Hashchange on click, trigger click when coming from another site

Question

I have implemented this to my wordpress theme, and I'm trying to figure out, how to implement the hashchange, when I click a link inside a folder. I've tried to use this tutorial to trigger the hashchange. The hashchange works, when i comment out the "Load permalink to .itemContent" , but then the item slides down and up instantly. When its not commented out, the hashchange doesn't trigger.

Also, if someone copys the http://www.pathtomydomain.com/#/item-name-1 to the address bar (or bookmarks it), how to open the folder according to the url? Something to to with .trigger(click)?

HTML

<div id="container">    
<div class="item">
<a href="http://pathtomydomain.com/item-name-1">
<img src="an-image-1.jpg" />
</a>
</div>

<div class="item">
<a href="http://pathtomydomain.com/item-name-2">
<img src="an-image-2.jpg" />
</a>
</div>

<div class="item">
<a href="http://pathtomydomain.com/item-name-3">
<img src="an-image-3.jpg" />
</a>
</div>
</div>
<div class="itemContent"></div>

JQUERY

$.ajaxSetup({cache:false});

$('.item').click(function(){
        if($('.itemContent').is(":visible")){
            $('.itemContent').slideUp("fast", function(){  
        });

    } else if ($('.itemContent').is(":hidden")) {
        $('.itemContent').empty();
        $('.itemContent').html('<img class="loading" src="ajax-loader.gif"/>');
        $('.itemContent').slideDown("fast", function(){
            var $dock = $('#navigation'),
                dockHeight = $dock.height();
            $("html, body").animate({
                            scrollTop: $('.itemContent').offset().top - ( $(window).height() - dockHeight - $(this).outerHeight(true) ) / 2 

                            });

        });

    /*
    Load permalink to .itemContent . 
    */
    var post_link = $(this).children("a").attr("href");
        $(".itemContent").load(post_link);
        return false;

      }

});

var $mainContent = $(".itemContent"),
    siteUrl = "http://" + top.location.host.toString(),
    url = ''; 
$(document).delegate("a[href^='"+siteUrl+"']:not([href*=/wp-admin/]):not([href*=/wp-login.php]):not([href$=/feed/])", "click", function() {
    location.hash = this.pathname;
    return false;
}); 

$(window).bind('hashchange', function(){
    url = window.location.hash.substring(1); 
});
$(window).trigger('hashchange');