var chap_array = new Array(
["Acid Flower 6",'acid-flower-6'],
["Acid Flower 5",'acid-flower-5'],
["Acid Flower 4",'acid-flower-4'],
["Acid Flower 3",'acid-flower-3'],
["Acid Flower 2",'acid-flower-2'],
["Acid Flower 1",'acid-flower-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]);
}