/*
 * jQuery Nivo Slider v2.7
 * 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,
	    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++;
	});
        
	//If randomStart
	if(settings.randomStart){
	    settings.startSlide = Math.floor(Math.random() * 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').stop().fadeOut(settings.animSpeed, function(){
			$(this).html(title);
			$(this).stop().fadeIn(settings.animSpeed);
		    });
		} else {
		    nivoCaption.find('p').html(title);
		}					
		nivoCaption.stop().fadeIn(settings.animSpeed);
	    } else {
		nivoCaption.stop().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(){
		clearInterval(timer);
		timer = '';
		vars.currentSlide -= 2;
		nivoRun(slider, kids, settings, 'prev');
	    });
            
	    $('a.nivo-nextNav', slider).live('click', function(){
		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');
            
	    $('.nivo-controlNav a', slider).live('click', function(){
		if($(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');
	    }
	    
	    
	    $('.nivo-imageLink').css('display','none');
	    
	    if($(kids[vars.currentSlide]).is('a')){
		$(kids[vars.currentSlide]).css('display','block');
	    }
			
	    //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();
			
	    var currentEffect = settings.effect;
	    //Generate random effect
	    if(settings.effect == 'random'){
		var anims = new Array('sliceDownRight','sliceDownLeft','sliceUpRight','sliceUpLeft','sliceUpDown','sliceUpDownLeft','fold','fade',
		    'boxRandom','boxRain','boxRainReverse','boxRainGrow','boxRainGrowReverse');
		currentEffect = anims[Math.floor(Math.random()*(anims.length + 1))];
		if(currentEffect == undefined) currentEffect = 'fade';
	    }
            
	    //Run random effect from specified set (eg: effect:'fold,fade')
	    if(settings.effect.indexOf(',') != -1){
		var anims = settings.effect.split(',');
		currentEffect = anims[Math.floor(Math.random()*(anims.length))];
		if(currentEffect == undefined) currentEffect = 'fade';
	    }
            
	    //Custom transition as defined by "data-transition" attribute
	    if(vars.currentImage.attr('data-transition')){
		currentEffect = vars.currentImage.attr('data-transition');
	    }
		
	    //Run effects
	    vars.running = true;
	    if(currentEffect == 'sliceDown' || currentEffect == 'sliceDownRight' || currentEffect == 'sliceDownLeft'){
		createSlices(slider, settings, vars);
		var timeBuff = 0;
		var i = 0;
		var slices = $('.nivo-slice', slider);
		if(currentEffect == '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(currentEffect == 'sliceUp' || currentEffect == 'sliceUpRight' || currentEffect == 'sliceUpLeft'){
		createSlices(slider, settings, vars);
		var timeBuff = 0;
		var i = 0;
		var slices = $('.nivo-slice', slider);
		if(currentEffect == '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(currentEffect == 'sliceUpDown' || currentEffect == 'sliceUpDownRight' || currentEffect == 'sliceUpDownLeft'){
		createSlices(slider, settings, vars);
		var timeBuff = 0;
		var i = 0;
		var v = 0;
		var slices = $('.nivo-slice', slider);
		if(currentEffect == '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(currentEffect == '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(currentEffect == 'fade'){
		createSlices(slider, settings, vars);
				
		var firstSlice = $('.nivo-slice:first', slider);
		firstSlice.css({
		    'height': '100%',
		    'width': slider.width() + 'px'
		});
    
		firstSlice.animate({
		    opacity:1
		}, (settings.animSpeed), '', function(){
		    slider.trigger('nivo:animFinished');
		});
	    }          
	    else if(currentEffect == '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(currentEffect == '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(currentEffect == '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(currentEffect == 'boxRain' || currentEffect == 'boxRainReverse' || currentEffect == 'boxRainGrow' || currentEffect == '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(currentEffect == 'boxRainReverse' || currentEffect == '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(currentEffect == 'boxRainGrow' || currentEffect == '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',
	randomStart: false,
	beforeChange: function(){},
	afterChange: function(){},
	slideshowEnd: function(){},
	lastSlide: function(){},
	afterLoad: function(){}
    };
	
    $.fn._reverse = [].reverse;
	
})(jQuery);