JQuery :: Navigation Selections - Gallery Loads And Animate Contents

I have a gallery which loads in and animates content based on different navigation selections. There is also a background image which changes on click. I've just found that on opera and safari, the appropriate images aren't always loaded. When you click the navigation, it loads a set of subnavigation(via load() method), which then links to specific images. My issue, is that sometimes, the navigational items, when clicked, load in the appropriate content from the previous set of navigational items. It only does it sometimes, so it makes it tough for me to see if its a problem with my code or...Keep in mind this is Opera, and Safari specific, and only happens sometimes, so if you don't notice right away, click a few more times (usually happens after clicking the second level navigation). Code is also below.

$(document).ready(function() {
// Check for hash value in URL
var hash = window.location.hash.substring(1);
var href = $('#project_navigation ul li a').each(function(){
var href = $(this).attr('href');
if(hash==href.substr(0,href.length-4)){
$(this).addClass("current");
var content = hash+ '.php #work';
var subnavigation = hash+'.php #project_subnavigation';
var gallery = hash + '.php #showcase_holder';
var copy = hash + '.php #inner_holder';
$('#bg').addClass(hash + 'bg');
$('#content').load(content);
}}); .....