// 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( $ ){
 
	$('#slideshow').serialScroll({
		items:'li',
		prev:'#screen2 a.prev',
		next:'#screen2 a.next',
		offset:-11, //when scrolling to photo, stop 11 before reaching it (from the left)
		start:0, //start at the 1st
		duration:1000,
		interval:4000,
		force:true,
		stop:true,
		lock:true,
		cycle:true, //pull back once you reach the end
		easing:'easeOutQuart', //use this easing equation for a funny effect
		jump: false //click on the images to visit links	
	});
	
	/**
	 * 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
	});
});