Preview of another web page in a tooltip

Preview of another web page in a tooltip

Hi people,
              This is my first quetion in this forum and I've maybe a crazy idea.
              
               I'm wondering if exist a jquery plugin or something like that that permits me to see a preview of other webpage in a tooltip when I pass over a link. 

             Somebody in #jQuery irc channel told me about http://www.snap.com/ (I haven't seen this yet)

            ¿Could be this something possible to do with jQuery? 
            ¿Anybody has some in mind?


Anyway, many thanks for any help or idea.

Greetings. 

                                                                  Cesar
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skype: cesarstafe