/*
 * 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 = $('<ul class="nivo-controlNav jcarousel-skin-tango"></ul>');
      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('<li><a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('rel') + '" alt="" /></a></li>');
          } else {
            nivoControl.append('<li><a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) +'" alt="" /></a></li>');
          }
        } else {
          nivoControl.append('<li><a class="nivo-control" rel="'+ i +'">'+ (i + 1) +'</a></li>');
        }
                
      }
      //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: true,
    controlNavThumbsFromRel: false,
    controlNavThumbsSearch: '.jpg',
    controlNavThumbsReplace: '_thumb.jpg',
    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);