var chap_array = new Array(
["2x8 Song 13",'2x8-song-13'],
["2x8 Song 12",'2x8-song-12'],
["2x8 Song 11",'2x8-song-11'],
["2x8 Song 10",'2x8-song-10'],
["2x8 Song 9",'2x8-song-9'],
["2x8 Song 8",'2x8-song-8'],
["2x8 Song 7",'2x8-song-7'],
["2x8 Song 6",'2x8-song-6'],
["2x8 Song 5",'2x8-song-5'],
["2x8 Song 4",'2x8-song-4'],
["2x8 Song 3",'2x8-song-3'],
["2x8 Song 2",'2x8-song-2'],
["2x8 Song 1",'2x8-song-1']);

for (var i=0; i<chap_array.length; i++) {
document.getElementById('chapter_select').options[i] = new Option(chap_array[i][0],chap_array[i][1]);
}