title: How to pass HTTP AUTH values via prototype Ajax.Request()?
body: <p>Is there any way to pass HTTP AUTH username and password along with an Ajax.request()? Basically, I'm trying to find the equivalent of: </p>
  
  <pre><code>curl user:pass http://url.com
  </code></pre>
  
  <p>Is seems this has to be available, but I can't figure it out. If not, is there another JS alternative?</p>