Changed te-form notice to show only when that option is ticked.

conjugation/drill.css

@@ -149,6 +149,7 @@ div#splash > * {
   margin-left: auto;
   margin-right: auto;
   display: table;
+  margin-bottom: 12px;
 }
 
 input#numQuestions {

conjugation/drill.html

@@ -60,7 +60,7 @@
         <label><input type="checkbox" id="trick" checked> Trick questions (answers may be the same as the given form)</label>
       </div>
 
-      <div><small>
+      <div id="te-notice"><small>
         When the test refers to negative て forms, they are assumed to be ～なくて  and not  ～ないで .
       </small></div>
 

conjugation/drill.js

@@ -1301,6 +1301,14 @@ function endQuiz() {
   $('#backToStart').focus();
 }
 
+function updateTeNotice() {
+  if ($('#te-form').is(':checked')) {
+    $('#te-notice').show();
+  } else {
+    $('#te-notice').hide();
+  }
+}
+
 $('window').ready(function() {
 
   // Add trick forms
@@ -1321,5 +1329,8 @@ $('window').ready(function() {
   $('#go').click(startQuiz);
   $('#backToStart').click(showSplash);
 
+  $('#te-form').click(updateTeNotice);
+  updateTeNotice();
+
   showSplash();
 });