/*
 * jQuery Nivo Slider v2.6
 * 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.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);
			if(vars.currentImage.attr('title') != '' && vars.currentImage.attr('title') != undefined){
				var title = vars.currentImage.attr('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 {

					// MODIFIED

					if ( i === 0 ) {
						var txt = 'Spin Analytical Innovation In Design';
					} else if ( i === 1 ) {
						var txt = 'Membrane Confined Electrophoresis';	
					} else if ( i === 2 ) {
						var txt = 'New and Improved AUC Centerpieces';	
					}

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