title: javascript problem doPostBack
body: <p>I am having some problems. </p>
  
  <p>My page is failing in this javascript code (the second line):</p>
  
  <pre><code>function __doPostBack(eventTarget, eventArgument) {
      if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
          theForm.__EVENTTARGET.value = eventTarget;
          theForm.__EVENTARGUMENT.value = eventArgument;
          theForm.submit();
      }
  </code></pre>
  
  <p>It is telling me:</p>
  
  <blockquote>
    <p>'theForm.onsubmit' is null or not an
    object.</p>
  </blockquote>
  
  <p>Any ideas please?</p>
  
  <p>Thanks !
  C</p>