Looks like Firefox gives you `document.getElementById` with `$`. You need $$("selector") for `document.querySelectorAll`. Or rather, it looks like it does somet

Looks like Firefox gives you `document.getElementById` with `$`. You need $$("selector") for `document.querySelectorAll`. Or rather, it looks like it does something like `[...document.querySelectorAll(arg)]` (it returns an `Array` not a `NodeList`.)