover.gif");

itineraryover = newImage("/images/itineraryover.gif");

searchmnover = newImage("/images/searchmnover.gif");

// managementover = newImage("/images/managementover.gif");

trekover = newImage("/images/trekover.gif");

preloadFlag = true;
}
}