"Aristo" for jQuery UI
Never noticed this before: the auto-complete appears under the slider handles (Chrome 10).  Shall test for other browsers in a bit...edit:  Chrome 12 Canary: same as Chrome 10
  IE9 beta: Handles on top, buttons look fine, though no text shadow.  "" are poorly anti-aliased.
  IE9 beta in compatibility mode: auto-complete on top (?), but buttons (aside from href) are full-width.  "" are poorly anti-aliased.
  FF4 rc:   Handles on top.  "" are poorly anti-aliased.
  FF3.6.15: Handles on top.  "" are poorly anti-aliased.