var chapter_list = new Array(
  ["Vol.01 Ch.001: Silver shadow","v01/c001"],
  ["Vol.01 Ch.002: Shin","v01/c002"],
  ["Vol.01 Ch.003: Aging","v01/c003"],
  ["Vol.01 Ch.004.1: invasion","v01/c004.1"],
  ["Vol.01 Ch.004.2","v01/c004.2"],
  ["Vol.02 Ch.005: Phantom Killer","v02/c005"],
  ["Vol.02 Ch.006: Nanaya","v02/c006"],
  ["Vol.02 Ch.007: Black","v02/c007"],
  ["Vol.02 Ch.008: Reprimand","v02/c008"],
  ["Vol.03 Ch.009.1: Resolve","v03/c009.1"],
  ["Vol.03 Ch.009.2","v03/c009.2"],
  ["Vol.03 Ch.010.1: Black King, White King","v03/c010.1"],
  ["Vol.03 Ch.010.2","v03/c010.2"],
  ["Vol.03 Ch.011.1: Foreboding","v03/c011.1"],
  ["Vol.03 Ch.011.2","v03/c011.2"],
  ["Vol.03 Ch.012: Descent","v03/c012"],
  ["Vol.03 Ch.013: Back","v03/c013"],
  ["Vol.04 Ch.014: Spring Snow","v04/c014"],
  ["Vol.04 Ch.015: Hiryu","v04/c015"],
  ["Vol.04 Ch.016: Helper","v04/c016"],
  ["Vol.04 Ch.017: Rei","v04/c017"],
  ["Vol.04 Ch.018: Kou","v04/c018"],
  ["Vol.04 Ch.019: Tear","v04/c019"],
  ["Vol.05 Ch.020","v05/c020"],
  ["Vol.05 Ch.021","v05/c021"],
  ["Vol.05 Ch.022","v05/c022"],
  ["Vol.05 Ch.023","v05/c023"],
  ["Vol.05 Ch.024: Past","v05/c024"],
  ["Vol.05 Ch.025","v05/c025"],
  ["Vol.06 Ch.026","v06/c026"],
  ["Vol.06 Ch.027","v06/c027"],
  ["Vol.06 Ch.028","v06/c028"],
  ["Vol.06 Ch.029","v06/c029"],
  ["Vol.06 Ch.030","v06/c030"],
  ["Vol.06 Ch.031: Serpent","v06/c031"],
  ["Vol.06 Ch.032","v06/c032"],
  ["Vol.06 Ch.032.5: The Sorano Group Workplace Manga! Extra","v06/c032.5"],
  ["Vol.07 Ch.033","v07/c033"],
  ["Vol.07 Ch.034","v07/c034"],
  ["Vol.07 Ch.035","v07/c035"],
  ["Vol.07 Ch.036","v07/c036"],
  ["Vol.07 Ch.037","v07/c037"],
  ["Vol.07 Ch.037.5: Naze? Naze? Neeze!! - Athletics with Everyone!","v07/c037.5"],
  ["Vol.08 Ch.038","v08/c038"],
  ["Vol.08 Ch.039","v08/c039"],
  ["Vol.08 Ch.040","v08/c040"],
  ["Vol.08 Ch.041","v08/c041"],
  ["Vol.08 Ch.042","v08/c042"],
  ["Vol.08 Ch.043: I will Execute all Traitors","v08/c043"],
  ["Vol.09 Ch.044: Looking for Eternal Light","v09/c044"],
  ["Vol.09 Ch.045: That strength, is the connection between relatives","v09/c045"],
  ["Vol.09 Ch.046","v09/c046"],
  ["Vol.09 Ch.047","v09/c047"],
  ["Vol.09 Ch.048","v09/c048"],
  ["Vol.09 Ch.048.2: Uploader's Note","v09/c048.2"],
  ["Vol.09 Ch.049: Kou's Origins Finally Revealed!","v09/c049"],
  ["Vol.09 Ch.050","v09/c050"],
  ["Vol.09 Ch.051: The Final Battle Begins! The Origins of Riot!","v09/c051"],
  ["Vol.09 Ch.052: The Peaceful Days are Gone Forever","v09/c052"],
  ["Vol.09 Ch.053: The Different Perceptions of the Four Kings, which Brought a Sad Ending to the World","v09/c053"],
  ["Vol.09 Ch.054","v09/c054"],
  ["Vol.09 Ch.055","v09/c055"],
  ["Vol.09 Ch.056","v09/c056"],
  ["Vol.09 Ch.057","v09/c057"],
  ["Vol.09 Ch.058: The Possibility of Taken Down Homurabi?","v09/c058"],
  ["Vol.09 Ch.059: That Blade, Strikes Without Any Hesitation","v09/c059"],
  ["Vol.09 Ch.060","v09/c060"],
  ["Vol.09 Ch.061","v09/c061"],
  ["Vol.09 Ch.062","v09/c062"],
  ["Vol.09 Ch.063","v09/c063"],
  ["Vol.09 Ch.064","v09/c064"],
  ["Vol.09 Ch.065","v09/c065"]
);

var total_chapters = 72;

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;