click the HTML源代碼
then paste the <iframe width="560" height="315" src="http://www.youtube.com/embed/HJpH5oDQzGk" frameborder="0" allowfullscreen></iframe>
<a href="http://www.youtube.com/watch?v=HJpH5oDQzGk&feature=fvwp" target="_blank">fiona</a><embed src="http://youtu.be/HJpH5oDQzGk" width=360 height=300 controls=imagewindow autostart=true loop=true><BR
in the box