/*
* jQuery Nivo Slider v2.5.1
* http://nivo.dev7studios.com
*
* Copyright 2011, Gilbert Pellegrom
* Free to use and abuse under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
* 
* March 2010
*/

(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');

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

		// Process caption function
		var processCaption = function(settings) {
			var nivoCaption = $('.nivo-caption', slider),
				title = vars.currentImage.attr('title');

			if (typeof title == 'string' && title != '') {
				if (title.substr(0, 1) == '#') title = $(title).html();

				if (nivoCaption.css('display') == 'block') {
					nivoCaption.find('p').fadeOut(settings.animSpeed, function() {
						$(this).html(title);
						$(this).fadeIn(settings.animSpeed);
					});
				} else {
					nivoCaption.find('p').html(title);
				}
				nivoCaption.fadeIn(settings.animSpeed);
			} else {
				nivoCaption.fadeOut(settings.animSpeed);
			}
		}

		//Process initial  caption
		processCaption(settings);

		//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">' + settings.prevText + '</a><a class="nivo-nextNav">' + settings.nextText + '</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);

			slider.css('background-image', 'none');
		});

		// Add slices for slice animations
		var createSlices = function(slider, settings, vars) {
			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',
							height: '0px',
							opacity: '0',
							background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
						})
					);
				} else {
					slider.append(
						$('<div class="nivo-slice"></div>').css({
							left: (sliceWidth * i) + 'px', width: sliceWidth + 'px',
							height: '0px',
							opacity: '0',
							background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
						})
					);
				}
			}
		}

		// Add boxes for box animations
		var createBoxes = function(slider, settings, vars) {
			var boxWidth = Math.round(slider.width() / settings.boxCols);
			var boxHeight = Math.round(slider.height() / settings.boxRows);

			for (var rows = 0; rows < settings.boxRows; rows++) {
				for (var cols = 0; cols < settings.boxCols; cols++) {
					if (cols == settings.boxCols - 1) {
						slider.append(
							$('<div class="nivo-box"></div>').css({
								opacity: 0,
								left: (boxWidth * cols) + 'px',
								top: (boxHeight * rows) + 'px',
								width: (slider.width() - (boxWidth * cols)) + 'px',
								height: boxHeight + 'px',
								background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((boxWidth + (cols * boxWidth)) - boxWidth) + 'px -' + ((boxHeight + (rows * boxHeight)) - boxHeight) + 'px'
							})
						);
					} else {
						slider.append(
							$('<div class="nivo-box"></div>').css({
								opacity: 0,
								left: (boxWidth * cols) + 'px',
								top: (boxHeight * rows) + 'px',
								width: boxWidth + 'px',
								height: boxHeight + 'px',
								background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((boxWidth + (cols * boxWidth)) - boxWidth) + 'px -' + ((boxHeight + (rows * boxHeight)) - boxHeight) + 'px'
							})
						);
					}
				}
			}
		}

		// 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 active links
			if (settings.controlNav) {
				$('.nivo-controlNav a', slider).removeClass('active');
				$('.nivo-controlNav a:eq(' + vars.currentSlide + ')', slider).addClass('active');
			}

			//Process caption
			processCaption(settings);

			// Remove any slices from last transition
			$('.nivo-slice', slider).remove();

			// Remove any boxes from last transition
			$('.nivo-box', slider).remove();

			if (settings.effect == 'random') {
				var anims = new Array('sliceDownRight', 'sliceDownLeft', 'sliceUpRight', 'sliceUpLeft', 'sliceUpDown', 'sliceUpDownLeft', 'fold', 'fade',
                'boxRandom', 'boxRain', 'boxRainReverse', 'boxRainGrow', 'boxRainGrowReverse');
				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 = anims[Math.floor(Math.random() * (anims.length))];
				if (vars.randAnim == undefined) vars.randAnim = 'fade';
			}

			//Run effects
			vars.running = true;
			if (settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
				settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') {
				createSlices(slider, settings, vars);
				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') {
				createSlices(slider, settings, vars);
				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') {
				createSlices(slider, settings, vars);
				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') {
				createSlices(slider, settings, vars);
				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') {
				createSlices(slider, settings, vars);

				var firstSlice = $('.nivo-slice:first', slider);
				firstSlice.css({
					'height': '100%',
					'width': slider.width() + 'px'
				});

				firstSlice.animate({ opacity: '1.0' }, (settings.animSpeed * 2), '', function() { slider.trigger('nivo:animFinished'); });
			}
			else if (settings.effect == 'slideInRight' || vars.randAnim == 'slideInRight') {
				createSlices(slider, settings, vars);

