/*
* 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.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);
              
              //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: 'fade',
    slices: 15,
    boxCols: 8,
    boxRows: 4,
    animSpeed: 500,
    pauseTime: 5000,
    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);