// when the DOM is ready...
$(document).ready(function () {

	var $panels = $('#slider .scrollContainer .panel');
	var $container = $('#slider .scrollContainer');

	// 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 = $('#slider .scroll').css({
		'overflow': 'hidden',
		'width': '884px'});
	
	var $slider = $('#slider')

	// apply our left + right buttons
	$scroll
		.before('<div id="bt-l" class="scrollButtons left" href="#" title="Previous"><span>Previous</span></div>')
		.before('<div id="bt-r" class="scrollButtons right" href="#" title="Next"><span>Next</span></div>');
		        
    // handle nav selection
    function selectNav() {
        $(this)
            .parents('ul:first')
                .find('a')
                    .removeClass('selected')
                .end()
            .end()
            .addClass('selected');
    }
	
	$('#slider .navigation').find('a').click(selectNav);

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

    if (window.location.hash) {
        trigger({ id : window.location.hash.substr(1) });
    } else {
        $('ul.navigation 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: '.thumb a',

			// selectors are NOT relative to document, i.e. make sure they're unique
			prev: 'div.left', 
			next: 'div.right',

			// allow the scroll effect to run both directions
			axis: 'xy',

			//onAfter: trigger, // our final callback

			offset: offset,

			// duration of the sliding effect
			duration: 500,

			// easing - can be used with the easing plugin: 
			// http://gsgd.co.uk/sandbox/jquery/easing/
			easing: 'swing'
	};

	// 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.
	$('#slider').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);


});