Loading your ManagedIframeYou could even retrieve an entire page or AJAX response (no, not by setting its src property) from another domain (with a suitable Proxy) and write that content to your panels' local IFRAME for later use/manipulation:
IFrameEl.load("http://yourhost/getReport.php")
This is not the same as:
IFrameEl.setSrc("http://yourhost/getReport.php")