Does anyone know how to hide content using iFrame?

Hai B-Hatter,

I'm used with FBML and normally i'll use the hide code for non-fans and fans visibility. But moveing forward everything will be iFrame, does anyone know how to implement this in HTML?

I mean all those like fb:dialog and others also i assume will not work well in HTML. Can anyone share with me the code especially on how to set teh visibility?

Thanks in advance.