The submission buttons should not be named so they produce nested hashes. For example, a submit button named submit[preview],
will not work correctly with MSIE when it is replaced with an image submit button.

Instead, the button in the example eabove should be named {submit_preview.

This will require changes to unit tests, controllers and views.

See http://dev.rubyonrails.org/ticket/5825 for additional description of this problem.