Hide home button link on page

[jackvull]

I have a page on a server with a link at the top left to go back to the main menu where lots of different options are presented.
One of our clients would like to display a page within a frame on a different server. On that server they do not want to let people have a link back to a main menu.
How can I read with code that the request has come from a frame on a different server?

HTML on the new server would look like this:
<frame src='http://1.1.1.1/somepage.php'
</frame>

Thanks,
Jack

[jackvull]

The problem is that when it's referred through a frame or iframe the $_SERVER['HTTP_REFERER'] variable always shows up the same

[jatar_k]

for the framed page, if they don't allow a link back to the main, then is the link in the outer frame? If so you could maybe add a string to the link.