/*

 * jQuery Nivo Slider v2.3

 * http://nivo.dev7studios.com

 *

 * Copyright 2010, Gilbert Pellegrom

 * Free to use and abuse under the MIT license.

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

 * 

 * May 2010 - Pick random effect from specified set of effects by toronegro

 * May 2010 - controlNavThumbsFromRel option added by nerd-sh

 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski

 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)

 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)

 */

(function($) {

	var NivoSlider = function(element, options) {

		// Defaults are below

		var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

		// Useful variables. Play carefully.

		var vars = {

			currentSlide : 0,

			currentImage : '',

			totalSlides : 0,

			randAnim : '',

			running : false,

			paused : false,

			stop : false

		};

		// Get this slider

		var slider = $(element);

		slider.data('nivo:vars', vars);

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

		slider.addClass('nivoSlider');

		// Find our slider children

		var kids = slider.children();

		kids.each(function() {

			var child = $(this);

			var link = '';

			if (!child.is('img')) {

				if (child.is('a')) {

					child.addClass('nivo-imageLink');

					link = child;

				}

				child = child.find('img:first');

			}

			// Get img width & height

			var childWidth = child.width();

			if (childWidth == 0)
				childWidth = child.attr('width');

			var childHeight = child.height();

			if (childHeight == 0)
				childHeight = child.attr('height');

			// Resize the slider

			if (childWidth > slider.width()) {

				slider.width(childWidth);

			}

			if (childHeight > slider.height()) {

				slider.height(childHeight);

			}

			if (link != '') {

				link.css('display', 'none');

			}

			child.css('display', 'none');

			vars.totalSlides++;

		});

		// Set startSlide

		if (settings.startSlide > 0) {

			if (settings.startSlide >= vars.totalSlides)
				settings.startSlide = vars.totalSlides - 1;

			vars.currentSlide = settings.startSlide;

		}

		// Get initial image

		if ($(kids[vars.currentSlide]).is('img')) {

			vars.currentImage = $(kids[vars.currentSlide]);

		} else {

			vars.currentImage = $(kids[vars.currentSlide]).find('img:first');

		}

		// Show initial link

		if ($(kids[vars.currentSlide]).is('a')) {

			$(kids[vars.currentSlide]).css('display', 'block');

		}

		// Set first background

		slider.css('background', 'url(' + vars.currentImage.attr('src')
				+ ') no-repeat');

		// Add initial slices

		for ( var i = 0; i < settings.slices; i++) {

			var sliceWidth = Math.round(slider.width() / settings.slices);

			if (i == settings.slices - 1) {

				slider.append(

				$('<div class="nivo-slice"></div>').css({
					left : (sliceWidth * i) + 'px',
					width : (slider.width() - (sliceWidth * i)) + 'px'
				})

				);

			} else {

				slider.append(

				$('<div class="nivo-slice"></div>').css({
					left : (sliceWidth * i) + 'px',
					width : sliceWidth + 'px'
				})

				);

			}

		}

		// Create caption

		slider.append(

		$('<div class="nivo-caption"><p></p></div>').css({
			display : 'none',
			opacity : settings.captionOpacity
		})

		);

		// Process initial caption

		if (vars.currentImage.attr('title') != '') {

			var title = vars.currentImage.attr('title');

			if (title.substr(0, 1) == '#')
				title = $(title).html();

			$('.nivo-caption p', slider).html(title);

			$('.nivo-caption', slider).fadeIn(settings.animSpeed);

		}

		// In the words of Super Mario "let's a go!"

		var timer = 0;

		if (!settings.manualAdvance && kids.length > 1) {

			timer = setInterval(function() {
				nivoRun(slider, kids, settings, false);
			}, settings.pauseTime);

		}

		// Add Direction nav

		if (settings.directionNav) {

			slider
					.append('<div class="nivo-directionNav"><a class="nivo-prevNav"></a><a class="nivo-nextNav"></a></div>');

			// Hide Direction nav

			if (settings.directionNavHide) {

				$('.nivo-directionNav', slider).hide();

				slider.hover(function() {

					$('.nivo-directionNav', slider).show();

				}, function() {

					$('.nivo-directionNav', slider).hide();

				});