				var firstSlice = $('.nivo-slice:first', slider);
				firstSlice.css({
					'height': '100%',
					'width': '0px',
					'opacity': '1'
				});

				firstSlice.animate({ width: slider.width() + 'px' }, (settings.animSpeed * 2), '', function() { slider.trigger('nivo:animFinished'); });
			}
			else if (settings.effect == 'slideInLeft' || vars.randAnim == 'slideInLeft') {
				createSlices(slider, settings, vars);

				var firstSlice = $('.nivo-slice:first', slider);
				firstSlice.css({
					'height': '100%',
					'width': '0px',
					'opacity': '1',
					'left': '',
					'right': '0px'
				});

				firstSlice.animate({ width: slider.width() + 'px' }, (settings.animSpeed * 2), '', function() {
					// Reset positioning
					firstSlice.css({
						'left': '0px',
						'right': ''
					});
					slider.trigger('nivo:animFinished');
				});
			}
			else if (settings.effect == 'boxRandom' || vars.randAnim == 'boxRandom') {
				createBoxes(slider, settings, vars);

				var totalBoxes = settings.boxCols * settings.boxRows;
				var i = 0;
				var timeBuff = 0;

				var boxes = shuffle($('.nivo-box', slider));
				boxes.each(function() {
					var box = $(this);
					if (i == totalBoxes - 1) {
						setTimeout(function() {
							box.animate({ opacity: '1' }, settings.animSpeed, '', function() { slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function() {
							box.animate({ opacity: '1' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 20;
					i++;
				});
			}
			else if (settings.effect == 'boxRain' || vars.randAnim == 'boxRain' || settings.effect == 'boxRainReverse' || vars.randAnim == 'boxRainReverse' ||
                    settings.effect == 'boxRainGrow' || vars.randAnim == 'boxRainGrow' || settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
				createBoxes(slider, settings, vars);

				var totalBoxes = settings.boxCols * settings.boxRows;
				var i = 0;
				var timeBuff = 0;

				// Split boxes into 2D array
				var rowIndex = 0;
				var colIndex = 0;
				var box2Darr = new Array();
				box2Darr[rowIndex] = new Array();
				var boxes = $('.nivo-box', slider);
				if (settings.effect == 'boxRainReverse' || vars.randAnim == 'boxRainReverse' ||
                   settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
					boxes = $('.nivo-box', slider)._reverse();
				}
				boxes.each(function() {
					box2Darr[rowIndex][colIndex] = $(this);
					colIndex++;
					if (colIndex == settings.boxCols) {
						rowIndex++;
						colIndex = 0;
						box2Darr[rowIndex] = new Array();
					}
				});

				// Run animation
				for (var cols = 0; cols < (settings.boxCols * 2); cols++) {
					var prevCol = cols;
					for (var rows = 0; rows < settings.boxRows; rows++) {
						if (prevCol >= 0 && prevCol < settings.boxCols) {
							/* Due to some weird JS bug with loop vars 
							being used in setTimeout, this is wrapped
							with an anonymous function call */
							(function(row, col, time, i, totalBoxes) {
								var box = $(box2Darr[row][col]);
								var w = box.width();
								var h = box.height();
								if (settings.effect == 'boxRainGrow' || vars.randAnim == 'boxRainGrow' ||
                                   settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
									box.width(0).height(0);
								}
								if (i == totalBoxes - 1) {
									setTimeout(function() {
										box.animate({ opacity: '1', width: w, height: h }, settings.animSpeed / 1.3, '', function() { slider.trigger('nivo:animFinished'); });
									}, (100 + time));
								} else {
									setTimeout(function() {
										box.animate({ opacity: '1', width: w, height: h }, settings.animSpeed / 1.3);
									}, (100 + time));
								}
							})(rows, prevCol, timeBuff, i, totalBoxes);
							i++;
						}
						prevCol--;
					}
					timeBuff += 100;
				}
			}
		}

		// Shuffle an array
		var shuffle = function(arr) {
			for (var j, x, i = arr.length; i; j = parseInt(Math.random() * i), x = arr[--i], arr[i] = arr[j], arr[j] = x);
			return arr;
		}

		// 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);

		return this;
	};

	$.fn.nivoSlider = function(options) {

		return this.each(function(key, value) {
			var element = $(this);
			// Return early if this element already has a plugin instance
			if (element.data('nivoslider')) return element.data('nivoslider');
			// 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,
		boxCols: 8,
		boxRows: 4,
		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,
		prevText: 'Prev',
		nextText: 'Next',
		beforeChange: function() { },
		afterChange: function() { },
		slideshowEnd: function() { },
		lastSlide: function() { },
		afterLoad: function() { }
	};

	$.fn._reverse = [].reverse;

})(jQuery);