title: document.domain same origin policy not working
body: <p>Despite of the fact that I have seen many articles (including in stackoverflow) demonstrating up how to bypass <em>javascript's same origin policy</em> assigning <strong>document.domain</strong> property, its not working. I also read in W3C specs that document.domain property is read-only and not all browsers accept setting it and I think that is the cause I can't get that working!</p>
  
  <p>I have a page (domain d1.y.com.br) and I need to invoke a button in an embedded iframe's page (domain d2.x.com.br). I'm setting the parent document.domain attribute to subdomain 'x.com.br' but I'm still receiving the 'access denied' error message in firebug console.</p>
  
  <p>I have also read about JSONP but its not the case here. I really need to interact with iframe's DOM and not only get data from there (using proxy service).</p>
  
  <p>Does really exist any way to bypass same origin policy to interact with the iframe's DOM ???</p>