title: iFrame onload JavaScript event
body: <p>I have an iFrame, where I want to send a JavaScript command after loading.
  My current code looks like this:</p>
  
  <pre><code>&lt;iframe src="http://www.test.tld/" onload="__doPostBack('ctl00$ctl00$bLogout','')"&gt;
  </code></pre>
  
  <p>But with this code the command isn't executed. What must I change to make it work?
  Only Chrome and Firefox have to be supported.</p>