in HTML5 the iframe has new attributes like \'seamless\' that should remove borders and scrollbars. I\'ve tried it but doesn\'t seem to work, I still can see scrollbars and
It is possible to use the semless attribute right now, here i found a german article http://www.solife.cc/blog/html5-iframe-attribut-seamless-beispiele.html
and here are another presentation about this topic: http://benvinegar.github.com/seamless-talk/
You have to use the window.postMessage method to communicate between the parent and the iframe.