var chapter_list = new Array(
  ["Vol.01 Ch.001: The Beginning","v01/c001"],
  ["Vol.01 Ch.002: Trust You","v01/c002"],
  ["Vol.01 Ch.003: Black and White","v01/c003"],
  ["Vol.02 Ch.004: Empty","v02/c004"],
  ["Vol.02 Ch.005: Stand Alone","v02/c005"],
  ["Vol.02 Ch.006: Rainy Blue","v02/c006"],
  ["Vol.02 Ch.007: Walk The Labyrinth","v02/c007"],
  ["Vol.03 Ch.008: Living Dead","v03/c008"],
  ["Vol.03 Ch.009: Take Back","v03/c009"],
  ["Vol.03 Ch.010: Waiting For Hero","v03/c010"],
  ["Vol.03 Ch.011: Find My Way","v03/c011"],
  ["Vol.03 Ch.012: Stay With You","v03/c012"],
  ["Vol.04 Ch.013: My Uneventful Day as Captain (Part 1)","v04/c013"],
  ["Vol.04 Ch.014: My Uneventful Day as Captain (Part 2)","v04/c014"],
  ["Vol.04 Ch.015: The Scene Just Before a Mission","v04/c015"],
  ["Vol.04 Ch.016: Goddess Arrives (Onsen Trip)","v04/c016"],
  ["Vol.04 Ch.017: Flowers of Bullets","v04/c017"],
  ["Vol.05 Ch.018: Time to Count Down","v05/c018"],
  ["Vol.05 Ch.019: 5 Minutes' Run Away","v05/c019"],
  ["Vol.05 Ch.020: Soldier's Corridor","v05/c020"],
  ["Vol.05 Ch.021: Big One Shoot","v05/c021"],
  ["Vol.05 Ch.022: Big One Percent","v05/c022"],
  ["Vol.06 Ch.023: Break Through","v06/c023"],
  ["Vol.06 Ch.024: I'm Not Student. I'm Killer","v06/c024"],
  ["Vol.06 Ch.025: Girl Separates From Boy","v06/c025"],
  ["Vol.06 Ch.026: Stand On My Own","v06/c026"],
  ["Vol.06 Ch.027: Birth of Mithril","v06/c027"],
  ["Vol.07 Ch.028: Chasing The Enemy","v07/c028"],
  ["Vol.07 Ch.029: Her Memories","v07/c029"],
  ["Vol.07 Ch.030: Real Bout","v07/c030"],
  ["Vol.07 Ch.031: Savage Vs M9","v07/c031"],
  ["Vol.08 Ch.032: Cost Of The Hesitation","v08/c032"],
  ["Vol.08 Ch.033: Pursuit Battle","v08/c033"],
  ["Vol.08 Ch.034: Only You","v08/c034"],
  ["Vol.08 Ch.035: The Voice from the North Pole","v08/c035"],
  ["Vol.09 Ch.036: Degenerated Witch","v09/c036"],
  ["Vol.09 Ch.037: Reactivation","v09/c037"],
  ["Vol.09 Ch.038: Each of their Roads","v09/c038"],
  ["Vol.09 Ch.039: Ace in the Hole","v09/c039"],
  ["Vol.10 Ch.040: Close to You","v10/c040"],
  ["Vol.10 Ch.041: Jet Stream Attack","v10/c041"],
  ["Vol.10 Ch.042: Power to Advance","v10/c042"],
  ["Vol.10 Ch.043: Like a Sword of Fire","v10/c043"],
  ["Vol.11 Ch.044: Make My Day","v11/c044"],
  ["Vol.11 Ch.045: Vacation of 30 Minutes","v11/c045"],
  ["Vol.11 Ch.046: Chain of Responsibility","v11/c046"],
  ["Vol.11 Ch.047: Go to the Beginning Place","v11/c047"],
  ["Vol.12 Ch.048: Reunion","v12/c048"],
  ["Vol.12 Ch.049: Key Stone","v12/c049"],
  ["Vol.12 Ch.050: Good Bye Days","v12/c050"],
  ["Vol.12 Ch.051: Whispering","v12/c051"],
  ["Vol.13 Ch.052: King of the World","v13/c052"],
  ["Vol.13 Ch.053: Last Shooting","v13/c053"],
  ["Vol.13 Ch.054: Good Bye My Mate","v13/c054"],
  ["Vol.13 Ch.055: Cry in the Disappearing World","v13/c055"],
  ["Vol.13 Ch.056: Engage Six Seven Part 1","v13/c056"]
);

var total_chapters = 56;

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;