var chap_array = new Array(
["A Love For Sweet Things 3",'a-love-for-sweet-things-3'],
["A Love For Sweet Things 2",'a-love-for-sweet-things-2'],
["A Love For Sweet Things 1",'a-love-for-sweet-things-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]);
}