var chapter_list = new Array(
  ["Vol.01 Ch.001","v01/c001"],
  ["Vol.01 Ch.002: Beginning!?","v01/c002"],
  ["Vol.01 Ch.003: The Mamba Girl","v01/c003"],
  ["Vol.01 Ch.004: That Manservant","v01/c004"],
  ["Vol.01 Ch.005: Your Name Is","v01/c005"],
  ["Vol.01 Ch.006: Beautiful Lie","v01/c006"],
  ["Vol.01 Ch.007: The Painful Truth","v01/c007"],
  ["Vol.01 Ch.008: A Young Girl's Feelings","v01/c008"],
  ["Vol.02 Ch.009: Times Square","v02/c009"],
  ["Vol.02 Ch.010: Summer Garden","v02/c010"],
  ["Vol.02 Ch.011: Girl Meets Girl","v02/c011"],
  ["Vol.02 Ch.012: Milk & Bitter","v02/c012"],
  ["Vol.02 Ch.013: Sugar and Spice","v02/c013"],
  ["Vol.02 Ch.014: Lady in the Pool","v02/c014"],
  ["Vol.02 Ch.015: Winter Garden","v02/c015"],
  ["Vol.02 Ch.016: For Whose Sake Will the Bell Be Rung?","v02/c016"],
  ["Vol.02 Ch.017: Chocolate","v02/c017"],
  ["Vol.02 Ch.018: Wedding Crashers","v02/c018"],
  ["Vol.02 Ch.019: Yakuza Son-in-Laws","v02/c019"],
  ["Vol.02 Ch.020: My.Friend.Memory","v02/c020"],
  ["Vol.02 Ch.021: Water World","v02/c021"],
  ["Vol.02 Ch.022: Deep Blue","v02/c022"],
  ["Vol.02 Ch.023: Cats and a Free Day in Summer","v02/c023"],
  ["Vol.02 Ch.024: The Summer with You","v02/c024"],
  ["Vol.02 Ch.025: A Midsummer Night's Dream","v02/c025"],
  ["Vol.02 Ch.026.1: Innocent Love -Part 1-","v02/c026.1"],
  ["Vol.02 Ch.026.2: Innocent Love -Part 2-","v02/c026.2"],
  ["Vol.02 Ch.027: After School","v02/c027"],
  ["Vol.02 Ch.028: Dear Friend","v02/c028"],
  ["Vol.05 Ch.029: Turn Around to a Beautiful Girl","v05/c029"],
  ["Vol.05 Ch.029.5: Day of Come-Back","v05/c029.5"]
);

var total_chapters = 31;

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;