Hi,
Unfortunately, it does not. It does behave differently - I stillcan't view it within the google docs viewer but *can* download it. So it is slightly better but still fails the validation, I should think.
To test, you just need a publicly accessible URL for a document (generated by the library) and embed that URL in the following one for Google:https://docs.google.com/viewer
The link points to a test page.
regards
Chris Cardinal