Why facebook like button(use iframe) not showing when url is a fan page's post, thanks a lot~ : may I ask why when facebook like button href is a fan page, it's working perfectly.
[enter image description here][1]

<iframe src="https://www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2FOscarPet.tw%2F%3Ffref%3Dts&width=450&layout=standard&action=like&show_faces=false&share=true&height=35&appId=PleaseChange2ARealAppId" width="450" height="35" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true"></iframe>

  [1]: http://i.stack.imgur.com/aMLRH.png

But when href change to a fan page's "post", the like button not showing any more.

<iframe src="https://www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2FOscarPet.tw%2Fposts%2F1076964629016757&width=0&layout=standard&action=like&show_faces=false&share=true&height=35&appId=PleaseChange2ARealAppId" width="450" height="35" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true"></iframe>

Thanks a lot~ :D