jQuery one page scrolling site - animated deep linking

Question

I'm working on a one page scrolling site (with a sticky header) and want to add animated deep linking.

You can view the demo here:
http://www.creativecontroller.com/demo/onepage/

Here's what I'm trying to achieve:
- click on nav link, animate to div - in this case I'm using html5 sections (Done)
- have the hashtag displayed in the url like ...demo/onepage/#about
- if the user clicks another link, it animates, updates the url hashtag and animates to the right div
- if the user clicks the back button it animates back to the previous div instead of just snapping to it
- try to do this without using any plugins (just jQuery)

Here's the jQuery I'm using for the page scrolling and sticky header:

// Page scrolling
$(function() {
    $('a').bind('click',function(event){
        var $anchor = $(this);

        $('html, body').stop().animate({
            scrollTop: $($anchor.attr('href')).offset().top - 60
        }, 1500,'easeInOutExpo');

        event.preventDefault();
    });
});


// Sticky Nav
$(window).scroll(function(e) {
    var nav_anchor = $(".nav_anchor").offset().top;

    if ($(this).scrollTop() >= nav_anchor && $('.nav').css('position') != 'fixed') 
    {    
        $('.nav').css({
            'position': 'fixed',
            'top': '0px'
        });

        $('.nav_anchor').css('height', '60px');
    } 
    else if ($(this).scrollTop() < nav_anchor && $('.nav').css('position') != 'relative') 
    {   

        $('.nav_anchor').css('height', '0px');

        $('.nav').css({
            'position': 'relative'
        });
    }
});

Any help would be appreciated, thanks!

UPDATE:
I found a site that does what I've described above:
http://www.maddim.com/demos/spark-r6/

Answer 1

First, change your anchor tags from absolute to relative URL's (href="#about" rather than href="http://blahfdsjkld.com#about"). Then update your function like so:

// Page scrolling
$(function() {
    $('a').bind('click',function(event){

        // Do this first
        event.preventDefault();

        var $anchor = $(this);
        $('html, body').stop().animate({
            scrollTop: $($anchor.attr('href')).offset().top - 60
        }, 1500,'easeInOutExpo');

        // Use an id that isn't on the page, hence the capitalization of the first letter
        window.location.hash = $anchor.html().charAt(0).toUpperCase() + $anchor.html().slice(1);
    });
});