doc: 'focus' option is not scrolling properly in demo page (Firefox)

[nelson6e65]

http://1000hz.github.io/bootstrap-validator/

When you left 'email' (for example) with errors and click Submit button while field is not visible, focus works but do not scrolls to field to make it visible in the page.

This occurs in Firefox; in Chrome works fine.

[1000hz]

Looks like I need to select $('html, body') for scrolling instead of just $(document.body) for better cross-browser support.

[nelson6e65]

Actually, in my project I had to use $("#page-wrapper") due to my layout, because I had the same issue if I use $('html, body'). 😔

After I update to v0.10.1, it works the focus in my layout without include #128.

$("#page-wrapper").stop().animate({ scrollTop: 0 }, 500, 'swing', function() {
    $(".has-error:first :input").focus();
});

But, I think the problem is about 'animate' 😅. So I was about to just left $(".has-error:first :input").focus(); without animation because I didn't got any clue how to scroll animation to my exactly field with errors.