iframe on a single tab

Hi, is it possible to insert an iframe in one tab?
I try with xhtml content type and with module position but I receive this error:

Unable to display this content in a frame
To facilitate the protection of information entered into this Web site, the author does not allow content to display in a frame.
You can try: Open this content in a new window

You can see this error on second tab (Posizione) of this page: http://demo.lifecolor.eu/3t/index.php?o ... Itemid=453

Can you help me?
Thanks in advance
Life Color

Hi,

Can you please send me a PM to provide with backend access to take a look on your settings?

Thanks,

Hi,

I'm glad to know you have solved it yourself, what was the problem by the way?