/*
 * jquery nivo slider v3.2
 * http://nivo.dev7studios.com
 *
 * copyright 2012, dev7studios
 * free to use and abuse under the mit license.
 * http://www.opensource.org/licenses/mit-license.php
 */

(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,
            running: false,
            paused: false,
            stop: false,
            controlnavel: false
        };

        // get this slider
        var slider = $(element);
        slider.data('nivo:vars', vars).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 = (childwidth === 0) ? child.attr('width') : child.width(),
                childheight = (childheight === 0) ? child.attr('height') : child.height();

            if(link !== ''){
                link.css('display','none');
            }
            child.css('display','none');
            vars.totalslides++;
        });
         
        // if randomstart
        if(settings.randomstart){
            settings.startslide = math.floor(math.random() * 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
        var sliderimg = $('<img/>').addclass('nivo-main-image');
        sliderimg.attr('src', vars.currentimage.attr('src')).show();
        slider.append(sliderimg);

        // detect window resize
        $(window).resize(function() {
            slider.children('img').width(slider.width());
            sliderimg.attr('src', vars.currentimage.attr('src'));
            sliderimg.stop().height('auto');
            $('.nivo-slice').remove();
            $('.nivo-box').remove();
        });

        //create caption
        slider.append($('<div class="nivo-caption"></div>'));
        
        // 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'){
                    settimeout(function(){
                        nivocaption.html(title);
                    }, settings.animspeed);
                } else {
                    nivocaption.html(title);
                    nivocaption.stop().fadein(settings.animspeed);
                }
            } else {
                nivocaption.stop().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>');
            
            $(slider).on('click', 'a.nivo-prevnav', function(){
                if(vars.running) { return false; }
                clearinterval(timer);
                timer = '';
                vars.currentslide -= 2;
                nivorun(slider, kids, settings, 'prev');
            });
            
            $(slider).on('click', 'a.nivo-nextnav', function(){
                if(vars.running) { return false; }
                clearinterval(timer);
                timer = '';
                nivorun(slider, kids, settings, 'next');
            });
        }
        
        // add control nav
        if(settings.controlnav){
            vars.controlnavel = $('<div class="nivo-controlnav"></div>');
            slider.after(vars.controlnavel);
            for(var i = 0; i < kids.length; i++){
                if(settings.controlnavthumbs){
                    vars.controlnavel.addclass('nivo-thumbs-enabled');
                    var child = kids.eq(i);
                    if(!child.is('img')){
                        child = child.find('img:first');
                    }
                    if(child.attr('data-thumb')) vars.controlnavel.append('<a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('data-thumb') +'" alt="" /></a>');
                } else {
                    vars.controlnavel.append('<a class="nivo-control" rel="'+ i +'">'+ (i + 1) +'</a>');
                }
            }

            //set initial active link
            $('a:eq('+ vars.currentslide +')', vars.controlnavel).addclass('active');
            
            $('a', vars.controlnavel).bind('click', function(){
                if(vars.running) return false;
                if($(this).hasclass('active')) return false;
                clearinterval(timer);
                timer = '';
                sliderimg.attr('src', vars.currentimage.attr('src'));
                vars.currentslide = $(this).attr('rel') - 1;
                nivorun(slider, kids, settings, 'control');
            });
        }
        
        //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(){
            sliderimg.attr('src', vars.currentimage.attr('src'));
            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) {
        	if($(vars.currentimage).parent().is('a')) $(vars.currentimage).parent().css('display','block');
            $('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').width(slider.width()).css('visibility', 'hidden').show();
            var sliceheight = ($('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').parent().is('a')) ? $('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').parent().height() : $('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').height();

            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" name="'+i+'"><img src="'+ vars.currentimage.attr('src') +'" style="position:absolute; width:'+ slider.width() +'px; height:auto; display:block !important; top:0; left:-'+ ((slicewidth + (i * slicewidth)) - slicewidth) +'px;" /></div>').css({ 
                            left:(slicewidth*i)+'px', 
                            width:(slider.width()-(slicewidth*i))+'px',
                            height:sliceheight+'px', 
                            opacity:'0',
                            overflow:'hidden'
                        })
                    );
                } else {
                    slider.append(
                        $('<div class="nivo-slice" name="'+i+'"><img src="'+ vars.currentimage.attr('src') +'" style="position:absolute; width:'+ slider.width() +'px; height:auto; display:block !important; top:0; left:-'+ ((slicewidth + (i * slicewidth)) - slicewidth) +'px;" /></div>').css({ 
                            left:(slicewidth*i)+'px', 
                            width:slicewidth+'px',
                            height:sliceheight+'px',
                            opacity:'0',
                            overflow:'hidden'
                        })
                    );
                }
            }
            
