Master and Child page with Ajax

Hi,

You can do it without master page. actually I did it without masterpage

using Jquery.

Default.aspx
<div class="maincontainer" align="center">
        <div class="maincontainer ">
           <table width="100%" align="center">
             <tr>
               <td>
                 <h2>Welcome to Website</h2>
               </td>
             </tr>
             <tr>
               <td>
                 <table width="100%" align="center">
                   <tr>
                      <td><a href="#home" onclick="openpage('home')">Home</a></td>
                      <td><a href="#about" onclick="openpage('about')">About Us</a></td>
                      <td><a href="#gallery" onclick="openpage('gallery')">Gallery</a></td>
                       <td><a href="#req" onclick="openpage('prayreq')">Request</a></td>
                      <td><a href="#contact" onclick="openpage('contact')">Contact Us</a></td>
                   </tr>
                 </table>
               </td>
             </tr>
             <tr>
              <td>
                 <div id="maincontent">
                   This is Home Page Content
                 </div>
                </td>
             </tr>
           </table>
        </div>
    </div>

And the above page javascript for openpage

function openpage(pagename){
 $("#maincontentdiv").text("Page Loading please wait.....");
   $("#maincontentdiv").load(pagename + ".aspx #maincontent", function () {
                            // make content visible with effect   

                            
                        });
}

And the page which you've to load must contain like bellow div tag

aboutus.aspx
  <div id="maincontent">
        This is About us content
    </div>

If you use the same process you'll get best experience while loading partial page
You can try in master page also.

All the Best.