It works fine on Chrome but not on Firefox.

Hello,

I have a case where the page is already loaded when JS is running (in jquery.multiscroll.js)

 $(window).on('load', function() {
                scrollToAnchor();
                });

If I replace by this (it works)

            if (document.readyState == 'complete'){
                scrollToAnchor();
            }else{
                $(window).on('load', function() {
                scrollToAnchor();
                });
            }

If you need I can fork and do a pull request
Otherwise tell me where I am wrong

And thank you for the job done!!