location.hostname denied.

Do not have permission for location.hostname

[Armadillo]

I am attempting to prevent my framed page from being loaded outside of its frame, or within the frame of another site.
I have tried this code.

if (top == self ¦¦ (top.location.hostname!=self.document.location.hostname))
 window.location.href = 'http://mysite.com/photos.html';

and this code.

if (top == self ¦¦ ((top.location.hostname != 'mysite.com')&&(top.location.hostname != 'www.mysite.com')))
 window.location.href = 'http://www.mysite.com/photos.html';

In both cases, it prevents the page from loading outside the frame. But it allows the page to be loaded within a frame on another site in both IE7 and FF3.
The FF error console says permission is denied for location.hostname.
I know this used to work, so I'm guessing new browsers have some security preventing this. Is there any way around the issue?

[daveVk]

Security probably preventing this: top.location.hostname. Try catching error, something like.

try
{
if (top == self ¦¦ (top.location.hostname!=self.document.location.hostname))
window.location.href = 'http://mysite.com/photos.html';
}
catch(err)
{
window.location.href = 'http://mysite.com/photos.html';
}

[Armadillo]

Cool.
I used top.window.location.href to prevent an endless reload loop in a frame, but it worked.
Thank you very much.