var chap_array = new Array(
    ["23 - Spiral Life",'23/01'],

    ["22 - Full Emotion Fools",'22/01'],

    ["21 - The Lost World",'21/01'],

    ["20 - The Future is in Our Hands",'20/01'],

    ["19 - What Can You See from Your Place",'19/01'],

    ["18 - If Only Had a Brain",'18/01'],

    ["17 - Again and Again",'17/01'],

    ["16 - Right Now",'16/001'],

    ["15 - The Heretic Anthem",'15/01'],

    ["14 - Easy to Smile",'14/01'],

    ["13 - Flourish",'13/01'],

    ["12 - Flowers of Isolated Helpess",'12/01'],

    ["11 - Know Your Enemy",'11/01'],

    ["10 - It is a Child with Adult Alone Alone",'10/01'],

    ["9 - The World Shatters and Resonates in My Ears",'9/01'],

    ["8 - TWO MACHINES-GUNS",'8/01'],

    ["7 - Summertime Blues",'7/01'],

    ["6 - Siamese Dream",'6/01'],

    ["5 - The Sun and The Moon",'5/01'],

    ["4 - Silence Burns",'4/01'],

    ["3 - Holidays in the Sun",'3/01'],

    ["2 - Kids Are Allright",'2/01'],

    ["1 - START TODAY",'1/01']
);
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]);
    }
}