private void loadSeats()
 {
     for (int row = 1; row <= 5; ++row)
     {
         string places = string.Empty;
         for (int column = 1; column <= 6; ++column)
         {
             int place = (row - 1) * 6 + column;
             if (!MySQLServer.check_seat(session_id, place.ToString()))
             {
                 places += String.Format("<li class=\"seat\"><input type=\"checkbox\" id=\"{0}\" onchange=\"update_cost(this)\" /><label for=\"{0}\">{0}</label></li>", place);
             }
             else
             {
                 places += String.Format("<li class=\"seat\"><input type=\"checkbox\" disabled id=\"{0}\" /><label for=\"{0}\">Occupied</label></li>", place);
             }
         }
         places      = "<ol class=\"seats\" type=\"A\">" + places + "</ol>";
         seats.Text += String.Format("<li class=\"row row--{0}\">{1}</li>", row.ToString(), places);
     }
 }