Since I didn't want to have separate .jsp files for each language I decided
to pass the change of language to the calling page itself.
Such as this:
page.jsp?language=en
The spider will (hopefully) treat the pages "page.jsp?language=en", "page.jsp" and "page.jsp?language=no" as different pages and thus indexing all of them.
I'm not a webspider expert so I wouldn't know for sure. I remember reading something about some spiders not indexing urls with "?" and "&"
Any comments on this approach?