Would you not be better off having a select menu at the top of the page to go to different domains.

There is an example: www.alpine.com

this way you don't break any rules and search engine can spiders all of them having the links properly displayed.

__________________
:. Web Design & Development Web Design Ireland
:. Search Engines Optimization Search Engines Optimization
:. Directory Submission Directory Submission
:. News & Press Release Ireland GiveItSocks.com
:. Used Cars Ireland, Car Parts & Car Audio Cars For Sale, Car Parts & Accessories
:. I Have 2 Find It Directory SEF Directory