			}

			$('a.nivo-prevNav', slider).live('click', function() {

				if (vars.running)
					return false;

				clearInterval(timer);

				timer = '';

				vars.currentSlide -= 2;

				nivoRun(slider, kids, settings, 'prev');

			});

			$('a.nivo-nextNav', slider).live('click', function() {

				if (vars.running)
					return false;

				clearInterval(timer);

				timer = '';

				nivoRun(slider, kids, settings, 'next');

			});

		}

		// Add Control nav

		if (settings.controlNav) {

			var nivoControl = $('<div class="nivo-controlNav"></div>');

			slider.append(nivoControl);

			for ( var i = 0; i < kids.length; i++) {

				if (settings.controlNavThumbs) {

					var child = kids.eq(i);

					if (!child.is('img')) {

						child = child.find('img:first');

					}

					if (settings.controlNavThumbsFromRel) {

						nivoControl.append('<a class="nivo-control" rel="' + i
								+ '"><img src="' + child.attr('rel')
								+ '" alt="" /></a>');

					} else {

						nivoControl.append('<a class="nivo-control" rel="'
								+ i
								+ '"><img src="'
								+ child.attr('src').replace(
										settings.controlNavThumbsSearch,
										settings.controlNavThumbsReplace)
								+ '" alt="" /></a>');

					}

				} else {

					nivoControl.append('<a class="nivo-control" rel="' + i
							+ '">' + (i + 1) + '</a>');

				}

			}

			// Set initial active link

			$('.nivo-controlNav a:eq(' + vars.currentSlide + ')', slider)
					.addClass('active');

			$('.nivo-controlNav a', slider).live(
					'click',
					function() {

						if (vars.running)
							return false;

						if ($(this).hasClass('active'))
							return false;

						clearInterval(timer);

						timer = '';

						slider
								.css('background', 'url('
										+ vars.currentImage.attr('src')
										+ ') no-repeat');

						vars.currentSlide = $(this).attr('rel') - 1;

						nivoRun(slider, kids, settings, 'control');

					});

		}

		// Keyboard Navigation

		if (settings.keyboardNav) {

			$(window).keypress(function(event) {

				// Left

				if (event.keyCode == '37') {

					if (vars.running)
						return false;

					clearInterval(timer);

					timer = '';

					vars.currentSlide -= 2;

					nivoRun(slider, kids, settings, 'prev');

				}

				// Right

				if (event.keyCode == '39') {

					if (vars.running)
						return false;

					clearInterval(timer);

					timer = '';

					nivoRun(slider, kids, settings, 'next');

				}

			});

		}

		// For pauseOnHover setting

		if (settings.pauseOnHover) {

			slider.hover(function() {

				vars.paused = true;

				clearInterval(timer);

				timer = '';

			}, function() {

				vars.paused = false;

				// Restart the timer

				if (timer == '' && !settings.manualAdvance) {

					timer = setInterval(function() {
						nivoRun(slider, kids, settings, false);
					}, settings.pauseTime);

				}

			});

		}

		// Event when Animation finishes

		slider.bind('nivo:animFinished', function() {

			vars.running = false;

			// Hide child links

			$(kids).each(function() {

				if ($(this).is('a')) {

					$(this).css('display', 'none');

				}

			});

			// Show current link

			if ($(kids[vars.currentSlide]).is('a')) {

				$(kids[vars.currentSlide]).css('display', 'block');

			}

			// Restart the timer

			if (timer == '' && !vars.paused && !settings.manualAdvance) {

				timer = setInterval(function() {
					nivoRun(slider, kids, settings, false);
				}, settings.pauseTime);

			}

			// Trigger the afterChange callback

			settings.afterChange.call(this);

		});

		// Private run method

		var nivoRun = function(slider, kids, settings, nudge) {

			// Get our vars

			var vars = slider.data('nivo:vars');

			// Trigger the lastSlide callback

			if (vars && (vars.currentSlide == vars.totalSlides - 1)) {

				settings.lastSlide.call(this);

			}

			// Stop

			if ((!vars || vars.stop) && !nudge)
				return false;

			// Trigger the beforeChange callback

			settings.beforeChange.call(this);

			// Set current background before change

			if (!nudge) {

				slider.css('background', 'url(' + vars.currentImage.attr('src')
						+ ') no-repeat');

			} else {

				if (nudge == 'prev') {

					slider.css('background', 'url('
							+ vars.currentImage.attr('src') + ') no-repeat');

