var chapter_list = new Array(
  ["Vol.01 Ch.001: Who Is He?","v01/c001"],
  ["Vol.01 Ch.002: The Same Person!?","v01/c002"],
  ["Vol.01 Ch.003: Under the Cherry Blossom Tree","v01/c003"],
  ["Vol.01 Ch.004: Exposed!  Okay with It?","v01/c004"],
  ["Vol.01 Ch.005: Who Is It?","v01/c005"],
  ["Vol.02 Ch.006: No More Lackey!","v02/c006"],
  ["Vol.02 Ch.007: You Know You Love Him","v02/c007"],
  ["Vol.02 Ch.008: Is It Hot Because of the Mint Chewing Gum?","v02/c008"],
  ["Vol.02 Ch.009: The Takoyaki Promise","v02/c009"],
  ["Vol.03 Ch.010: A Night Just the Two of Us","v03/c010"],
  ["Vol.03 Ch.011: Kiss Kiss Kiss","v03/c011"],
  ["Vol.03 Ch.012: Finding My First Love","v03/c012"],
  ["Vol.03 Ch.013: I Will Always Be with You","v03/c013"],
  ["Vol.03 Ch.014: Not Just as a Lackey!","v03/c014"],
  ["Vol.03 Ch.015: Together, Always","v03/c015"]
);

var total_chapters = 15;

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;