/*
 * jQuery Nivo Slider v2.0
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 */

(function($) {

      $.fn.nivoSlider = function(options) {

            //Defaults are below
            var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

            return this.each(function() {
                  //Useful variables. Play carefully.
                  var vars = {
                        currentSlide: 0,
                        currentImage: '',
                        totalSlides: 0,
                        randAnim: '',
                        running: false,
                        paused: false,
                        stop:false
                  };
            
                  //Get this slider
                  var slider = $(this);
                  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');
                  
                  //Add initial slices
                  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' })
                              );
                        } else {
                              slider.append(
                                    $('<div class="nivo-slice"></div>').css({ left:(sliceWidth*i)+'px', width:sliceWidth+'px' })
                              );
                        }
                  }
                  
                  //Create caption
                  slider.append(
                        $('<div class="nivo-caption"><p></p></div>').css({ display:'none', opacity:settings.captionOpacity })
                  );                
                  //Process initial  caption
                  if(vars.currentImage.attr('title') != ''){
                        $('.nivo-caption p', slider).html(vars.currentImage.attr('title'));                              
                        $('.nivo-caption', slider).fadeIn(settings.animSpeed);
                  }
                  
                  //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"><img src="images/left_slidearrow.png"/></a><a class="nivo-nextNav"><img src="images/right_slidearrow.png"/></a></div>');
                        
                        //$('.nivo-directionNav', slider).show();
                        
                        //Hide Direction nav
				if(settings.directionNavHide){
					$('.nivo-directionNav', slider).hide();
					$('.nivo-directionNav-img', slider).hide();
					slider.hover(function(){
						$('.nivo-directionNav', slider).show();
						$('.nivo-directionNav-img', slider).show();
					}, function(){
						$('.nivo-directionNav', slider).hide();
						$('.nivo-directionNav-img', 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="'+ '' +'"><img src="'+ child.attr('rel') + '" alt="" /></a>');
                        } else {
                            nivoControl.append('<a class="nivo-control" rel="'+ '' +'"><img src="'+ child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) +'" alt="" /></a>');
                        }
                              } else {
                                    nivoControl.append('<a class="nivo-control" rel="'+ i +'">'+ '' +'</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);
                  });
            });
            
            function nivoRun(slider, kids, settings, nudge){
                  //Get our vars
                  var vars = slider.data('nivo:vars');
                  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++;
                  if(vars.currentSlide == vars.totalSlides){ 
                        vars.currentSlide = 0;
                        //Trigger the slideshowEnd callback
                        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 acitve links
                  if(settings.controlNav){
                        $('.nivo-controlNav a', slider).removeClass('active');
                        $('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
                  }
                  
                  //Process caption
                  if(vars.currentImage.attr('title') != ''){
                        if($('.nivo-caption', slider).css('display') == 'block'){
                              $('.nivo-caption p', slider).fadeOut(settings.animSpeed, function(){
                                    $(this).html(vars.currentImage.attr('title'));
                                    $(this).fadeIn(settings.animSpeed);
                              });
                        } else {
                              $('.nivo-caption p', slider).html(vars.currentImage.attr('title'));
                        }                             
                        $('.nivo-caption', slider).fadeIn(settings.animSpeed);
                  } else {
                        $('.nivo-caption', slider).fadeOut(settings.animSpeed);
                  }
                  
                  //Set new slice backgrounds
                  var  i = 0;
                  $('.nivo-slice', slider).each(function(){
                        var sliceWidth = Math.round(slider.width()/settings.slices);
                        $(this).css({ height:'0px', opacity:'0', 
                              background: 'url('+ vars.currentImage.attr('src') +') no-repeat -'+ ((sliceWidth + (i * sliceWidth)) - sliceWidth) +'px 0%' });
                        i++;
                  });
                  
                  if(settings.effect == 'random'){
                        var anims = new Array("sliceDownRight","sliceDownLeft","sliceUpRight","sliceUpLeft","sliceUpDown","sliceUpDownLeft","fold","fade");
                        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 = $.trim(anims[Math.floor(Math.random()*anims.length)]);
            }
            
                  //Run effects
                  vars.running = true;
                  if(settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
                        settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft'){
                        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'){
                        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'){
                        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'){
                        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'){
                        var i = 0;
                        $('.nivo-slice', slider).each(function(){
                              $(this).css('height','100%');
                              if(i == settings.slices-1){
                                    $(this).animate({ opacity:'1.0' }, (settings.animSpeed*2), '', function(){ slider.trigger('nivo:animFinished'); });
                              } else {
                                    $(this).animate({ opacity:'1.0' }, (settings.animSpeed*2));
                              }
                              i++;
                        });
                  }
            }
      };
      
      //Default settings
      $.fn.nivoSlider.defaults = {
            effect:'random',
            slices:15,
            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,
            beforeChange: function(){},
            afterChange: function(){},
            slideshowEnd: function(){}
      };
      
      $.fn.reverse = [].reverse;
      
})(jQuery);