				}

				if (nudge == 'next') {

					slider.css('background', 'url('
							+ vars.currentImage.attr('src') + ') no-repeat');

				}

			}

			vars.currentSlide++;

			// Trigger the slideshowEnd callback

			if (vars.currentSlide == vars.totalSlides) {

				vars.currentSlide = 0;

				settings.slideshowEnd.call(this);

			}

			if (vars.currentSlide < 0)
				vars.currentSlide = (vars.totalSlides - 1);

			// Set vars.currentImage

			if ($(kids[vars.currentSlide]).is('img')) {

				vars.currentImage = $(kids[vars.currentSlide]);

			} else {

				vars.currentImage = $(kids[vars.currentSlide])
						.find('img:first');

			}

			// Set acitve links

			if (settings.controlNav) {

				$('.nivo-controlNav a', slider).removeClass('active');

				$('.nivo-controlNav a:eq(' + vars.currentSlide + ')', slider)
						.addClass('active');

			}

			// Process caption

			if (vars.currentImage.attr('title') != '') {

				var title = vars.currentImage.attr('title');

				if (title.substr(0, 1) == '#')
					title = $(title).html();

				if ($('.nivo-caption', slider).css('display') == 'block') {

					$('.nivo-caption p', slider).fadeOut(settings.animSpeed,
							function() {

								$(this).html(title);

								$(this).fadeIn(settings.animSpeed);

							});

				} else {

					$('.nivo-caption p', slider).html(title);

				}

				$('.nivo-caption', slider).fadeIn(settings.animSpeed);

			} else {

				$('.nivo-caption', slider).fadeOut(settings.animSpeed);

			}

			// Set new slice backgrounds

			var i = 0;

			$('.nivo-slice', slider)
					.each(
							function() {

								var sliceWidth = Math.round(slider.width()
										/ settings.slices);

								$(this)
										.css(
												{
													height : '0px',
													opacity : '0',

													background : 'url('
															+ vars.currentImage
																	.attr('src')
															+ ') no-repeat -'
															+ ((sliceWidth + (i * sliceWidth)) - sliceWidth)
															+ 'px 0%'
												});

								i++;

							});

			if (settings.effect == 'random') {

				var anims = new Array("sliceDownRight", "sliceDownLeft",
						"sliceUpRight", "sliceUpLeft", "sliceUpDown",
						"sliceUpDownLeft", "fold", "fade");

				vars.randAnim = anims[Math.floor(Math.random()
						* (anims.length + 1))];

				if (vars.randAnim == undefined)
					vars.randAnim = 'fade';

			}

			// Run random effect from specified set (eg: effect:'fold,fade')

			if (settings.effect.indexOf(',') != -1) {

				var anims = settings.effect.split(',');

				vars.randAnim = $.trim(anims[Math.floor(Math.random()
						* anims.length)]);

			}

			// Run effects

			vars.running = true;

			if (settings.effect == 'sliceDown'
					|| settings.effect == 'sliceDownRight'
					|| vars.randAnim == 'sliceDownRight' ||

					settings.effect == 'sliceDownLeft'
					|| vars.randAnim == 'sliceDownLeft') {

				var timeBuff = 0;

				var i = 0;

				var slices = $('.nivo-slice', slider);

				if (settings.effect == 'sliceDownLeft'
						|| vars.randAnim == 'sliceDownLeft')
					slices = $('.nivo-slice', slider)._reverse();

				slices.each(function() {

					var slice = $(this);

					slice.css('top', '0px');

					if (i == settings.slices - 1) {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});

						}, (100 + timeBuff));

					} else {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);

						}, (100 + timeBuff));

					}

					timeBuff += 50;

					i++;

				});

			}

			else if (settings.effect == 'sliceUp'
					|| settings.effect == 'sliceUpRight'
					|| vars.randAnim == 'sliceUpRight' ||

					settings.effect == 'sliceUpLeft'
					|| vars.randAnim == 'sliceUpLeft') {

				var timeBuff = 0;

				var i = 0;

				var slices = $('.nivo-slice', slider);

				if (settings.effect == 'sliceUpLeft'
						|| vars.randAnim == 'sliceUpLeft')
					slices = $('.nivo-slice', slider)._reverse();

				slices.each(function() {

					var slice = $(this);

					slice.css('bottom', '0px');

					if (i == settings.slices - 1) {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});

