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    <blockquote> <p>Communication between an iframe and parent document is not possible for cross-origin resources</p> </blockquote> <p>that is in so many ways wrong, i dont even WANT to know where to begin. Of course cross-domain requests and algorith-exchanges have a long history, it is both well documented and working now, one might start JSON-request or even simple XMLHttp-Requests via JQuery, for example, you can even load whole .js-files AND inject them into your code - injecting code in remote sources will of course need an appropriate interface; one may achieve such a thing via communication with the responsible persons, just ask them nicely and maybe they'll cooperate if your project makes sense and has its use.</p> <p>To answer the question : accessing whole documents would raise the need for transferring it beforehand - i would recommend XML for that purpose because the DOM-tree and XML are nearly interchangeable. Load the tree via <a href="http://api.jquery.com/jQuery.get/" rel="nofollow">.get</a> (<a href="http://api.jquery.com/jQuery.ajax/" rel="nofollow">.ajax</a> for remote hosts), <a href="http://api.jquery.com/appendTo/" rel="nofollow">append</a> it to <strong>this</strong> and access it just like you want ... sounds easy and if you got some experience it IS easy. If you ever read "cross-domain" and "not possible" in the same sentence again you might as well ignore the poster - there are many people out there who dont know what they're talking about ;-)</p>
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