// Easing equation, borrowed from jQuery easing plugin
// http://gsgd.co.uk/sandbox/jquery/easing/
jQuery.easing.easeOutQuart = function (x, t, b, c, d) {
	return -c * ((t=t/d-1)*t*t*t - 1) + b;
};

jQuery(function( $ ){
	/**
	 * Most jQuery.serialScroll's settings, actually belong to jQuery.ScrollTo, check it's demo for an example of each option.
	 * @see http://flesler.demos.com/jquery/scrollTo/
	 * You can use EVERY single setting of jQuery.ScrollTo, in the settings hash you send to jQuery.serialScroll.
	 */
	
	/**
	 * The plugin binds 6 events to the container to allow external manipulation.
	 * prev, next, goto, start, stop and notify
	 * You use them like this: $(your_container).trigger('next'), $(your_container).trigger('goto', [5]) (0-based index).
	 * If for some odd reason, the element already has any of these events bound, trigger it with the namespace.
	 */		
	
	/**
	 * IMPORTANT: this call to the plugin specifies ALL the settings (plus some of jQuery.ScrollTo)
	 * This is done so you can see them. You DON'T need to specify the commented ones.
	 * A 'target' is specified, that means that #screen is the context for target, prev, next and navigation.
	 */
//	$('#screen').serialScroll({
//		target:'#sections',
//		items:'li', // Selector to the items ( relative to the matched elements, '#sections' in this case )
//		prev:'img.prev',// Selector to the 'prev' button (absolute!, meaning it's relative to the document)
//		next:'img.next',// Selector to the 'next' button (absolute too)
//		axis:'xy',// The default is 'y' scroll on both ways
//		navigation:'#navigation li a',
//		duration:700,// Length of the animation (if you scroll 2 axes and use queue, then each axis take half this time)
//		force:true, // Force a scroll to the element specified by 'start' (some browsers don't reset on refreshes)
//		
		//queue:false,// We scroll on both axes, scroll both at the same time.
		//event:'click',// On which event to react (click is the default, you probably won't need to specify it)
		//stop:false,// Each click will stop any previous animations of the target. (false by default)
		//lock:true, // Ignore events if already animating (true by default)		
		//start: 0, // On which element (index) to begin ( 0 is the default, redundant in this case )		
		//cycle:true,// Cycle endlessly ( constant velocity, true is the default )
		//step:1, // How many items to scroll each time ( 1 is the default, no need to specify )
		//jump:false, // If true, items become clickable (or w/e 'event' is, and when activated, the pane scrolls to them)
		//lazy:false,// (default) if true, the plugin looks for the items on each event(allows AJAX or JS content, or reordering)
		//interval:1000, // It's the number of milliseconds to automatically go to the next
		//constant:true, // constant speed
		
//		onBefore:function( e, elem, $pane, $items, pos ){
//			/**
//			 * 'this' is the triggered element 
//			 * e is the event object
//			 * elem is the element we'll be scrolling to
//			 * $pane is the element being scrolled
//			 * $items is the items collection at this moment
//			 * pos is the position of elem in the collection
//			 * if it returns false, the event will be ignored
//			 */
//			 //those arguments with a $ are jqueryfied, elem isn't.
//			e.preventDefault();
//			if( this.blur )
//				this.blur();
//		},
//		onAfter:function( elem ){
//			//'this' is the element being scrolled ($pane) not jqueryfied
//		}
//	});
//	
	/**
	 * No need to have only one element in view, you can use it for slideshows or similar.
	 * In this case, clicking the images, scrolls to them.
	 * No target in this case, so the selectors are absolute.
	 */
	
	$('#slideshow').serialScroll({
		items:'li',
		prev:'#leftArrow img',
		next:'#rightArrow img',
		offset:-110, //when scrolling to photo, stop 230 before reaching it (from the left)
		start:1, //as we are centering it, start at the 2nd
		duration:1200,
		force:true,
		stop:true,
		lock:false,
		cycle:false, //don't pull back once you reach the end
		easing: 'easeOutQuart', //use this easing equation for a funny effect
		jump: false //click on the images to scroll to them
	});
//	
	/**
	 * The call below, is just to show that you are not restricted to prev/next buttons
	 * In this case, the plugin will react to a custom event on the container
	 * You can trigger the event from the outside.
	 */
	
//	var $news = $('#news-ticker');//we'll re use it a lot, so better save it to a var.
//	$news.serialScroll({
//		items:'div',
//		duration:2000,
//		force:true,
//		axis:'y',
//		easing:'linear',
//		lazy:true,// NOTE: it's set to true, meaning you can add/remove/reorder items and the changes are taken into account.
//		interval:1, // yeah! I now added auto-scrolling
//		step:2 // scroll 2 news each time
//	});	
//	
//	/**
//	 * The following you don't need to see, is just for the "Add 2 Items" and "Shuffle"" buttons
//	 * These exemplify the use of the option 'lazy'.
//	 */
//	$('#add-news').click(function(){
//		var 
//			$items = $news.find('div'),
//			num = $items.length + 1;
//			
//		$items.slice(-2).clone().find('h4').each(function(i){
//			$(this).text( 'News ' + (num + i) );
//		}).end().appendTo($news);
//	});
//	$('#shuffle-news').click(function(){//don't shuffle the first, don't wanna deal with css
//		var shuffled = $news.find('div').get().slice(1).sort(function(){
//			return Math.round(Math.random())-0.5;//just a random number between -0.5 and 0.5
//		});
//		$(shuffled).appendTo($news);//add them all reordered
//	});
});