/*

 * 	loopedSlider - jQuery plugin

 *	written by Nathan Searles	

 *	http://code.google.com/p/loopedslider/

 *

 *	Copyright (c) 2009 Nathan Searles (http://nathansearles.com/loopedslider/)

 *	Dual licensed under the MIT (MIT-LICENSE.txt)

 *	and GPL (GPL-LICENSE.txt) licenses.

 *

 *	Built for jQuery library

 *	http://jquery.com

 *

 */

(function($){

 	$.fn.extend({ 

 		loopedSlider: function(options) {

			

    		return this.each(function() {



				// set defaults

				var defaults = {

					container : 'container_slider_area',

					slideClass : 'slide',

					pagination : 'pagination_area',

					navButtons : 'nav-buttons-area', 

					fadeSpeed : 400,

					slideSpeed : 250,

					animateSpeed : 200,

					autoHeight : false,

					padding : 20,

					easing : 'easeOutQuad'

				};



				// set variables	

				var obj = $(this);

				var o = $.extend(defaults, options);

				var u = false;

				var w = obj.width(); 

				var h = obj.height();

				var f = $('.'+o.container, obj).find('div:first').attr('id');

				var l = $('.'+o.container, obj).find('div:last').attr('id');

				

				// funcitons

				function setToActive(c) {

					var current = $(c).attr('id');

					$('a[href$="'+current+'"]', obj).addClass('active');

				}

				

				// applies style to divs

				$('.'+o.container, obj).find('div').css({ 'z-index': 0, opacity: 0 });

				

				// load first slide

				$('.'+o.container, obj).find('div:eq(0)').animate({ opacity: 1.0 }, o.fadeSpeed, function() {						

					$(this).css({ 'z-index': 3 });				

					$(this).addClass('current');

					if (o.autoHeight===true) {

						// gets height of new slide

						var newHeight = $(this, obj).height() + o.padding;

						$('.'+o.container, obj).animate({'height': newHeight}, o.animateSpeed, o.easing);

					}

					setToActive(this);

				});		



				// fade code

				$('.'+o.pagination, obj).find('a').click(function(){

					if(u===false  && ($(this).hasClass('active')===false)) {

						u = true;

						// removes active

						$('a', obj).removeClass('active');



						// fades out current slide

						$('.'+o.container, obj).find('div').animate({ opacity: 0 }, o.fadeSpeed, function() {					

							$(this).removeClass('current');

							$(this).css({ 'z-index': 0 });				

						});



						// setsup value for new slide

						var x = 0;

						var parentId = $(this).attr('href');

						var parentSplit = parentId.split('-');

						x = ((parentSplit[1]*1));

						

						if (o.autoHeight===true) {

							// gets height of new slide

							var newHeight = $('#'+o.slideClass+'-'+(x), obj).height() + o.padding;

							$('.'+o.container, obj).animate({'height': newHeight}, o.animateSpeed, o.easing);

						}

						

						// fades in new slide

						$('#'+o.slideClass+'-'+(x), obj).animate({ opacity: 1.0 }, o.fadeSpeed, function() {

							$(this).css({ 'z-index': 3 });

							$(this).addClass('current');

							u = false;

							setToActive(this);		

						});

					}

					return false;

				});



				// slide code

				$('.'+o.navButtons, obj).find('a').click(function(){

					if(u===false) {

						u = true;

						var loop = false;

						var fLoop = f;

						var lLoop = l;



						// removes active state

						$('a', obj).removeClass('active');



						// flips directions

						if ($(this).hasClass('next')) {

							var nextD = -w;

							var previousD = w;

							var direction = +1;

						}

						if ($(this).hasClass('previous')) {

							nextD = w;

							previousD = -w;

							direction = -1;

						}



						// setup the loop

						if ($('#'+fLoop, obj).hasClass('current')) {						

							loop = 'first';

						}

						if (($('#'+lLoop, obj).hasClass('current'))) {

							loop = 'last';

						}



						// get the name of the new slide

						if ((loop==='first') && ($(this).hasClass('previous'))) {

							lLoop = lLoop.split('-');

							x = ((lLoop[1]*1));

						} else if ((loop==='last') && ($(this).hasClass('next'))) {

							fLoop = fLoop.split('-');

							x = ((fLoop[1]*1));

						} else {

							// setsup value for new slide

							var getCurrent = $('.'+o.container, obj).find('.current').attr('id');

							getCurrent = getCurrent.split('-');

							x = ((getCurrent[1]*1+direction));

						}



						// gets height of new slide

						if (o.autoHeight===true) {

							var newHeight = $('#'+o.slideClass+'-'+(x), obj).height() + o.padding;

							$('.'+o.container, obj).animate({'height': newHeight}, o.animateSpeed, o.easing);

						}

						

						// sets next slide to slide in position		

						$('#'+o.slideClass+'-'+(x), obj).css({ opacity: 1, left: previousD, 'z-index': 3 });

						

						// slides in new slide

						$('#'+o.slideClass+'-'+(x), obj).animate({ left: 0 }, o.slideSpeed, o.easing, function() {

							 try{

								  $(".ad_area_info .scroll_info").html($('#'+o.slideClass+'-'+(x)+" a img").attr("alt"));						

								}catch(e){}

							$(this).addClass('current');

							$(this).css({ opacity: 1 });

							u = false;

							// Sets active state for pagination a

							setToActive(this);						

						});

						

						// slides out current slide

						$('.'+o.container, obj).find('.current').animate({ 'left': nextD }, o.slideSpeed, o.easing, function() {					

							$(this).removeClass('current');

							$(this).css({ opacity: 0, left: 0, 'z-index': 0 });

						});

						

					}

				return false;

				});

			});

    	}

	});

})(jQuery);