/*

 * jQuery Nivo Slider v2.1

 * 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') != ''){

                var title = vars.currentImage.attr('title');

                if(title.substr(0,1) == '#') title = $(title).html();

                $('.nivo-caption p', slider).html(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">Prev</a><a class="nivo-nextNav">Next</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);

			});

		});

		

		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') != ''){

                var title = vars.currentImage.attr('title');

                if(title.substr(0,1) == '#') title = $(title).html();	

                    

				if($('.nivo-caption', slider).css('display') == 'block'){

					$('.nivo-caption p', slider).fadeOut(settings.animSpeed, function(){

						$(this).html(title);

						$(this).fadeIn(settings.animSpeed);

					});

				} else {

					$('.nivo-caption p', slider).html(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);