Facebook popup dialog available?

Is it possible to show users custom message with a single OK button in a Facebook-style dialog box, say, in an iframe app? Is this dialog box avai开发者_高级运维lable in the Facebook (Javascript) API?

Example:

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I don't believe that Facebook allows you to display dialogs outside the ones listed in the FB:Dialog documentation on their webpage.

However, this should be possible to implement yourself. Download a copy of the Facebook.js SDK, and look for the code where it draws the dialog. You could then use this wherever you want to draw as many Facebook-esque dialogs as you like!

Edit: This thread from the Facebook developers forum has some good stuff on already-developed FB.ui lightbox clones: reuse facebook lightbox JS