function cleanSource(html) {
    var lines = html.split(/\n/);

    lines.shift();
    lines.splice(-1, 1);

    var indentSize = lines[0].length - lines[0].trim().length,
        re = new RegExp(" {" + indentSize + "}");

    lines = lines.map(function(line){
      if (line.match(re)) {
        line = line.substring(indentSize);
      }

      return line;
    });

    lines = lines.join("\n");

    return lines;
  }

  $("#opensource").click(function() {
    $.get(window.location.href, function(data){
      var html = $(data).find(window.page).html();
      html = cleanSource(html);
      $("#source-modal pre").text(html);
      $("#source-modal").modal();
    });
  });