How do I match classes on buttons only?

How do I match classes on buttons only?

Hi,

I'm using the latest version of JQuery.  How do write an expression to match multiple classes, but only for elements that are inputs of type="button" or type="submit"?  I have figured out how to match multiple classes with the expression ...

$('.cancelAction, .userLogOut').unbind('click');

but have not yet figured out how to apply that to only input buttons.  Thanks, - Dave