Issues | Jumping scroll fixed!

After two hours looking for a problem in my jquery I started searching the internet for new bits of code to add to my jquery. After trying a few I came across this fix:



Try changing this line:

$(scrollElem).animate({scrollTop: targetOffset}, 1000, function() {
  location.hash = target;
});
To:

 $(scrollElem).animate({scrollTop: targetOffset}, 1000, function() {    
    if(history.pushState) {
        history.pushState(null, null, target);
    }
    else {
        location.hash = target;
    }
});


(Link: http://stackoverflow.com/questions/11007929/jquery-smooth-scroll-jumps-upon-first-load-i-with-fixed-side-bar)

It's completely sorted the jumping during a smooth scroll. I knew it was something to do with the .animate line but i couldn't understand what I was mean't to change it too. Below is a video of the fixed smooth scroll!