var chap_array = new Array(
    ["25 - The Tight-knit Team",'25/01'],

    ["24 - Experience vs Teammates",'24/01'],

    ["23 - A Lucky Circumstance",'23/01'],

    ["22 - Ueki's Belief",'22/01'],

    ["21 - Ueki's Teammates",'21/01'],

    ["20 - Byaku's Power",'20/01'],

    ["19 - Very Suspicious",'19/01'],

    ["18 - Vs Hair Salon Jet Black!",'18/01'],

    ["17 - Team Battles",'17/01'],

    ["16 - The Next Test",'16/01'],

    ["15 - Let's Go!! It's the Selection Battle!!",'15/01'],

    ["14 - Invisibility Power User, Davy",'14/01'],

    ["13 - The New Teammate - Sora",'13/01'],

    ["12 - Haiji Comes Home",'12/01'],

    ["11 - The Awakening of a Power User!",'11/01'],

    ["10 - Ueki and Haiji",'10/01'],

    ["9 - A Brother's Responsibility",'9/01'],

    ["8 - Vs Power User Shiro",'8/00-cover'],

    ["7 - Haiji's Style",'7/01'],

    ["6 - A Favor for Nagara",'6/01'],

    ["5 - The Washing Machine Test!",'5/01'],

    ["4 - Fight with the Store Owner",'4/01'],

    ["3 - What is Power",'3/01'],

    ["2 - Heading Towards Hangenkai World",'2/01'],

    ["1 - Determination - The Chance of a Lifetime",'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]);
    }
}