Mozilla Bug 238987


Test:

type="text"
type="button"
type="checkbox"
type="radio" checked
type="radio"
type="password"
type="file"
button
select
aa link
tabindex="0"span

Form elements with tabindex="-1"

type="text"
type="button"
type="checkbox"
type="radio" checked
type="radio"
type="password"
type="file"
button
select

Form elements with .setAttribute("tabindex", "-1")

type="text"
type="button"
type="checkbox"
type="radio" checked
type="radio"
type="password"
type="file"
button
select

done.