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) {
        menu_01_over = newImage("images/menu/menus_01-over.jpg");
        menu_02_over = newImage("images/menu/menus_02-over.jpg");
        menu_02_down = newImage("images/menu/menus_02-down.jpg");
        menu_03_over = newImage("images/menu/menus_03-over.jpg");
        menu_03_down = newImage("images/menu/menus_03-down.jpg");
        menu_04_over = newImage("images/menu/menus_04-over.jpg");
        menu_04_down = newImage("images/menu/menus_04-down.jpg");
        menu_05_over = newImage("images/menu/menus_05-over.jpg");
        menu_05_down = newImage("images/menu/menus_05-down.jpg");
        menu_06_over = newImage("images/menu/menus_06-over.jpg");
        menu_06_down = newImage("images/menu/menus_06-down.jpg");
        Wright_Pierce_home1_button_ON = newImage("images/Wright-Pierce-home-button-ON.gif");
        preloadFlag = true;
    }
}