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) {
extranet25_over = newImage("/extranet/header_images/extranet25_over.gif");
extranet26_over = newImage("/extranet/header_images/extranet26_over.gif");
extranet27_over = newImage("/extranet/header_images/extranet27_over.gif");
extranet28_over = newImage("/extranet/header_images/extranet28_over.gif");
extranet29_over = newImage("/extranet/header_images/extranet29_over.gif");
extranet31_over = newImage("/extranet/header_images/extranet31_over.gif");
extranet33_over = newImage("/extranet/header_images/extranet33_over.gif");
extranet35_over = newImage("/extranet/header_images/extranet35_over.gif");
extranet37_over = newImage("/extranet/header_images/extranet37_over.gif");
extranet30_over = newImage("/extranet/header_images/extranet30_over.gif");
extranet32_over = newImage("/extranet/header_images/extranet32_over.gif");
extranet34_over = newImage("/extranet/header_images/extranet34_over.gif");
extranet36_over = newImage("/extranet/header_images/extranet36_over.gif");
extranet38_over = newImage("/extranet/header_images/extranet38_over.gif");
preloadFlag = true;
}
}