import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/xul/grid/examples/javascriptappend.xul

@@ -0,0 +1,42 @@
+<?xml version="1.0"?> 
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?> 
+
+<!DOCTYPE window> 
+
+
+<window orient="vertical" style="border: 2px solid green"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> 
+
+  <script>
+    function start()
+	{
+	   var row = document.getElementById("row");
+	   var text = document.createElement("text");
+	   text.setAttribute("value", "foo");
+	   row.appendChild(text);
+	}
+
+  </script>
+
+  <hbox>
+    <grid style="border: 2px solid red;" id="grid">
+	   <columns>
+	   </columns>
+
+	   <rows>
+	     <row id="row">
+		   <button label="value"/>
+		 </row>
+	   </rows>
+	</grid>
+	<spacer flex="1" style="background-color: white"/>
+  </hbox>
+
+  <button label="insert" oncommand="start()"/>
+
+</window>