						}, (100 + timeBuff));

					} else {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);

						}, (100 + timeBuff));

					}

					timeBuff += 50;

					i++;

				});

			}

			else if (settings.effect == 'sliceUpDown'
					|| settings.effect == 'sliceUpDownRight'
					|| vars.randAnim == 'sliceUpDown' ||

					settings.effect == 'sliceUpDownLeft'
					|| vars.randAnim == 'sliceUpDownLeft') {

				var timeBuff = 0;

				var i = 0;

				var v = 0;

				var slices = $('.nivo-slice', slider);

				if (settings.effect == 'sliceUpDownLeft'
						|| vars.randAnim == 'sliceUpDownLeft')
					slices = $('.nivo-slice', slider)._reverse();

				slices.each(function() {

					var slice = $(this);

					if (i == 0) {

						slice.css('top', '0px');

						i++;

					} else {

						slice.css('bottom', '0px');

						i = 0;

					}

					if (v == settings.slices - 1) {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});

						}, (100 + timeBuff));

					} else {

						setTimeout(function() {

							slice.animate({
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);

						}, (100 + timeBuff));

					}

					timeBuff += 50;

					v++;

				});

			}

			else if (settings.effect == 'fold' || vars.randAnim == 'fold') {

				var timeBuff = 0;

				var i = 0;

				$('.nivo-slice', slider).each(function() {

					var slice = $(this);

					var origWidth = slice.width();

					slice.css({
						top : '0px',
						height : '100%',
						width : '0px'
					});

					if (i == settings.slices - 1) {

						setTimeout(function() {

							slice.animate({
								width : origWidth,
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});

						}, (100 + timeBuff));

					} else {

						setTimeout(function() {

							slice.animate({
								width : origWidth,
								opacity : '1.0'
							}, settings.animSpeed);

						}, (100 + timeBuff));

					}

					timeBuff += 50;

					i++;

				});

			}

			else if (settings.effect == 'fade' || vars.randAnim == 'fade') {

				var i = 0;

				$('.nivo-slice', slider).each(function() {

					$(this).css('height', '100%');

					if (i == settings.slices - 1) {

						$(this).animate({
							opacity : '1.0'
						}, (settings.animSpeed * 2), '', function() {
							slider.trigger('nivo:animFinished');
						});

					} else {

						$(this).animate({
							opacity : '1.0'
						}, (settings.animSpeed * 2));

					}

					i++;

				});

			}

		}

		// For debugging

		var trace = function(msg) {

			if (this.console && typeof console.log != "undefined")

				console.log(msg);

		}

		// Start / Stop

		this.stop = function() {

			if (!$(element).data('nivo:vars').stop) {

				$(element).data('nivo:vars').stop = true;

				trace('Stop Slider');

			}

		}

		this.start = function() {

			if ($(element).data('nivo:vars').stop) {

				$(element).data('nivo:vars').stop = false;

				trace('Start Slider');

			}

		}

		// Trigger the afterLoad callback

		settings.afterLoad.call(this);

	};

	$.fn.nivoSlider = function(options) {

		return this.each(function() {

			var element = $(this);

			// Return early if this element already has a plugin instance

			if (element.data('nivoslider'))
				return;

			// Pass options to plugin constructor

			var nivoslider = new NivoSlider(this, options);

			// Store plugin object in this element's data

			element.data('nivoslider', nivoslider);

		});

	};

	// Default settings

	$.fn.nivoSlider.defaults = {

		effect : 'random',

		slices : 15,

		animSpeed : 500,

		pauseTime : 3000,

		startSlide : 0,

		directionNav : true,

		directionNavHide : true,

		controlNav : true,

		controlNavThumbs : false,

		controlNavThumbsFromRel : false,

		controlNavThumbsSearch : '.jpg',

		controlNavThumbsReplace : '_thumb.jpg',

		keyboardNav : true,

		pauseOnHover : true,

		manualAdvance : false,

		captionOpacity : 0.8,

		beforeChange : function() {
		},

		afterChange : function() {
		},

		slideshowEnd : function() {
		},

		lastSlide : function() {
		},

		afterLoad : function() {
		}

	};

	$.fn._reverse = [].reverse;

})(jQuery);