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

    var $panels = $('#slider .scrollContainer > div');
    var $container = $('#slider .scrollContainer');
	
	var $panels_ref = $('#slider_ref .scrollContainer_ref > div');
    var $container_ref = $('#slider_ref .scrollContainer_ref');
	
	var $panels_presta = $('#slider_presta .scrollContainer_presta > div');
    var $container_presta = $('#slider_presta .scrollContainer_presta');

    // 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
        });
		$panels_ref.css({
            'float' : 'left',
            'position' : 'relative' // IE fix to ensure overflow is hidden
        });
		$panels_presta.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+1));
		
		$container_ref.css('width', $panels_ref[0].offsetWidth * $panels_ref.length);
		
		$container_presta.css('width', $panels_presta[0].offsetWidth * $panels_presta.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');
	
	var $scroll_ref = $('#slider_ref .scroll_ref').css('overflow', 'hidden');

	var $scroll_presta = $('#slider_presta .scroll_presta').css('overflow', 'hidden');

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

    $('#slider .navigation').find('a').click(selectNav);
	
	$('#slider_ref .navigation_ref').find('a').click(selectNav);
	
	$('#slider_presta .navigation_presta').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);
    }
	
	function trigger_ref(data) {
		var el_ref = $('#slider_ref .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el_ref);
    }
	
	function trigger_presta(data) {
		var el_presta = $('#slider_presta .navigation').find('a[href$="' + data.id + '"]').get(0);
        selectNav.call(el_presta);
    }	

    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 offset_ref = parseInt((horizontal ? 
        $container_ref.css('paddingTop') : 
        $container_ref.css('paddingLeft')) 
        || 0) * -1;
	
	var offset_presta = parseInt((horizontal ? 
        $container_presta.css('paddingTop') : 
        $container_presta.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: '.navigation a',


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

        onAfter: trigger, // our final callback

        offset: offset,

        // duration of the sliding effect
        duration: 250,

        // easing - can be used with the easing plugin: 
        // http://gsgd.co.uk/sandbox/jquery/easing/
        easing: 'swing'
    };
	
	var scrollOptions_ref = {
        target: $scroll_ref, // the element that has the overflow

        // can be a selector which will be relative to the target
        items: $panels_ref,

        navigation: '.navigation_ref a',

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

        onAfter: trigger_ref, // our final callback

        offset: offset_ref,

        // duration of the sliding effect
        duration: 1,

        // easing - can be used with the easing plugin: 
        // http://gsgd.co.uk/sandbox/jquery/easing/
        easing: 'swing'
    };
	
	var scrollOptions_presta = {
        target: $scroll_presta, // the element that has the overflow

        // can be a selector which will be relative to the target
        items: $panels_presta,

        navigation: '.navigation_presta a',

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

        onAfter: trigger_presta, // our final callback

        offset: offset_presta,

        // duration of the sliding effect
        duration: 1,

        // 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);
	
	$('#slider_ref').serialScroll(scrollOptions_ref);
	
	$('#slider_presta').serialScroll(scrollOptions_presta);

    // 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);

});