<P align=center> <OBJECT width=425 height=344><PARAM NAME="movie" VALUE="http://www.youtube.com/v/77C_erPc1cY&hl=en&fs=1"><PARAM NAME="allowFullScreen" VALUE="true"> <embed src="http://www.youtube.com/v/77C_erPc1cY&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></OBJECT><BR><BR>Bài 2:<BR> <OBJECT width=425 height=344><PARAM NAME="movie" VALUE="http://www.youtube.com/v/M9a0OhO_4Z8&hl=en&fs=1"><PARAM NAME="allowFullScreen" VALUE="true"> <embed src="http://www.youtube.com/v/M9a0OhO_4Z8&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></OBJECT></P>
