function preloadHomeNav() {
    var imgRoot = "images/home/";
    var imgRootCommon = "images/common/";

    home_about_on = new Image();
    home_about_on.src = imgRoot + "home_02_on.jpg";
    home_about_off = new Image();
    home_about_off.src = imgRoot + "home_02_off.jpg";

    home_discussions_on = new Image();
    home_discussions_on.src = imgRoot + "home_04_on.jpg";
    home_discussions_off = new Image();
    home_discussions_off.src = imgRoot + "home_04_off.jpg";

    home_people_on = new Image();
    home_people_on.src = imgRoot + "home_06_on.jpg";
    home_people_off = new Image();
    home_people_off.src = imgRoot + "home_06_off.jpg";

    home_btn_1_on = new Image();
    home_btn_1_on.src = imgRoot + "btn_1_on.gif";
    home_btn_1_off = new Image();
    home_btn_1_off.src = imgRoot + "btn_1_off.gif";

    home_btn_2_on = new Image();
    home_btn_2_on.src = imgRoot + "btn_2_on.gif";
    home_btn_2_off = new Image();
    home_btn_2_off.src = imgRoot + "btn_2_off.gif";

    home_btn_3_on = new Image();
    home_btn_3_on.src = imgRoot + "btn_3_on.gif";
    home_btn_3_off = new Image();
    home_btn_3_off.src = imgRoot + "btn_3_off.gif";

    home_btn_4_on = new Image();
    home_btn_4_on.src = imgRoot + "btn_4_on.gif";
    home_btn_4_off = new Image();
    home_btn_4_off.src = imgRoot + "btn_4_off.gif";

    home_btn_5_on = new Image();
    home_btn_5_on.src = imgRoot + "btn_5_on.gif";
    home_btn_5_off = new Image();
    home_btn_5_off.src = imgRoot + "btn_5_off.gif";

    home_btn_6_on = new Image();
    home_btn_6_on.src = imgRoot + "btn_6_on.gif";
    home_btn_6_off = new Image();
    home_btn_6_off.src = imgRoot + "btn_6_off.gif";

    home_12_on = new Image();
    home_12_on.src = imgRoot + "home_12_on.jpg";
    home_12_off = new Image();
    home_12_off.src = imgRoot + "home_12_off.jpg";

    home_13_on = new Image();
    home_13_on.src = imgRoot + "home_13_on.jpg";
    home_13_off = new Image();
    home_13_off.src = imgRoot + "home_13_off.jpg";

    home_14_on = new Image();
    home_14_on.src = imgRoot + "home_14_on.jpg";
    home_14_off = new Image();
    home_14_off.src = imgRoot + "home_14_off.jpg";

    home_15_on = new Image();
    home_15_on.src = imgRoot + "home_15_on.jpg";
    home_15_off = new Image();
    home_15_off.src = imgRoot + "home_15_off.jpg";

    home_16_on = new Image();
    home_16_on.src = imgRoot + "home_16_on.jpg";
    home_16_off = new Image();
    home_16_off.src = imgRoot + "home_16_off.jpg";

    home_17_on = new Image();
    home_17_on.src = imgRoot + "home_17_on.jpg";
    home_17_off = new Image();
    home_17_off.src = imgRoot + "home_17_off.jpg";

    markings_1_on = new Image();
    markings_1_on.src = imgRoot + "markings_1_on.gif";
    markings_1_off = new Image();
    markings_1_off.src = imgRoot + "markings_1_off.gif";

    markings_2_on = new Image();
    markings_2_on.src = imgRoot + "markings_2_on.gif";
    markings_2_off = new Image();
    markings_2_off.src = imgRoot + "markings_2_off.gif";

    markings_3_on = new Image();
    markings_3_on.src = imgRoot + "markings_3_on.gif";
    markings_3_off = new Image();
    markings_3_off.src = imgRoot + "markings_3_off.gif";

    markings_4_on = new Image();
    markings_4_on.src = imgRoot + "markings_4_on.gif";
    markings_4_off = new Image();
    markings_4_off.src = imgRoot + "markings_4_off.gif";

    markings_5_on = new Image();
    markings_5_on.src = imgRoot + "markings_5_on.gif";
    markings_5_off = new Image();
    markings_5_off.src = imgRoot + "markings_5_off.gif";

    markings_6_on = new Image();
    markings_6_on.src = imgRoot + "markings_6_on.gif";
    markings_6_off = new Image();
    markings_6_off.src = imgRoot + "markings_6_off.gif";

    status_bar_0 = new Image();
    status_bar_0.src = "images/common/nopx.gif";

    status_bar_1 = new Image();
    status_bar_1.src = imgRoot + "status_1.gif";

    status_bar_2 = new Image();
    status_bar_2.src = imgRoot + "status_2.gif";

    status_bar_3 = new Image();
    status_bar_3.src = imgRoot + "status_3.gif";

    status_bar_4 = new Image();
    status_bar_4.src = imgRoot + "status_4.gif";

    status_bar_5 = new Image();
    status_bar_5.src = imgRoot + "status_5.gif";

    status_bar_6 = new Image();
    status_bar_6.src = imgRoot + "status_6.gif";

    nav_bot_about_on = new Image();
    nav_bot_about_on.src = imgRootCommon + "btn_about_the_series_on.gif";
    nav_bot_about_off = new Image();
    nav_bot_about_off.src = imgRootCommon + "btn_about_the_series_off.gif";

    nav_bot_discussions_on = new Image();
    nav_bot_discussions_on.src = imgRootCommon + "btn_discussions_on.gif";
    nav_bot_discussions_off = new Image();
    nav_bot_discussions_off.src = imgRootCommon + "btn_discussions_off.gif";

    nav_bot_journeys_on = new Image();
    nav_bot_journeys_on.src = imgRootCommon + "btn_journeys_on.gif";
    nav_bot_journeys_off = new Image();
    nav_bot_journeys_off.src = imgRootCommon + "btn_journeys_off.gif";

    nav_bot_timeline_on = new Image();
    nav_bot_timeline_on.src = imgRootCommon + "btn_timeline_on.gif";
    nav_bot_timeline_off = new Image();
    nav_bot_timeline_off.src = imgRootCommon + "btn_timeline_off.gif";

    nav_bot_people_on = new Image();
    nav_bot_people_on.src = imgRootCommon + "btn_people_on.gif";
    nav_bot_people_off = new Image();
    nav_bot_people_off.src = imgRootCommon + "btn_people_off.gif";

    nav_bot_site_map_on = new Image();
    nav_bot_site_map_on.src = imgRootCommon + "btn_site_map_on.gif";
    nav_bot_site_map_off = new Image();
    nav_bot_site_map_off.src = imgRootCommon + "btn_site_map_off.gif";

    nav_bot_privacy_policy_on = new Image();
    nav_bot_privacy_policy_on.src = imgRootCommon + "btn_privacy_policy_on.gif";
    nav_bot_privacy_policy_off = new Image();
    nav_bot_privacy_policy_off.src = imgRootCommon + "btn_privacy_policy_off.gif";

    nav_bot_site_credits_on = new Image();
    nav_bot_site_credits_on.src = imgRootCommon + "btn_site_credits_on.gif";
    nav_bot_site_credits_off = new Image();
    nav_bot_site_credits_off.src = imgRootCommon + "btn_site_credits_off.gif";

    nav_bot_resources_on = new Image();
    nav_bot_resources_on.src = imgRootCommon + "btn_resources_on.gif";
    nav_bot_resources_off = new Image();
    nav_bot_resources_off.src = imgRootCommon + "btn_resources_off.gif";

}

preloadHomeNav();