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) {
home01over = newImage(src="../images/navbars/home01over.gif");
about01over = newImage(src="../images/navbars/about01over.gif");
browse01over = newImage(src="../images/navbars/browse01over.gif");
search01over = newImage(src="../images/navbars/search01over.gif");
helper01over = newImage(src="../images/navbars/helper01over.gif");
mygallery01over = newImage(src="../images/navbars/mygallery01over.gif");
contact01over = newImage(src="../images/navbars/contact01over.gif");
                preloadFlag = true;
        }
}