youtube video download code

if u want to download youtube videos then go to your video and copy and paste the below given java script in ur address bar and enter...

javascript:b=fullscreenUrl;g=b.indexOf("t=");d=b.indexOf("&hl");h=b.substring(g,d);link="http://www.youtube.com/get_video?video_id=" + pageVideoId + "&" + h;location=(link);void(0)