Display a Zoho frame in a site with IE

Hi,
I have a form that don't run when displayed with Internet Explorer. IE return that:
Line -
Char 67682
Error: 'undifined' is null or not an object
Code: 0
Url: http://www.creator.zoho......

At this page... http://www.brasilemilano.it/br/consulares/fala-conosco.asp.

Thanks

Mic