title: Fire Serverside event from javascript
body: <p>i have hiddentfield whose value is changing on javascript.</p>
  
  <p>I just wanted to fire serverside event valuechanged event of hiddenfield when its value changed from javascript.</p>
  
  <p>I tried with :</p>
  
  <pre><code>__doPostBack('hfLatitude', 'ValueChanged');
  </code></pre>
  
  <p>But giving me error :</p>
  
  <pre><code>Microsoft JScript runtime error: '__doPostBack' is undefined
  </code></pre>
  
  <p>Is there any other alternative for this?</p>
  
  <p>Please help me.</p>