(function($) {

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

        var vars = {
            currentSlide: 0,
            currentImage: '',
            totalSlides: 0,
            randAnim: '',
            running: false,
            paused: false,
            stop: false
        };
    
        var slider = $(element);
        slider.data('nivo:vars', vars);
        slider.css('position','relative');
        slider.addClass('nivoSlider');
        
        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');
            }

            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(settings.startSlide > 0){
            if(settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1;
            vars.currentSlide = settings.startSlide;
        }
        
        if($(kids[vars.currentSlide]).is('img')){
            vars.currentImage = $(kids[vars.currentSlide]);
        } else {
            vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
        }
        
        if($(kids[vars.currentSlide]).is('a')){
            $(kids[vars.currentSlide]).css('display','block');
        }
        
        slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');

        var timer = 0;
        if(!settings.manualAdvance && kids.length > 1){
            timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
        }

        if(settings.directionNav){
            slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">'+ settings.prevText +'</a><a class="nivo-nextNav">'+ settings.nextText +'</a></div>');
			    
            
            $('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');
            });
        }
        
        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>');
                }
                
            }

            $('.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');
            });
					
        }
        
        if(settings.keyboardNav){
            $(window).keypress(function(event){

                if(event.keyCode == '37'){
                    if(vars.running) return false;
                    clearInterval(timer);
                    timer = '';
                    vars.currentSlide-=2;
                    nivoRun(slider, kids, settings, 'prev');
                }

                if(event.keyCode == '39'){
                    if(vars.running) return false;
                    clearInterval(timer);
                    timer = '';
                    nivoRun(slider, kids, settings, 'next');
                }
            });
        }
        
        if(settings.pauseOnHover){
            slider.hover(function(){
                vars.paused = true;
                clearInterval(timer);
                timer = '';
            }, function(){
                vars.paused = false;

                if(timer == '' && !settings.manualAdvance){
                    timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
                }
            });
        }
        

        slider.bind('nivo:animFinished', function(){ 
            vars.running = false; 

            $(kids).each(function(){
                if($(this).is('a')){
                    $(this).css('display','none');
                }
            });

            if($(kids[vars.currentSlide]).is('a')){
                $(kids[vars.currentSlide]).css('display','block');
            }

            if(timer == '' && !vars.paused && !settings.manualAdvance){
                timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
            }

            settings.afterChange.call(this);
        });
        
		
		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'
							})
						);
					}
				}
			}
		}

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

			var vars = slider.data('nivo:vars');
            
            if(vars && (vars.currentSlide == vars.totalSlides - 1)){ 
				settings.lastSlide.call(this);
			}
            
			if((!vars || vars.stop) && !nudge) return false;
			
			settings.beforeChange.call(this);
					
			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++;
			if(vars.currentSlide == vars.totalSlides){ 
				vars.currentSlide = 0;
				settings.slideshowEnd.call(this);
			}
			if(vars.currentSlide < 0) vars.currentSlide = (vars.totalSlides - 1);
			if($(kids[vars.currentSlide]).is('img')){
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}
			
			if(settings.controlNav){
				$('.nivo-controlNav a', slider).removeClass('active');
				$('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
			}
			
			$('.nivo-box', slider).remove();
			
			if(settings.effect == 'random'){
				var anims = new Array('boxRandom','boxRain','boxRainReverse','boxRainGrow','boxRainGrowReverse');
				vars.randAnim = anims[Math.floor(Math.random()*(anims.length + 1))];
				if(vars.randAnim == undefined) vars.randAnim = 'boxRainReverse';
			}
            
            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 = 'boxRainReverse';
            }
		
			vars.running = true;
			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;
				
				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();
					}
				});
				
				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){

							(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;
				}
			}
		}
		
		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;
		}
        
        var trace = function(msg){
            if (this.console && typeof console.log != "undefined")
                console.log(msg);
        }
        
        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');
            }
        }
        
        settings.afterLoad.call(this);		
		return this;
    };
        
    $.fn.nivoSlider = function(options) {
    
        return this.each(function(key, value){
            var element = $(this);
            if (element.data('nivoslider')) return element.data('nivoslider');
            var nivoslider = new NivoSlider(this, options);
            element.data('nivoslider', nivoslider);
        });

	};
	
	$.fn.nivoSlider.defaults = {
		effect: 'random',
		slices: 5,
		boxCols: 4,
		boxRows: 2,
		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,
		prevText: '',
		nextText: '',
		beforeChange: function(){},
		afterChange: function(){},
		slideshowEnd: function(){},
        lastSlide: function(){},
        afterLoad: function(){}
	};
	
	$.fn._reverse = [].reverse;
	
})(jQuery);