Its available on FB coz when you check the developer doc's on facebook and try the like button, it shows the pop-up. There's a plugin called "Digg Digg" that shows the same thing. But unfortunately I can NOT make it to work using manual placement. Hopefully it will be applied to this plugin too.
Also some notes that might help resolve this:
When I click the Like button, the popup window (or "flyout") doesn't show. Why?
If the Like button is placed near the edge of an HTML element with the overflow property set to hidden, the flyout may be clipped or completely hidden when the button is clicked. This can be remedied by setting the overflow property to a value other than hidden, such as visible, scroll, or auto.
Source: bottom part of: