/********************************

/* Copyright 2009 Tim Santeford *

/* All Rights Reserved          *

/********************************/

(function($){  

	

	$.fadeshow = {

		defaults: {

			interval: 8000,

			fadeSpeed: 800,

			randomStart: false,

			showNavigation:false,

			previousButton: '<div class="previous"></div>',

			nextButton: '<div class="next"></div>'

		}

	};



	$.fn.extend({

		fadeshow:function(config) {	

			

			config = $.extend({}, $.fadeshow.defaults, config);

	

			return this.each(function() { 

			

				// Initialize Elements

				var list = $(this);				

				var items = $('li', list);

				var $container = $(document.createElement("DIV"));

				$container.css('position','relative');

				$container.attr('id', list.attr('id')+'_container');

										

				list.before($container);

				$container.append(list);



				// Add Buttons

				var previousButton;

				var nextButton;

				if (config.showNavigation == true) {

					previousButton = $(config.previousButton);

					previousButton.hide();

					nextButton = $(config.nextButton);

					nextButton.hide();

					list.before(previousButton);

					list.before(nextButton);

					

					previousButton.click(function(){showPreviousItem(config.fadeSpeed/2);});					

					nextButton.click(function(){showNextItem(config.fadeSpeed/2);});	

				}

			

				// Fix List Style

				list.css('position', 'relative');

				//list.css('width', this.clientWidth);

			

				var maxh = 0;		

				var zIndex = items.length;

				items.each(function () {

					//$(this).css("zIndex", zIndex);	

					$(this).css("position", "absolute");

					$(this).css("left", "0px");

					$(this).css("top", "0px");

					zIndex = zIndex-1;

					var h = this.clientHeight;	

					if (h > maxh) { maxh = h; }	

					$(this).hide(); 

				});

				list.css('height', maxh);		

				

				var currentIndex = 0;

				if (config.randomStart == false) {

					$(items[currentIndex]).show();					

				} else { 

					currentIndex = Math.floor(Math.random()*items.length);

					$(items[currentIndex]).show();	

				}			

									

				// Event Wireup

				var rotateId = startRotate(config.interval);

				$container.hover(

					function () {

									clearInterval(rotateId);

									if (config.showNavigation == true) {

										previousButton.stop();

										previousButton.css('opacity', '1');

										previousButton.fadeIn('fast');

										nextButton.stop();

										nextButton.css('opacity', '1');

										nextButton.fadeIn('fast');

									}

								}, 

					function () {

									rotateId = startRotate(config.interval);

									if (config.showNavigation == true) {

										previousButton.stop();	

										previousButton.fadeOut('fast');

										nextButton.stop();

										nextButton.fadeOut('slow');

									}

								}

				);

				

				

				

				// Helper Methods

				function startRotate(interval) { 

					return setInterval(function () {

						showNextItem(config.fadeSpeed);

					}, interval);

				}

				

				function showNextItem(fadeSpeed) {

					var prevli = $(items[currentIndex]);

					currentIndex += 1;

					if (currentIndex > items.length - 1) {

						currentIndex = 0;

					}

					var nextli = $(items[currentIndex]);	

					prevli.fadeOut(fadeSpeed);									

					nextli.fadeIn(fadeSpeed);

				}

				

				function showPreviousItem(fadeSpeed) {

					var prevli = $(items[currentIndex]);

					currentIndex -= 1;

					if (currentIndex < 0) {

						currentIndex = items.length - 1;

					}

					var nextli = $(items[currentIndex]);	

					prevli.fadeOut(fadeSpeed);									

					nextli.fadeIn(fadeSpeed);

				}

			});

		}

	});



})(jQuery);