var chapter_list = new Array(
  ["Vol.01 Ch.001: Azuma Akira's Coverage Begins!!","v01/c001"],
  ["Vol.01 Ch.002: During Azuma Akria's Coverage!!","v01/c002"],
  ["Vol.01 Ch.003: Do My Best!","v01/c003"],
  ["Vol.01 Ch.004: The Team Is Back!!","v01/c004"],
  ["Vol.01 Ch.005: Attack!  Kusunoki High","v01/c005"],
  ["Vol.01 Ch.006: Fight!!","v01/c006"],
  ["Vol.01 Ch.007: Help Me!!","v01/c007"],
  ["Vol.01 Ch.008: So Close, Yet So Far Away","v01/c008"],
  ["Vol.01 Ch.009: Aren't We Friends?","v01/c009"]
);

var total_chapters = 9;

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;