Gets a YouTube FLV Url from the source of a page.

Get YouTube FLV URL

// Assuming 'response' is the source of a You Tube video page, this will get the flv url
var vid = id.substring(3);
var r = response;
var doc = r.substring(r.indexOf(".swf?video_id="));
var tpoint = r.indexOf("&t=");
var doc = r.substring(tpoint, r.indexOf("\"", tpoint));
var url = "http://youtube.com/get_video.php?video_id=";
url += vid + doc;