The site shows widgets from all countries of the world. It has a large navigation consisting of links to each country of the world as category. The problem is how to handle it best. There are 2 options:
1. Using an iframe for the list of countries (which gets for sure indexed by Google, so this won't be an issue);
2. Showing them in a scrollable div, meaning that all the links will be in the source code of every page, passing pagerank and everything since its not ok to make the main navigation nofollow
3. Showing only the list of continents and making a page for each countries from that continent
Which option you think is the best ?