Multi-level navigation and easy menu definition

[mvlcek]

I mean that the menu is not displaying the pages of level 3. I PM'd you the details.

Just checked your site and didn't find a problem:
When you click on 1st-level page demographics, all pages of level 2 below demographics are shown.
When you click on 2nd-level page population, all pages of level 3 below population are also shown.

If you want to show the whole navigation hierarchy independent of the current page, use I18N_SHOW_MENU as 4th parameter of get_i18n_navigation.

Otherwise you should think about formatting the current navigation page different (e.g. bold) - it has the css class current. To show the user which pages have sub pages, use different styles for the css classes open and closed.