var chapter_list = new Array(
  ["Vol.01 Ch.000: Prelude","v01/c000"],
  ["Vol.01 Ch.001: You Were Thinking Something Dirty, Weren’t You…","v01/c001"],
  ["Vol.01 Ch.002: Yoshiyuki Is So Popular <3","v01/c002"],
  ["Vol.01 Ch.003: The Oceanic Sunset Is the Premonition of Love","v01/c003"],
  ["Vol.01 Ch.004: Doesn't Matter if I Play with It a Bit, Right ?","v01/c004"],
  ["Vol.01 Ch.005: The Lonely-looking Nanaka","v01/c005"],
  ["Vol.01 Ch.006: The Greatest Pageant in History... Begins!","v01/c006"],
  ["Vol.01 Ch.007: The Yoshiyuki that Koko Likes","v01/c007"],
  ["Vol.01 Ch.008: It'll be Great if We Can Stay Together More Often","v01/c008"]
);

var total_chapters = 9;

for (var i = 0; i < chapter_list.length; i++) {
  document.getElementById('top_chapter_list').options[i] = new Option(chapter_list[i][0], chapter_list[i][1]);
  document.getElementById('bottom_chapter_list').options[i] = new Option(chapter_list[i][0], chapter_list[i][1]);
}
document.getElementById('top_chapter_list').value=current_chapter;
document.getElementById('bottom_chapter_list').value=current_chapter;
var current_chapter_index = document.getElementById('top_chapter_list').selectedIndex;