Docs: Adds a note about popup chaining with a timeout (popup/index.html)

Also addressed to jquery-archive#4796 and jquery-archive#4968

Author: MauriceG

docs/pages/popup/index.html

@@ -332,6 +332,17 @@ <h2>Theming the popup and overlay</h2>
 		<h2>Note: Chaining of popups not allowed</h2>
 		<p>The framework does not currently support chaining of popups so it's not possible to embed a link from one popup to another popup. All links with a <code>data-rel="popup"</code> inside a popup will not do anything at all.</p>
 		<p>This also means that custom select menus will not work inside popups, because they are themselves implemented using popups. If you place a select menu inside a popup, it will be rendered as a native select menu, even if you specify <code>data-native-menu="false"</code>.</p>
+		<p>A workaround to get chained popups working is the use of a timeout for example in the <code>popupafterclose</code> event bound to the invoking popup. In the following example, when the first popup is closed, the second will be opened by a delayed call the open method:</p>
+<pre><code>
+$( document ).on( "pageinit", function() {
+    $( '.popupParent' ).on({
+        popupafterclose: function() {
+            setTimeout( function(){ $( '.popupChild' ).popup( 'open' ) }, 100 );
+        }
+    });
+});
+</code></pre>
+
 
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