function PreLoadMouseOverImages() {
    var i = 0;

    imagesObj = new Array();
    images = new Array();

    images[0] = "images/nav_home_mo.png";
    images[1] = "images/nav_about_mo.png";
    images[2] = "images/nav_services_mo.png";
    images[3] = "images/nav_referrals_mo.png";
    images[4] = "images/nav_contact_mo.png";
    images[5] = "images/nav_resources_mo.png";
    images[6] = "images/nav_careers_mo.png";
    for (i = 0; i <= 6; i++) {
        imagesObj[i] = new Image();
        imagesObj[i].src = images[i];
    }
}