title: Asynchronous cross-domain POST request via JavaScript?
body: <p>I could just create a form and use that to do a POST request to any site, thing is the FORM method isn't asynchronous, I need to know when the page has finished loading. I tried messing around with this using an iframe with a form inside, but no success. </p>
  
  <p>Any ideas?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>unfortunately I have no control over the response data, it varies from XML, json to simple text.</p>