var chapter_list = new Array(
  ["Vol.01 Ch.001: The Palmtop Tiger Arrives","v01/c001"],
  ["Vol.01 Ch.002: Midnight Ambush","v01/c002"],
  ["Vol.01 Ch.003: Close Proximity","v01/c003"],
  ["Vol.01 Ch.004: The Great Mission: Passing Practice of Love!","v01/c004"],
  ["Vol.01 Ch.005: Aisaka and Ryuuji's First Mission","v01/c005"],
  ["Vol.01 Ch.006: The Rumored Couple","v01/c006"],
  ["Vol.01 Ch.006.1: same as chapter 6","v01/c006.1"],
  ["Vol.02 Ch.007: A Well Matched Couple","v02/c007"],
  ["Vol.02 Ch.007.1: same as chapter 7","v02/c007.1"],
  ["Vol.02 Ch.008: Within Her Fragile Heart","v02/c008"],
  ["Vol.02 Ch.009: Bye-bye","v02/c009"],
  ["Vol.02 Ch.010: The Confession","v02/c010"],
  ["Vol.02 Ch.011: Dragon Tiger Stand Together","v02/c011"],
  ["Vol.02 Ch.012: Family Restaurant Bomber","v02/c012"],
  ["Vol.02 Ch.013: The Captivating Model","v02/c013"],
  ["Vol.02 Ch.014: An Angelic Mask","v02/c014"],
  ["Vol.02 Ch.014.5: Ryuuji and Taiga's Summer Break","v02/c014.5"],
  ["Vol.02 Ch.015: Ryuuji and his happy crew?!","v02/c015"],
  ["Vol.03 Ch.016: This is not good","v03/c016"],
  ["Vol.03 Ch.017: The Secret of the Pretty Soldier","v03/c017"],
  ["Vol.03 Ch.018: It's Punishment For The Flesh ♡","v03/c018"],
  ["Vol.03 Ch.019: The Ultimate Decision","v03/c019"],
  ["Vol.03 Ch.020: The Lunch Strategy 2","v03/c020"],
  ["Vol.03 Ch.021: He's Back!","v03/c021"],
  ["Vol.03 Ch.022: Little Devilish Angel","v03/c022"],
  ["Vol.03 Ch.023: The Whole Story","v03/c023"]
);

var total_chapters = 26;

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;