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

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

function changeImages() {
    changeImagesArray(changeImages.arguments);
}

function toggleImages() {
    for (var i = 0; i < toggleImages.arguments.length; i += 2) {
        if (selected == toggleImages.arguments[i]) changeImagesArray(toggleImages.arguments[i + 1]);
    }
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
    if (document.images) {
        menu_item_home_01_over = newImage("images/menu-item-home_01-over.jpg");
        menu_item_Hickory_over = newImage("images/menu-Foundation-over.jpg");
        menu_item_Activities_over = newImage("images/menu-item-activities-over.jpg");
        menu_FAQ_over = newImage("images/menu-FAQ-over.jpg");
        menu_contact_over = newImage("images/menu-contact-over.jpg");
        menu_sub_over = newImage("images/sub-menu-over.png");
          menu_school_over = newImage("images/check-out-school-over.png");
          menu_photos_over = newImage("images/photos-of-kids-over.jpg");
         staff_over = newImage("images/staff-over.png");
         parent_over = newImage("images/parent_participation-over.png");
         curr_over = newImage("images/curriculum-over.png");
         tran_over = newImage("images/transportation-over.png");
         health_over = newImage("images/health-over.png");
         care_over = newImage("images/aftercare-over.png");
         wow_over = newImage("images/menu-wow-board-over.png");
         activities_over = newImage("images/activities-over.png");
            trips_over = newImage("images/trips-over.png");
            entertainment_over = newImage("images/entertainment-over.png");
            music_over = newImage("images/music_and_dance-over.gif");
            arts_over = newImage("images/arts_and_crafts-over.gif");
            cooking_over = newImage("images/cooking-over.gif");
            nature_over = newImage("images/nature-over.gif");
            athletics_over = newImage("images/athletics-over.gif");
            swim_over = newImage("images/swim-over.png");
            playground_over = newImage("images/new-playground-over.png");
            infant_over = newImage("images/infant_program-over.png");
            staff_over = newImage("images/staff-over.png");
            camp_over = newImage("images/daycamp.png");
            curriculum_over = newImage("images/school_curriculum-over.png");
            phil_over = newImage("images/school_philosophy-over.png");
            center_over = newImage("center-based-learning-over.png");
      preloadFlag = true;
    }
}