title: JavaScript injected through Chrome extension is not loaded
body: <p>I am trying to inject a JavaScript through a Chrome extension, but the script <code>onload</code> method is not called...</p>
  <pre><code>var scriptURL = 'http://'+response.scriptUrl,
      scriptTag = document.createElement('script');
  
  scriptTag.type = 'text/javascript';
  scriptTag.src = scriptURL;
  
  function onload()
  {
      alert('onload');
  };
          
  scriptTag.onload = onload;
  $('head').append(scriptTag);
  </code></pre>
  <p>Any ideas why the alert isn't raised?</p>