/**

 *	jquery.slideShow (1.0.6)

 * 	by Marcel Eichner (www.marceleichner.de)

 * 	<love@ephigenia.de>

 *

 *	This simple slideshow plugin will provide your effect gallery with

 * 	some simple features:

 *

 *	- auto slideshow with repeat and a lot of options

 *	- callback for slide changing (gotoSlide) and slide Clicks (onSlideClick)

 *	- different option variables to configure

 *	- change of slide through clicking numbers, next, prev etc and mouse

 *	  movement over the slides

 *	- text over images possible

 *	- random start slide via { start: 'rnd' }

 *	- start/stop slideshow and read playing status

 *	

 *	learn more about this plugin and other projects at:

 *	http://code.marceleichner.de/project/jquery.slideShow/

 *

 *	Copyright (c) 2009 Marcel Eichner (www.marceleichner.de)

 *	Licensed under the MIT license:

 *	http://www.opensource.org/licenses/mit-license.php

 *

 *	NOTE: This script requires jQuery to work.  Download jQuery at www.jquery.com

 */

(function($){

	

	$.fn.slideShow = function(options) {

		

		// multiple elements

		if (this.length > 1) {

			this.each(function() { $(this).slideShow(options)});

			return this;

		}



		// private vars

		this.defaults = {

			start: 			0,		// start index, set to 'random' or 'rnd' to random start

			interval: 		3,		// interval, autoplay, set to false for no auto-play, in seconds

			repeat: 		true,	// repeat at the end

			transition: {

				mode: 'fade',

				speed: 1000

			},

			slideSize: 		'auto',	// size for slides (used for mouseover and stuff)

			hoverNavigation:false,	// enable mouse to change images 

			slideClick: 	false,	// insert callback method for slide clicks

			gotoSlide: 		false	// slide change callback

		};

		this.options = $.extend({}, this.defaults, options);



		// internal vars

		this.numSlides = this.find('.slide').length;

		if (this.options.start == 'random' || this.options.start == 'rnd') {

			this.current = Math.floor(Math.random() * this.numSlides) + 1;

		} else {

			this.current = this.options.start;

		}

		if (this.current >= this.numSlides) {

			this.current = this.numSlides - 1;

		}

		this.last = false;

		this.elm = $(this);

		this.interval = false;

		this.mouse = {

			x: 0,		// store mouse x relative position on element

			y: 0,		// store mouse y relative position on element

			over: false	// store mouse over boolena value

		};

		

		// init slideshow

		this.init = function() {

			

			// set slide container to correct width and height

			if (this.find('.slides').length) {

				// auto-detect slide size

				if (this.options.slideSize == 'auto') {

					this.options.slideSize = {

						width: this.find('.slide:first img').width(),

						height: this.find('.slide:first img').height()

					};

				}				

				// don't set size of slides and slide container if not needed

				if (this.options.slideSize != 'none' && this.options.slideSize != false) {

					this.find('.slides, .slide').css({

						height: this.options.slideSize.height + 'px',

						width: this.options.slideSize.width + 'px',

						overflow: 'hidden'

					});

				}

			}

			

			// set slides to be positioned absolute

			this.find('.slide').css('position', 'absolute');

			// hide slides if not hidden allready

			this.find('.slide:not(:eq(' + this.current + '))').hide();

			

			// navigation shortcuts

			this.find('.first, .next, .prev, .last, .navigation, .slide, .page, .slides').data('slideShow', this);

			this.find('.first').click(this.first);

			this.find('.next').click(this.next);

			this.find('.prev').click(this.previous);

			this.find('.last').click(this.last);

			

			// init pagínation buttons if available

			this.find('.navigation .page:eq(' + this.current + ')').addClass('selected');

			this.find('.page').click(function() {

				if (!(slideShow = $(this).data('slideShow'))) {

					var slideShow = this;

				}

				// determine position in navigation

				var index = $(this).html();

				if (!(index = parseInt($(this).html()-1))) {

					var index = $(this).parents('.navigation').find('.page').index($(this));

				}

				slideShow.gotoSlide(index);

			});

			

			// init mouse move handler

			this.find('.slide').mousemove(function(event) {

				var slideShow = $(this).data('slideShow');

				// calculate mouse relative position and store it

				slideShow.mouse.x = Math.abs(event.clientX - $(this).position().left);

				slideShow.mouse.y = Math.abs(event.clientY - $(this).position().top);

				if (slideShow.mouse.x > slideShow.options.slideSize.width) slideShow.mouse.x = slideShow.options.slideSize.width;

				if (slideShow.mouse.y > slideShow.options.slideSize.height) slideShow.mouse.y = slideShow.options.slideSize.height;

