footnotes/templates/dashboard/settings-start-end.html

<div class="footnotes_description">
	<p>[[description-escapement]]</p>
</div>
<table class="settings_start_end widefat fixed">
	<tbody>
		<tr>
			<td>[[label-short-code-start]]</td>
			<td>
				<span>[[short-code-start]]</span>
				<span>[[short-code-start-user]]</span>
			</td>
		</tr>
		<tr>
			<td>[[label-short-code-end]]</td>
			<td>
				<span>[[short-code-end]]</span>
				<span>[[short-code-end-user]]</span>
			</td>
		</tr>
	</tbody>
</table>
<div class="footnotes_description">
	<p>[[description-parentheses]]</p>
</div>
<table class="settings_start_end widefat fixed">
	<tbody>
		<tr>
			<td>[[label-syntax]]</td>
			<td>[[syntax]] <span class="footnotes_notice">[[notice-syntax]]</span></td>
		</tr>
	</tbody>
</table>
<div class="footnotes_description">
	<p>[[description-syntax]]</p>
</div>
<script type="text/javascript">
	var l_obj_ShortCodeStart = jQuery("#[[short-code-start-id]]");
	var l_obj_ShortCodeEnd = jQuery("#[[short-code-end-id]]");
	var l_obj_ShortCodeStartUserDefined = jQuery("#[[short-code-start-user-id]]");
	var l_obj_ShortCodeEndUserDefined = jQuery("#[[short-code-end-user-id]]");

	function footnotes_Display_UserDefined_Placeholders() {
		if (l_obj_ShortCodeStart.val() == "userdefined") {
			l_obj_ShortCodeStartUserDefined.parent().show();
			l_obj_ShortCodeEndUserDefined.parent().show();
		} else {
			l_obj_ShortCodeStartUserDefined.parent().hide();
			l_obj_ShortCodeEndUserDefined.parent().hide();
		}
	}
	footnotes_Display_UserDefined_Placeholders();

	l_obj_ShortCodeStart.on('change', function() {
		var l_int_SelectedIndex = jQuery(this).prop("selectedIndex");
		jQuery('#[[short-code-end-id]] option:eq(' + l_int_SelectedIndex + ')').prop('selected', true);
		footnotes_Display_UserDefined_Placeholders();
	});
	l_obj_ShortCodeEnd.on('change', function() {
		var l_int_SelectedIndex = jQuery(this).prop("selectedIndex");
		jQuery('#[[short-code-start-id]] option:eq(' + l_int_SelectedIndex + ')').prop('selected', true);
		footnotes_Display_UserDefined_Placeholders();
	});
</script>