// Default jQuery wrapper
$(document).ready(function() {

  // When the first dropdown is changed
  $("#invite_states_list").change(function() {

    // Hide the second dropdown
    $("select#invite_location_id").css("display", "none");

    // url of the JSON
    var url;
    url = "invite/locations/" + $(this).attr("value")

    // Get the JSON for the selected item
    $.getJSON(url, function(data) {

      var options = '';
      // Parse through the results
      $.each(data.items, function(i, item) {
        options += '<option value="' + item.value + '">' + item.label + '</option>';
      })

      // Propagate the second dropdown
      $("select#invite_location_id").html(options).css("display", "block");

    }); // getJSON
  }); // first_dropdown.change
}); // document.ready