Userscripts.org

I would like a simple change:
the text link would not *replace* embedded youtube videos (on external sites),
but it would be *added* below the video.

I think I should change something on this part of the script:
/* EMBED CODES */
} else {
unsafeWindow.addEventListener('DOMNodeInserted', init, false);
embed_codes(document.getElementsByTagName('embed'));
embed_codes(document.getElementsByTagName('object'));
for(var i in toremove) {
toremove[i].parentNode.removeChild(toremove[i]);
}
toremove = [];
}

could you help me? Thanks in advice