Would someone be intelligent and kind enough to solve my problem?

I'm having trouble with my login module. I would like to have text "Kirjaudu intraan" in the Login link in the upper right corner. I've been changing some language files so that now the right text appears on the login button, in the login page title and also in the login link when I click the Intra tab in the menu. But when clicking the other menu tabs, the text changes to "Kirjaudu" which is the default translation. What am I missing?
Here is the link to the site:
http://www.planicon.fi