That is odd.. I tried IE7 and it worked fine to show the two search options after logging in (see below).
I did find two annoying JavaScript 'breaks' in the smfFader javascript, so I'll work on correcting that.
Mark, would you post a screen capture of your display-without-search-options?
I'll look around to see if there's a mod for searching for posts last 72hrs/last week available.
Thanks,
Ken