buttons need type="submit" to submit in IE

In a typical round of doing Internet Explorer clean up at the end of a
project, I had to figure out why my

<button>Submit</button>

wasn't submitting a form in IE.

I did a search on "html button" and went to the w3c HTML
4.01 specifications
:

type = submit|button|reset [CI]

This attribute declares the type of the button. Possible values:

submit: Creates a submit button. This is the default value.

reset: Creates a reset button.

button: Creates a push button.

So the default is submit. But Internet Explorer has obviously
forgotten this in IE6 and IE7. I found it worked without type="submit"
in Firefox, Safari, Chrome and Opera. I haven't tested in IE8 because I
don't have it installed. Maybe someone wants to check it out? Here
is a demo page.

So I guess we should get in the habit of using:

<button type="submit">Submit</button>