title: __doPostBack reloading entire page instead of just the UpdatePanel
body: <p>In my javascript, I have the following line:</p>
  
  <pre><code>__doPostBack('MyPanel', MyParam);
  </code></pre>
  
  <p>In my code behind, I use MyParam to query a database and bind the result to a gridview that's inside the MyPanel updatepanel. The updatemode of the updatepanel is set to conditional and in the postback part of the code I have <code>MyPanel.Update();</code></p>
  
  <p>The updatepanel works fine when I'm doing sorting and paging; only the panel is refreshed. However, when I trigger the updatepanel with my javascript, I see the traffic in firebug showing that the entire page is being refreshed.</p>
  
  <p>What's the solution?</p>
  
  <p>Thanks.</p>