var chapter_list = new Array(
  ["Vol.01 Ch.001: Knockin' Down the Gate of the Nunnery","v01/c001"],
  ["Vol.01 Ch.002: The Hori Mondo Incident","v01/c002"],
  ["Vol.01 Ch.003: That Man","v01/c003"],
  ["Vol.01 Ch.004: 44 Buddhist Mortuary Tablets","v01/c004"],
  ["Vol.01 Ch.005: Hell's Street","v01/c005"],
  ["Vol.01 Ch.006: The Number of Snake Eyes Is Seven","v01/c006"],
  ["Vol.02 Ch.007: The Man with the Red Hannya-mask","v02/c007"],
  ["Vol.02 Ch.008: The Man with the Red Hannya-mask (2)","v02/c008"],
  ["Vol.02 Ch.009: Jubei Buying Baskets","v02/c009"],
  ["Vol.02 Ch.010: Negotiations in Yoshiwara","v02/c010"],
  ["Vol.02 Ch.011: Pack of Female Devils","v02/c011"],
  ["Vol.02 Ch.012: Pack of Female Devils (2)","v02/c012"],
  ["Vol.02 Ch.013: The Bearded Kyoto Doll","v02/c013"],
  ["Vol.03 Ch.014: Juubei Sensei","v03/c014"],
  ["Vol.03 Ch.015: Juubei Sensei (2)","v03/c015"],
  ["Vol.03 Ch.016: Cross Jump","v03/c016"],
  ["Vol.03 Ch.017: Bamboo Bridge","v03/c017"],
  ["Vol.03 Ch.018: 3 Snake Eyes","v03/c018"],
  ["Vol.03 Ch.019: 3 at Once","v03/c019"],
  ["Vol.03 Ch.020: The Hannya Gang","v03/c020"],
  ["Vol.04 Ch.021: The Hannya Gang (2)","v04/c021"],
  ["Vol.04 Ch.022: A Flower in Hell","v04/c022"],
  ["Vol.04 Ch.023: The Demon Mask Breaks","v04/c023"],
  ["Vol.04 Ch.024: Autumn Wind in Tokaiji","v04/c024"],
  ["Vol.04 Ch.025: Snake Eye Lot","v04/c025"],
  ["Vol.04 Ch.026: A Bride in Hell","v04/c026"],
  ["Vol.04 Ch.027: A Bride in Hell (2)","v04/c027"],
  ["Vol.04 Ch.028: A Bride in Hell (3)","v04/c028"],
  ["Vol.04 Ch.029: Watery Grave","v04/c029"],
  ["Vol.04 Ch.030: Watery Grave (2)","v04/c030"],
  ["Vol.05 Ch.031: Watery Grave (3)","v05/c031"],
  ["Vol.05 Ch.032: Watery Grave (4)","v05/c032"],
  ["Vol.05 Ch.033: Watery Grave (5)","v05/c033"],
  ["Vol.05 Ch.034: Exposed","v05/c034"],
  ["Vol.05 Ch.035: Exposed (2)","v05/c035"],
  ["Vol.05 Ch.036: Accursed Tokaiji","v05/c036"],
  ["Vol.05 Ch.037: Accursed Tokaiji (2)","v05/c037"],
  ["Vol.05 Ch.038: Gift from Edo","v05/c038"],
  ["Vol.05 Ch.039: Gift from Edo (2)","v05/c039"],
  ["Vol.05 Ch.040: Journey to the North","v05/c040"],
  ["Vol.06 Ch.041: Journey to the North (2)","v06/c041"],
  ["Vol.06 Ch.042: Journey to the North (3)","v06/c042"],
  ["Vol.06 Ch.043: Journey to the North (4)","v06/c043"],
  ["Vol.06 Ch.044: Journey to the North (5)","v06/c044"],
  ["Vol.06 Ch.045: Journey to the North (6)","v06/c045"],
  ["Vol.06 Ch.046: Journey to the North (7)","v06/c046"],
  ["Vol.06 Ch.047: Journey to the North (8)","v06/c047"],
  ["Vol.06 Ch.048: Journey to the North (9)","v06/c048"],
  ["Vol.06 Ch.049: Journey to the North (10)","v06/c049"],
  ["Vol.06 Ch.050: From Here on Aizu","v06/c050"],
  ["Vol.06 Ch.051: From Here on Aizu (2)","v06/c051"],
  ["Vol.07 Ch.052: From Here on Aizu (3)","v07/c052"],
  ["Vol.07 Ch.053: From Here on Aizu (4)","v07/c053"],
  ["Vol.07 Ch.054: From Here on Aizu (5)","v07/c054"],
  ["Vol.07 Ch.055: Douhaku's Bedtime Story","v07/c055"],
  ["Vol.07 Ch.056: Douhaku's Bedtime Story (2)","v07/c056"],
  ["Vol.07 Ch.057: Suspension Bridge","v07/c057"],
  ["Vol.07 Ch.058: Broken Bridge","v07/c058"],
  ["Vol.07 Ch.059: Broken Bridge 2","v07/c059"],
  ["Vol.07 Ch.060","v07/c060"],
  ["Vol.08 Ch.061: Battle Head-on II","v08/c061"],
  ["Vol.08 Ch.062: Battle Head-on III","v08/c062"],
  ["Vol.08 Ch.063: Battle Head-on IV","v08/c063"],
  ["Vol.08 Ch.064: Takuan's Temari Song","v08/c064"],
  ["Vol.08 Ch.065: Being on the Move","v08/c065"],
  ["Vol.08 Ch.066: Being on the Move II","v08/c066"],
  ["Vol.08 Ch.067: Being on the Move III","v08/c067"],
  ["Vol.08 Ch.068: Being on the Move IV","v08/c068"],
  ["Vol.08 Ch.069: Being on the Move V","v08/c069"],
  ["Vol.08 Ch.070: Full of Tricks","v08/c070"],
  ["Vol.08 Ch.071","v08/c071"],
  ["Vol.09 Ch.071: Full of Tricks II","v09/c071"]
);

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;