javascript to set document.form.action broken in FF31

[matt_firefox]

The javascript used to set a form's action seems to be broken, e.g.

document.getElementById('myform').action = 'submit.php'

I searched around and it seems like this was also temporarily broken in previous versions as well.

Anything I can do to help get this fixed? It's affecting users of our site.

Thanks.

[Frenzie]

Maybe document.getElementById('myform').setAttribute('action', 'submit.php')? A testcase always helps.