var chap_array = new Array(
    ["26 - Awakening",'26'],

    ["25 - June and October",'25'],

    ["24 - Burning Wind and Cherry Blossom",'24'],

    ["23 - Milk and Grave",'23'],

    ["22 - Tobacco and Moon",'22'],

    ["21 - Earthworms and Corn",'21'],

    ["20 - Ants and Potatoes",'20'],

    ["19 - Journey",'19'],

    ["18 - The Other Side of the Rainbow",'18'],

    ["17 - Rain at Night",'17'],

    ["16 - Howling",'16'],

    ["15 - Aim and Object",'15'],

    ["14 - Sea of Trees",'14'],

    ["13 - Spirit of Sound",'13'],

    ["12 - Our Way Home",'12'],

    ["11 - Castle",'11'],

    ["10 - Arashi",'10'],

    ["9 - Life",'9'],

    ["8 - Stars",'8'],

    ["7 - Water",'7'],

    ["6 - Hana",'6'],

    ["5 - The First Day",'5'],

    ["4 - Tender Beast",'4'],

    ["3 - Quiet Step",'3'],

    ["2 - White Sand",'2'],

    ["1 - Slow Awakening",'1']
);
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]);
    }
}