var chapter_list = new Array(
  ["Vol.01 Ch.001: The Prince Returns Home","v01/c001"],
  ["Vol.01 Ch.002: The Strength of the Middle Schoolers","v01/c002"],
  ["Vol.01 Ch.003: The True Strength Of The High Schoolers","v01/c003"],
  ["Vol.01 Ch.004: The Extermination Of Momoshiro's Demons","v01/c004"],
  ["Vol.01 Ch.005: Momoshiro's Determination","v01/c005"],
  ["Vol.01 Ch.006: Attacking Your Comrade","v01/c006"],
  ["Vol.01 Ch.007: Surmounting The Harsh Trials","v01/c007"],
  ["Vol.01 Ch.008: The Emperor vs. The Child of God (First Act)","v01/c008"],
  ["Vol.01 Ch.009: The Emperor vs. The Child Of God (Final Act)","v01/c009"],
  ["Vol.01 Ch.010: Those Chosen By Their Captains (Opening Act)","v01/c010"],
  ["Vol.01 Ch.011: Those Chosen By Their Captains (Final Act)","v01/c011"],
  ["Vol.01 Ch.012: Lost Children","v01/c012"],
  ["Vol.01 Ch.013: Encounter","v01/c013"],
  ["Vol.01 Ch.014: The Preface To Battle","v01/c014"],
  ["Vol.01 Ch.015: Successive Winners","v01/c015"],
  ["Vol.01 Ch.016: Winners And Losers.......","v01/c016"],
  ["Vol.01 Ch.017: The Losers Crawl On Up!","v01/c017"],
  ["Vol.01 Ch.018: Heaven Or Hell","v01/c018"],
  ["Vol.01 Ch.018.1: Omake: Jitaku 1 - Morning At The House Of Atobe","v01/c018.1"],
  ["Vol.01 Ch.018.2: Omake 2: Jitaku 2 - Morning In The House Of Sanada","v01/c018.2"],
  ["Vol.01 Ch.018.3: Pair Puri Volume 1: Prince of After School (4-koma)","v01/c018.3"]
);

var total_chapters = 21;

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;