var chap_array = new Array(
    ["8 - Hyrule and Ganondorf",'8/01'],

    ["7 - Hurry to the Tower of the Gods!",'7/01'],

    ["6 - From Fish Island to Outset Island",'6/01'],

    ["5 - Forest Haven and the Forbidden Forest",'5/01'],

    ["4 - If You Climb Dragon Roost Island",'4/01'],

    ["3 - Meeting on Windfall Island",'3/01'],

    ["2 - Get into the Forsaken Fortress",'2/01'],

    ["1 - Starting Out from Puroro Island",'1/00']
);
for (var i=0; i<chap_array.length; i++) {
    document.getElementById('id_chapter_1').options[i] = new Option(chap_array[i][0],chap_array[i][1]);
    if (document.getElementById('id_chapter_2')) {
        document.getElementById('id_chapter_2').options[i] = new Option(chap_array[i][0],chap_array[i][1]);
    }
}