updating age fields

{% block extra_scripts %}
<script src="{{STATIC_URL}}bootstrap/js/bootstrap.js" type="text/javascript"></script>
<script src="{{ STATIC_URL }}js/autoresize.jquery.min.js"></script>
<script type="text/javascript">
  function update_parent_fields() {
      var p_fullname, p_phone;
      var radio0 = $("#id_dossier-and-contacts-parental_confirm_0");
      var radio1 = $("#id_dossier-and-contacts-parental_confirm_1");

      if (ask_parents == true) {
        p_fullname = "";
        p_phone = "";
        radio0.prop('checked', false);
        radios.prop('checked', false);
      }
      else
      {
        console.log("no need to ask parents");
        p_fullname = "не актуально";
        p_phone = "не актуально";
        radio0.prop("checked", true);
      }

      $('input[name=dossier-and-contacts-parental_full_name]').val(p_fullname);
      $('input[name=dossier-and-contacts-parental_phone]').val(p_phone);
  };

    $(document).ready(function() {
        $('textarea').autoResize();
        var alert_box = $('.photo-upload-alert').css("display", "none");
        var photo_place = $('.photo-upload-place').mouseover(function(){ alert_box.css("display", "block"); });
        photo_place.mouseout(function(){ alert_box.css("display", "none"); });
/*        $('.button').bind('click', function() {
            /** The Opera workaround: doesn't show the file-choosing-dialof if the input widget is hidden. *//*
            var photo_upload_widget = $('input[id=id_dossier-photo]').show();
            photo_upload_widget.click();
            photo_upload_widget.hide();
        });*/
        var ask_parents = $('input[name=dossier-and-contacts-age]').val() >= 18;
        var display_tag = ask_parents ? "none" : "block";
        $('#parents').css("display", display_tag);
        update_parents_fields();


    });

  /* TODO: find out if this is actually necessary */
  $('input[id=id_dossier-and-contacts-photo]').change(function() {
      $('#upload-message').hide();
      $('#upload-confirm').show().css("display", "block");
      $('#upload-filename').text("(" + $(this).val().replace("C:\\fakepath\\", "") + ")");
  });

  $('input[name=dossier-and-contacts-age]').change(function() {
      var ask_parents = $(this).val() < 18;
      var display_tag = ask_parents ? "block" : "none";
      $('#parents').css("display", display_tag);

      update_parent_fields();

  });
</script>
{% endblock extra_scripts %}