safariwatir - clicking a dialog box

Not hopeful that anyone else is doing this but I thought I'd try.
safariwatir is a pretty fun way to test an app by remote controlling the
browser. Seems to work well. Useful.

One thing though (and I think this horse has been flogged before but I
can't find an answer). In "safariwatir" specfically; any tips on dealing
with the pop up that occurs when you click delete in a rails app. e.g.
the standard pop up you get when you've created a scaffold?