				// use mouse vor navigation, calculate new page from mouse position

				if (slideShow.options.hoverNavigation) {

					var index = Math.round((slideShow.numSlides - 1) * slideShow.mouse.x / slideShow.options.slideSize.width);

					slideShow.gotoSlide(index, true);

				}

			});

			

			// mouse enter handler

			this.find('.slide').mouseenter(function() {

				var slideShow = $(this).data('slideShow');

				slideShow.mouse.over = true;

				slideShow.stopAuto();

			});

			

			// mouse leave handler

			this.find('.slide').mouseleave(function() {

				var slideShow = $(this).data('slideShow');

				slideShow.mouse.over = false;

				slideShow.auto();

			});

			

			// on click handler

			if (typeof(this.options.slideClick) == 'function') {

				this.find('.slide').click(function() {

					var slideShow = $(this).data('slideShow');

					slideShow.options.slideClick(slideShow);

				});

			}



			g = this.current;

			this.current = -1;

			this.gotoSlide(g);

			// start interval for auto animation

			if (this.options.interval > 0) {

				this.auto();

			}

			return this;

		};

		

		// public methods

		this.auto = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			if (!slideShow.interval && slideShow.options.interval > 0.001) {

				slideShow.interval = window.setInterval(function() {

					slideShow.next();

				}, slideShow.options.interval * 1000);

			}

			return this;

		}

		// check if slideshow is running

		this.isPlaying = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			return slideShow.interval;

		}

		// stop/play slideshow automatic 

		this.togglePlayback = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			if (slideShow.isPlaying()) {

				slideShow.stopAuto();

			} else {

				slideShow.auto();

			}

		},

		// stop automatic slideshow

		this.stopAuto = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			if (slideShow.interval) {

				window.clearInterval(slideShow.interval);

				slideShow.interval = false;

			}

			return this;

		}

		// goto first slide

		this.first = function(elm) {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			return slideShow.gotoSlide(0);

		};

		// goto last slide

		this.next = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			return slideShow.gotoSlide(slideShow.current + 1);

		};

		this.previous = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			return slideShow.gotoSlide(slideShow.current - 1);

		};

		this.last = function() {

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			return slideShow.gotoSlide(slideShow.numSlides);

		};

		this.gotoSlide = function(index, noanimation) {

			if (index < 0) {

				index = this.numSlides - 1;

			}

			if (index >= this.numSlides) {

				index = 0;

			}

			if (index === this.current) return this;

			// get slide elements

			var oldSlide = this.find('.slide:eq(' + this.current +')');

			var newSlide = this.find('.slide:eq(' + index +')');

			// callbacks for animation finished

			oldFinished = function () {

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

				if (!(slideShow = $(this).data('slideShow'))) {

					var slideShow = this;

				}

				slideShow.elm.find('.navigation .page:eq(' + slideShow.current + ')').addClass('selected');

				if (!slideShow.mouse.over) {

					slideShow.auto();

				}

			}

			newFinished = function() {

				if (!(slideShow = $(this).data('slideShow'))) {

					var slideShow = this;

				}

				if (slideShow.current >= 0) {

					slideShow.elm.find('.navigation .page:not(:eq(' + slideShow.current + '))').removeClass('selected');

				}

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

			}

			// get slideshow

			if (!(slideShow = $(this).data('slideShow'))) {

				var slideShow = this;

			}

			slideShow.stopAuto();

			// call callback

			if (typeof(this.options.gotoSlide) == 'function') {

				this.options.gotoSlide(slideShow, index);

			}

			// start transition

			if (noanimation) {

				oldSlide.hide(1, oldFinished);

				newSlide.show(1, newFinished);

			} else {

				if (typeof(this.options.transition.mode) == 'function') {

					this.call(this.options.transition.mode, newSlide, oldSlide);

				} else {

					switch(this.options.transition.mode) {

						default:

						case 'fade':

							oldSlide.fadeOut(this.options.transition.speed, oldFinished);

							newSlide.fadeIn(this.options.transition.speed, newFinished);

							break;

					}

				}

			}

			// alter height of slides to new slide height

			this.find('.slides').animate({

				height: newSlide.height()

			});

			

			this.last = this.current;

			this.current = index;

			return this;

		};

		

		return this.init();

	}

	

})(jQuery);