var chap_array = new Array(
    ["52 - Stuck With This Face Again",'52'],

    ["51 - I Always Wanted to Tell You",'51'],

    ["50 - Pretty Face",'50'],

    ["49 - Change Change Change",'49'],

    ["48 - The Shocking Nozomi House",'48'],

    ["47 - The Cute Lily With Thorns",'47'],

    ["46 - Being a Nurse",'46'],

    ["45 - The Graduation Tree",'45'],

    ["44 - Yukie-chan - Girl in Love",'44'],

    ["43 - Not Exactly a Winter Lover 2",'43'],

    ["42 - Not Exactly a Winter Lover",'42'],

    ["41 - Happy Fun The Big Ski",'41'],

    ["40 - The Brutal Woman",'40'],

    ["39 - Happy Christmas",'39'],

    ["38 - Worried, In Pain, and Stuck in the Middle",'38'],

    ["37 - Give It Up Natsuo",'37'],

    ["36 - Natsuo Over Run",'36'],

    ["35 - Mistaken Memories are Cause for Accidents",'35'],

    ["34 - Great Kotaru Inspection Front",'34'],

    ["33 - The Great Otaru Search 5",'33'],

    ["32 - The Great Otaru Search 4",'32'],

    ["31 - The Great Otaru Search 3",'31'],

    ["30 - The Great Otaru Search 2",'30'],

    ["29 - Frantic Search in Otaru",'29'],

    ["28 - The Real Yuna is Found",'28'],

    ["27 - Rumble in the Temple",'27'],

    ["26 - Pests are Destroying a Happy Weekend",'26'],

    ["25 - A Valuable Gift",'25'],

    ["24 - Queen of Sports 2",'24'],

    ["23 - The Queen of Sports",'23'],

    ["22 - Transformation",'22'],

    ["21 - Please Fulfill My Wish",'21'],

    ["20 - Rina's Feelings",'20'],

    ["19 - When He Tries on a Swimsuit",'19'],

    ["18",'18'],

    ["17 - Investigating Yuna",'17'],

    ["16 - The New School Term Visitor",'16'],

    ["15 - Scary Face",'15'],

    ["14 - Hurry Up and Catch Hami-Kichi!",'14'],

    ["13 - Let Me Take Over the Nursing Job!",'13'],

    ["12 - Battles During Summer Job",'12'],

    ["11 - The Horrible Yukie",'11'],

    ["10 - Memories from the Sea",'10'],

    ["9 - Sisters' Okinawa Trip",'9'],

    ["8 - Confidence",'8'],

    ["7",'7'],

    ["6 - Mid-Term Wars 2",'6'],

    ["5 - Mid-Term Wars",'5'],

    ["4 - Downfall of the Body Examination",'4'],

    ["3 - Sisters Everyday Life",'3'],

    ["2 - Feminity",'2'],

    ["1 - An Impossible Journey is about to Begin",'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]);
    }
}