var chap_array = new Array(
    ["38 - No Matter How Cute the PHS is, You Must Teach it Properly",'38'],

    ["37 - Please Take Notice Whne Using a PHS",'37'],

    ["36 - Does Your Cell Phone Need a Name",'36'],

    ["35 - This Is Not a Cell Phone",'35'],

    ["34 - Perhaps this is the Way to Buy a Cell Phone",'34'],

    ["33 - Please Refrain from Feeding Your Cell Phone",'33'],

    ["32 - Please Bring Cell Phones for Your Important Family Members",'32'],

    ["31 - Please Don't Bring Your Cell Phone with You to a Waterfall",'31'],

    ["30 - Please Do Not Allow Your Cell Phone to Jump Out of Line",'30'],

    ["29",'29'],

    ["28 - Turn Your Cell Off Before You Tell Someone You Love Them",'28'],

    ["27 - Loved Over the Cellular Call",'27'],

    ["26 - Light-speed Mail Delivery",'26'],

    ["25 - Know the Sex of Your Cell",'25'],

    ["24 - It's Not Always Good to Have a Small Cell",'24'],

    ["23 - First in the World! This is What Happens When You Dip a Cell in the Hot Springs",'23'],

    ["22 - Don't Forget to Bring Your Cell When You Travel",'22'],

    ["21 - Good Cellphones, Bad Cellphones",'21'],

    ["20 - Test Your Cell Occasionally",'20'],

    ["19",'19'],

    ["18 - Showercap is Bad for a Cell",'18'],

    ["17 - Keep Your Cell Always with You",'17'],

    ["16",'16'],

    ["15 - A Cellphone is Surprisingly Sturdy",'15'],

    ["14 - Cellphones are Afraid of Being Illegally Modified",'14'],

    ["13 - And This is How Spam Mail Comes",'13'],

    ["12 - Beware of the Service Charges!",'12'],

    ["11 - If Your Phone is Taken, Try to Get it Back",'11'],

    ["10 - Try Not to Show Off Your Phone Too Much in Public",'10'],

    ["9 - The Number of People That Use Their Phone for Photography is Increasing",'9'],

    ["8 - Payment Swindler Prevention",'8'],

    ["7 - Let's Send Eko a Message!",'7'],

    ["6 - Let's Choose the Ring Tone Carefully",'6'],

    ["5 - If You Get a Phone, Brag to Your Friends",'5'],

    ["4 - Beware the Boundaries of a Phone Call",'4'],

    ["3 - Want to Carry Around a Phone and be Carried",'3'],

    ["2 - Should be Picky about the Design",'2'],

    ["1 - I Bought a Cellphone",'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]);
    }
}