document.body is null

[HarmlessDave]

In Firefox and possibly Edge and Safari the F12 console will show document.body is null and Arrow() will be undefined.

Fix: wrap all of arrow.js into an initialization function and call that before the first use of Arrow. An example called from < body onLoad >

init_arrow();
Arrow.show(8000);

[KINGSABRI]

Thanks @HarmlessDave It works like a charm!

I faced the same issue on Google Chrome (Version 97.0.4692.99)