Load forms into Colorbox Ajax

Question

Hi there.

I can load a page from the same subdomain into my Colorbox implementation such as alt.example.com/sample.aspx but when I try to load a form from the same domain but on another subdomain such as quote. ) from the same domain, it does not like this.

Is there something I am not understanding? As far as I am aware, problem only arise when you try and open a file from another domain in an AJAX window.

Thanks all!