/*
 * jQuery Nivo Slider v2.5.2
 * 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);
      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 {
                    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);
        });
        
        // 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,vars.currentImage);
          
      //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);