// Disable Duration dropdown

$(function(){
  $('#edit-n-days').attr("disabled", true);
  $('#edit-least-most').click(function(){
    if($('#edit-least-most').val() == "0"){
    $('#edit-n-days').attr("disabled", true);
    }
    else {
      $('#edit-n-days').removeAttr("disabled");
    }
    return true;
  })
});

// Filter by Departure Date

function filterByDepartureDate() {
  var departure_date_earliest = encodeURIComponent($("#filter_departure_date_earliest").val());
  var departure_date_latest = encodeURIComponent($("#filter_departure_date_latest").val());
  var url = "/advanced-trip/search/filter/date?departure_date_earliest=" + departure_date_earliest + "&departure_date_latest=" + departure_date_latest;
  window.location.href = url;
}

$(function() {  
  // initialise the departure date filter fields:
  $("#filter_departure_date_earliest").datepicker();
  $("#filter_departure_date_earliest").datepicker('option', {dateFormat: 'd MM yy'}); 
  $("#filter_departure_date_latest").datepicker();
  $("#filter_departure_date_latest").datepicker('option', {dateFormat: 'd MM yy'}); 
});