var chap_array = new Array(
    ["30 - For The One And Only, Eichi-kun",'30/01'],

    ["29 - If There's Nothing More To Come True, I Will",'29/01'],

    ["28",'28/01'],

    ["27 - Rabbit Moonlit Night, Dreamtears",'27/01'],

    ["26 - If You Were My Mermaid Princess",'26/01'],

    ["25 - Sugarless Milk Chocolate",'25/00'],

    ["24 - Someone Who Loves You",'24/01'],

    ["23 - One Moon That Even God Can't Stop",'23/01'],

    ["22 - Definite Territory Midnight Change",'22/01-02'],

    ["21 - Pure Love Romance Song",'21/01'],

    ["20 - I'll Falter At The Railway Crossing So Someday, Call My Name",'20/01'],

    ["19 - The Droplet of Reminiscence in the Rain, Can You See It",'19/00'],

    ["18 - Pure Antithesis 100 Percent",'18/01'],

    ["17 - Fish Cakes, Hypocrisy and Meroko",'17/01'],

    ["16 - The One That Connects The Broken Chain",'16/01'],

    ["15 - More, Because you Are Calling Me",'15/01-02'],

    ["14",'14/01'],

    ["13 - This Hidden Soul in Love That Grows, For You",'13/00'],

    ["12 - Prohibitory Hide and Seek",'12/00'],

    ["11 - Vision of an Angel",'11/00'],

    ["10 - Sadness Along With Love",'10/00'],

    ["9 - If It Was Now, Still, Already",'9/00'],

    ["8 - The Party Life That Never Ends",'8/01'],

    ["7",'7/00'],

    ["6 - Madoka's Terms",'6/00'],

    ["5 - In the Middle of the Vast Ocean",'5/01'],

    ["4 - Both Are Half Angel",'4/01'],

    ["3 - It's My Treasure",'3/01'],

    ["2 - As Long as the Wings Keep Flapping",'2/01'],

    ["1 - Mitsuki's Case",'1/01-02']
);
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]);
    }
}