I use the full sitemap in a dropdown div. 'Drilling up' is easy. You have the section links in the nav bar, like the blue one above. But sometimes, you see sites try to show the next level of categories once you get to a new page, or by mousing over the nav bar. But if the site starts to grow, how much can you do of that?

Since there probably already is a sitemap, it's the quickest way to drill down. The way I do it is to allow a brief 1.5 second pause, and then the hover will open the next level down in the treeview (I don't actually use a treeview, just an indented sitemap listing). Since one sitemap probably won't do, the generator creates multiple sitemaps at different directories where required, and these links together. It's a very, very quick way to get into the site, to a particular page.

Of course, this suggests the use of an iframe, because these sitemaps are stand-alone hard coded pages, which don't have to be viewed in a little box (that's just convenient, you could literally link to the actual site map pages, full page). But one could also use object and load it with "data" instead of an iframe's "src". IE might have problems. But FF and Opera will work with that.

Hmmm. I'm trying to understand. Do you think you could message me a link to an example?