Thanks, that works.
And is there any way to add some non-cms page located on the same site?
For example, I need to have "Logoff" link in menu. There is already /logoff.aspx page. Can I somehow include it to menu?
Of course, I can add full url like "http://www.mysite.com/logoff.aspx", but this solution is not good as it does not support migration from development to qa environment (now I just copy the web site files and database).