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[6] = new Array();
      ships[6][0] = new Array(189,'Caribbean Princess');
      ships[6][1] = new Array(127,'Coral Princess');
      ships[6][2] = new Array(253,'Crown Princess');
      ships[6][3] = new Array(66,'Dawn Princess');
      ships[6][4] = new Array(128,'Diamond Princess');
      ships[6][5] = new Array(306,'Emerald Princess');
      ships[6][6] = new Array(67,'Golden Princess');
      ships[6][7] = new Array(69,'Grand Princess');
      ships[6][8] = new Array(129,'Island Princess');
      ships[6][9] = new Array(257843,'Ocean Princess');
      ships[6][10] = new Array(132,'Pacific Princess');
      ships[6][11] = new Array(80,'Regal Princess');
      ships[6][12] = new Array(308,'Royal Princess');
      ships[6][13] = new Array(54597,'Ruby Princess');
      ships[6][14] = new Array(169,'Sapphire Princess');
      ships[6][15] = new Array(82,'Sea Princess');
      ships[6][16] = new Array(83,'Star Princess');
      ships[6][17] = new Array(84,'Sun Princess');
      ships[6][18] = new Array(131,'Tahitian Princess');