accesskey should not function on inert content about inert

[rodneyrehm]

Setting input elements to disabled prevents the accesskey behavior. If that's not an option things may get a bit tricky. Here's an excerpt of accesskey behavior tests I did ~2 years ago:

Chrome will not focus a link, but execute its default action (navigate to href), while Trident will focus the <a> element and not perform the default action. Trident does not dispatch click events (the default activation of otherwise non-interactive elements), except for <input> elements. Chrome on Windows won't dispatch a click event for <input type="checkbox">