> Re-updating subject. Does anyone have an answer ? The `container` el needs to be inside a positioned element other than the body.
Under IE, getOffsetParent() walks up the tree looking for a non-static, non-body element, and returns null if it can't find a match. I don't know why it doesn't return the body as does the native .offsetParent. It must be working around an IE bug. See 1.2.4-Core:2478. -- Sandy
