Fixed #503: Docs on the item property `subgroup` missing.

docs/timeline.html

@@ -245,6 +245,16 @@ var items = [
       example <code>"color: red; background-color: pink;"</code>.
     </td>
   </tr>
+  <tr>
+    <td>subgroup</td>
+    <td>String | Number</td>
+    <td>none</td>
+    <td>The id of a subgroup.
+      Groups all items within a group per subgroup, and positions them on the
+      same height instead of staking them on top of each other. can be ordered
+      by specifying the option <code>subgroupOrder</code> of a group.
+    </td>
+  </tr>
   <tr>
     <td>title</td>
     <td>String</td>
@@ -339,6 +349,14 @@ var groups = [
       example <code>"color: red; background-color: pink;"</code>.
     </td>
   </tr>
+  <tr>
+    <td>subgroupOrder</td>
+    <td>String | Function</td>
+    <td>none</td>
+    <td>Order the subgroups by a field name or custom sort function.
+      By default, groups are ordered by first-come, first-show.
+    </td>
+  </tr>
   <tr>
     <td>title</td>
     <td>String</td>
@@ -347,14 +365,6 @@ var groups = [
       The title can only contain plain text.
     </td>
   </tr>
-    <tr>
-        <td>subgroupOrder</td>
-        <td>String | Function</td>
-        <td>none</td>
-        <td>Order the subgroups by a field name or custom sort function.
-            By default, groups are ordered by first-come, first-show.
-        </td>
-    </tr>
 </table>
 
 

examples/timeline/30_subgroups.html

@@ -61,11 +61,11 @@
 
     var container = document.getElementById('visualization');
     var options = {
+        // orientation:'top'
         start: '2014-01-10',
         end: '2014-02-10',
         editable: true,
-        stack: false,
-//        orientation:'top'
+        stack: false
     };
 
     var timeline = new vis.Timeline(container, items, groups, options);