[Typo3] replicate content in multi-domain site

[Loek Hilgersom]

I'm setting up a site which consists of several small websites, each of 
which has their own domain. Each small site has its own content, except for 
a few pages like Contact. (So that a change on the contact page would 
immediately affect all sites)

The domains point at different sub-trees, but Typo3 won't let me refer a 
page (type Advanced, show content of different page) to a page outside that 
tree (because of the domain record). I also tried to place that page in the 
repository, but still it is not shown.

Suggestions how to solve this?

Loek