Is there a CSS selector for disabled input type="submit"
or "button"
?
Should I just use input[type="submit"][disabled]
?
Does that work in IE6?
Does that work in IE6?
No, IE6 does not support attribute selectors at all, cf. CSS Compatibility and Internet Explorer.
You might find How to workaround: IE6 does not support CSS “attribute” selectors worth the read.
EDIT
If you are to ignore IE6, you could do (CSS2.1):
input[type=submit][disabled=disabled],
button[disabled=disabled] {
...
}
CSS3 (IE9+):
input[type=submit]:disabled,
button:disabled {
...
}
You can substitute [disabled=disabled]
(attribute value) with [disabled]
(attribute presence).