12. A method of recording a user-viewable stimulus, the method comprising: recording a user-viewable stimulus at a first time, the recording comprising: detecting a visual event; receiving information specifying the detected visual event; observing one or more visual characteristics of the visual event; verifying that the visual characteristics involve one or more parameters that affect how the visual event is displayed; recording at least one of the one or more parameters; and recreating, at a second time different from the first time, at least a portion of the user-viewable stimulus by: reading one or more of the recorded parameters; and reconstructing at least a part of the visual event wherein the visual characteristics corresponding to the recorded parameters are included in the reconstructed part of the visual event.
21. The method of claim 12 wherein one or more visual characteristics is one or more of a size and location of a child window within a parent window.