In IE 8, the name and value of <button> elements of type button
will be sent as part of the form's dataset when the form is submitted. This is a bug,
as only <button>s of type "submit" should submit their data, and
only when they are clicked.
To reproduce the bug, click the <button> labeled "Submit Button"
and see how the name and value of the <button> labeled
"Push Button" end up in the form's dataset.