If I use the search then try to click a nav link the page 404s- presumably because it take me to an https connection when there is none. On top of that, if I try to go back to the home page it keeps bringing me to the search.

*I see why it does that. After you search/go somewhere you "lock out" the home tab. What you might want to try doing is looking at the URL. if "invite" in url then change the colour. A bit of javascript can clean that up, and if the browser doesn't support it the tabs will just stay grey. No harm, no foul.

Even after I get back you still do not let me go all the way back. I am literally stuck in the search, and the only way to see the homepage again is to disable cookies. I like ajaxy stuff as much as the next person, but it's set up wrong in this case.

If I am not logged in and try to view "my sets" i get a 404- http://www.fashionistapals.com/menu/my-sets. Instead direct the user to an example set page with the option to join up.