in_place_editor_field and ok_button

I don't know if this will actually work, I've only used
in_place_editor_field once, but have you tried hiding it through the
css?

form.inplaceeditor-form input[type="submit"]
  display: none;
}

Worth a try...

I believe attribute selectors aren't recognised in MS IE 6.0, therefore the style won't be applied.

Regards,
Serdar
http://weblog.kilic.net/