I have onepage site and I use gsap for all animations there, incl. smooth scroll with anchor links, something like this http://codepen.io/anon/pen/bxaHz
Now I want combine this smooth scroll functionality with history.js plugin https://github.com/browserstate/history.js/ , so that users had the opportunity to go back and forward through the site. But I failed to do that.
Here is what I have atm http://codepen.io/anon/pen/jzymf as you can see page jumps to the top when you click back or forward, and only then scrolls.
I would really appreciate any help.
Thank you very much!