Struts2_Ajax tags not working

Hi,
I am new to Struts2_ajax tags. And I am using Ajax tags in my page just to check the ajax supported tags in Struts2. Following is my code:

The testajax.jsp => home page
---------------------------------
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Ajax Examples</title>

<jsp:include page="/ajax/commonInclude.jsp"/>

</head>

<body>
<div id="div1">Div 1</div>
<div id="div2">Div 2</div>
<s:url id="ajaxTest" value="/showAjaxResponse.action" />
<s:a theme="ajax" href="%{ajaxTest}" targets="dev1,dev2">Update divs</s:a>
</body>
</html>

Struts.xml
----------
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>

<package name="ajaxexample" extends="struts-default">
<action name="showAjaxResponse">
<result>/1.jsp</result>
</action>
</package>

</struts>

1.jsp
------
<%= "Hello.. This is ajax jsp response" %>

When i click on the link "Update divs", i am getting response in the next page, not getting in the same page div tags.
And one more thing: commonInclude.jsp i don't have and also ajax folder.
I found code like this:
<jsp:include page="/ajax/commonInclude.jsp"/>
Where will be this file, will come with struts2 library files??

Any other configurations required?
Can anyone please suggest me in running this Struts2_ajax jsp?

~ Thanks in advance..!