$(document).ready(function () {

	var $panels = $('#contentBox .panel');
	var $container = $('#contentBox .content');
	var $scroll = $('#contentBox .scroll');

    // if false, we'll float all the panels left and fix the width of the container
    var horizontal = true;

    // float the panels left if we're going horizontal
    if (horizontal) {
        $panels.css({
            'float' : 'left',
            'position' : 'relative' // IE fix to ensure overflow is hidden
        });

        // calculate a new width for the container (so it holds all panels)
        $container.css('width', $panels[0].offsetWidth * $panels.length);
    }

    // collect the scroll object, at the same time apply the hidden overflow to remove the default scrollbars that will appear
    var $scroll = $('#contentBox .scroll').css('overflow', 'hidden');

    // handle nav selection
	function selectNav() {
		$(this)
			.parents('ul:first')
				.find('a')
					.removeClass('nav_active')
				.end()
			.end()
			.addClass('nav_active');
    }

    $('#contentBox #nav a').click(selectNav);

    // go find the navigation link that has this target and select the nav
    function trigger(data) {
        var el = $('#contentBox #nav').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el);
    }

    if (location.hash) {
        trigger({ id : location.hash.substr(1) });
    } else {
        $('ul#nav a:first').click();
    }

    // offset is used to move to *exactly* the right place, since I'm using padding on my example, I need to subtract the amount of padding to the offset.  Try removing this to get a good idea of the effect
    var offset = parseInt((horizontal ? 
        $container.css('paddingTop') : 
        $container.css('paddingLeft')) 
        || 0) * -1;

    var scrollOptions = {
        target: $scroll, // the element that has the overflow can be a selector which will be relative to the target
        items: $panels,
        navigation: '#nav a',
        // allow the scroll effect to run both directions
        axis: 'xy',
        offset: offset,
        // duration of the sliding effect
        duration: 500,
        // keep speed constant (versus time)
        constant: false,
        // easing - can be used with the easing plugin: http://gsgd.co.uk/sandbox/jquery/easing/
        easing: 'easeInOutExpo',
        onAfter: trigger // our final callback
    };

    // apply serialScroll to the slider - we chose this plugin because it supports the indexed next and previous scroll along with hooking in to our navigation.
    $('#contentBox').serialScroll(scrollOptions);

    // now apply localScroll to hook any other arbitrary links to trigger the effect
    $.localScroll(scrollOptions);

    // finally, if the URL has a hash, move the slider in to position, setting the duration to 1 because I don't want it to scroll in the very first page load.  We don't always need this, but it ensures the positioning is absolutely spot on when the pages loads.
    scrollOptions.duration = 1;
    $.localScroll.hash(scrollOptions);

});