fixed viaon and vialistener being the wrong way around

Author: remy

demos/offline-events.html

@@ -11,8 +11,8 @@
   <p>Test required here: File -> Work Offline - toggle the value and there <em>should</em> be three list items notifying of online and offline.</p>
   <ul>
     <li>via body "on" events: <span id="viabody"></span></li>
-    <li>via window "on" events: <span id="vialistener"></span></li>
-    <li>via window.addEventListener: <span id="viaon"></span></li>
+    <li>via window "on" events: <span id="viaon"></span></li>
+    <li>via window.addEventListener: <span id="vialistener"></span></li>
   </ul>
   <p>Note that the test shows that <code>window.ononline</code> and <code>window.onoffline</code> doesn't work (which I thought I had read in the specs somewhere...).</p>
 </article>