function showShips(select_obj)
{
  if (!select_obj.options) return false;

  if (select_obj.multiple) return showShipsMulti(select_obj);

  if (!select_obj.form.ShipID) return false;

  vendor_id = select_obj.options[select_obj.selectedIndex].value;
  ship_select = select_obj.form.ShipID;

  removeAllOptionsFromSelect(ship_select);
  if (select_obj.selectedIndex == 0) {
    ship_select.disabled=true;
    addOptionToSelect(ship_select,'Any cruise ship','');
    return true;
  }

  ship_select.disabled=false;
  addShipsByVendor(ship_select, vendor_id, 'Any ' + select_obj.options[select_obj.selectedIndex].text + ' Ship');
}


function addShipsByVendor(ship_select, vendor_id, pre_option_text, multiselect)
{
  if (ships[vendor_id] && ships[vendor_id].length)

  if (pre_option_text && pre_option_text.length) {
    addOptionToSelect(ship_select, pre_option_text, '');
  }

  for (ship_count = 0; ship_count < ships[vendor_id].length; ship_count++) {
    var ship = ships[vendor_id][ship_count];
    if (multiselect) {
      addOptionToSelect(ship_select, '--' + ship[1], ship[0]);
    }
    else {
      addOptionToSelect(ship_select, ship[1], ship[0]);
    }
  }
}


function shipSelectMulti(select_obj)
{
  for (count = 0; count < select_obj.length; count++) {
    if (select_obj.options[count].selected && !select_obj.options[count].value.length) {
      select_obj.options[count].selected = false;
    }
  }

  return false;
}

function showShipsMulti(select_obj)
{
  if (!select_obj.options) return false;
  if (!select_obj.form.ship_list) return false;

  var ship_select = select_obj.form.ship_list;

  removeAllOptionsFromSelect(ship_select);
  if (select_obj.options[0].selected) {
    // Any Vendor Selected so clear all other vendor entries, and add vendors
    for (var count = 1; count < select_obj.length; count++) { // skip the first one.
      select_obj.options[count].selected = false;
      addShipsByVendor(ship_select, select_obj.options[count].value, select_obj.options[count].text + ' Ships', true);
    }
  }
  else {
    for (var count = 1; count < select_obj.length; count++) { // skip the first one.
      var vendor_id   = select_obj.options[count].value;
      var vendor_name = select_obj.options[count].text;
      if (select_obj.options[count].selected) {
        // vendor selected
        addShipsByVendor(ship_select, vendor_id, vendor_name + ' Ships',true);
      }
    }
  }

  if (!ship_select.options.length) {
    select_obj.options[0].selected = true;
    showShipsMulti(select_obj);
  }
}

ships = new Array();
  ships[3] = new Array();
      ships[3][0] = new Array(124,'Crystal Serenity');
      ships[3][1] = new Array(57,'Crystal Symphony');
    ships[7] = new Array();
      ships[7][0] = new Array(61,'Seven Seas Mariner');
      ships[7][1] = new Array(62,'Seven Seas Navigator');
      ships[7][2] = new Array(134,'Seven Seas Voyager');
    ships[18] = new Array();
      ships[18][0] = new Array(106,'Seabourn Legend');
      ships[18][1] = new Array(151214,'Seabourn Odyssey');
      ships[18][2] = new Array(107,'Seabourn Pride');
      ships[18][3] = new Array(523638,'Seabourn Quest');
      ships[18][4] = new Array(383736,'Seabourn Sojourn');
      ships[18][5] = new Array(108,'Seabourn Spirit');
    ships[19] = new Array();
      ships[19][0] = new Array(110,'Silver Cloud');
      ships[19][1] = new Array(252112,'Silver Explorer');
      ships[19][2] = new Array(111,'Silver Shadow');
      ships[19][3] = new Array(252113,'Silver Spirit');
      ships[19][4] = new Array(121,'Silver Whisper');
      ships[19][5] = new Array(112,'Silver Wind');
    ships[56] = new Array();
      ships[56][0] = new Array(391778,'Amadeus Diamond');
      ships[56][1] = new Array(391780,'Corinthian II');
      ships[56][2] = new Array(453099,'Galapagos Explorer II');
      ships[56][3] = new Array(138,'Pacific Explorer');
      ships[56][4] = new Array(140,'Spirit of 98');
      ships[56][5] = new Array(142,'Spirit of Columbia');
      ships[56][6] = new Array(143,'Spirit of Discovery');
      ships[56][7] = new Array(144,'Spirit of Endeavour');
      ships[56][8] = new Array(317,'Spirit of Yorktown');
    ships[61] = new Array();
      ships[61][0] = new Array(168,'Insignia');
      ships[61][1] = new Array(451304,'Marina');
      ships[61][2] = new Array(237,'Nautica');
      ships[61][3] = new Array(167,'Regatta');
      ships[61][4] = new Array(694446,'Riviera');
    ships[1591] = new Array();
      ships[1591][0] = new Array(324,'Azamara Journey');
      ships[1591][1] = new Array(325,'Azamara Quest');