var chap_array = new Array(
    ["19",'19'],

    ["18",'18'],

    ["17",'17'],

    ["16",'16'],

    ["15 - Residents of Paradise",'15'],

    ["14 - Omen of Tradegy",'14'],

    ["13 - The Enamored Soul",'13'],

    ["12 - Surface Tension",'12'],

    ["11 - Hidden Ability",'11'],

    ["10 - Puritan's Donkey",'10'],

    ["9 - Curse and Fortune",'9'],

    ["8 - Wild Impulse",'8'],

    ["7 - Light and Darkness",'7'],

    ["6 - After the Banquet",'6'],

    ["5 - The Spent Arrow",'5'],

    ["4 - Crisis",'4'],

    ["3 - Proof of Murderous Intent",'3'],

    ["2 - Will to Fate",'2'],

    ["1 - The Warm Prison",'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]);
    }
}