            $('.nivo-slice', slider).height(sliceheight);
            sliderimg.stop().animate({
                height: $(vars.currentimage).height()
            }, settings.animspeed);
        };
        
        // add boxes for box animations
        var createboxes = function(slider, settings, vars){
        	if($(vars.currentimage).parent().is('a')) $(vars.currentimage).parent().css('display','block');
            $('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').width(slider.width()).css('visibility', 'hidden').show();
            var boxwidth = math.round(slider.width()/settings.boxcols),
                boxheight = math.round($('img[src="'+ vars.currentimage.attr('src') +'"]', slider).not('.nivo-main-image,.nivo-control img').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" name="'+ cols +'" rel="'+ rows +'"><img src="'+ vars.currentimage.attr('src') +'" style="position:absolute; width:'+ slider.width() +'px; height:auto; display:block; top:-'+ (boxheight*rows) +'px; left:-'+ (boxwidth*cols) +'px;" /></div>').css({ 
                                opacity:0,
                                left:(boxwidth*cols)+'px', 
                                top:(boxheight*rows)+'px',
                                width:(slider.width()-(boxwidth*cols))+'px'
                                
                            })
                        );
                        $('.nivo-box[name="'+ cols +'"]', slider).height($('.nivo-box[name="'+ cols +'"] img', slider).height()+'px');
                    } else {
                        slider.append(
                            $('<div class="nivo-box" name="'+ cols +'" rel="'+ rows +'"><img src="'+ vars.currentimage.attr('src') +'" style="position:absolute; width:'+ slider.width() +'px; height:auto; display:block; top:-'+ (boxheight*rows) +'px; left:-'+ (boxwidth*cols) +'px;" /></div>').css({ 
                                opacity:0,
                                left:(boxwidth*cols)+'px', 
                                top:(boxheight*rows)+'px',
                                width:boxwidth+'px'
                            })
                        );
                        $('.nivo-box[name="'+ cols +'"]', slider).height($('.nivo-box[name="'+ cols +'"] img', slider).height()+'px');
                    }
                }
            }
            
            sliderimg.stop().animate({
                height: $(vars.currentimage).height()
            }, settings.animspeed);
        };

        // 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){
                sliderimg.attr('src', vars.currentimage.attr('src'));
            } else {
                if(nudge === 'prev'){
                    sliderimg.attr('src', vars.currentimage.attr('src'));
                }
                if(nudge === 'next'){
                    sliderimg.attr('src', vars.currentimage.attr('src'));
                }
            }
            
            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){
                $('a', vars.controlnavel).removeclass('active');
                $('a:eq('+ vars.currentslide +')', vars.controlnavel).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();
            
            var currenteffect = settings.effect,
                anims = '';
                
            // generate random effect
            if(settings.effect === 'random'){
                anims = new array('slicedownright','slicedownleft','sliceupright','sliceupleft','sliceupdown','sliceupdownleft','fold','fade',
                'boxrandom','boxrain','boxrainreverse','boxraingrow','boxraingrowreverse');
                currenteffect = anims[math.floor(math.random()*(anims.length + 1))];
                if(currenteffect === undefined) { currenteffect = 'fade'; }
            }
            
            // run random effect from specified set (eg: effect:'fold,fade')
            if(settings.effect.indexof(',') !== -1){
                anims = settings.effect.split(',');
                currenteffect = anims[math.floor(math.random()*(anims.length))];
                if(currenteffect === undefined) { currenteffect = 'fade'; }
            }
            
            // custom transition as defined by "data-transition" attribute
            if(vars.currentimage.attr('data-transition')){
                currenteffect = vars.currentimage.attr('data-transition');
            }
        
            // run effects
            vars.running = true;
            var timebuff = 0,
                i = 0,
                slices = '',
                firstslice = '',
                totalboxes = '',
                boxes = '';
            
            if(currenteffect === 'slicedown' || currenteffect === 'slicedownright' || currenteffect === 'slicedownleft'){
                createslices(slider, settings, vars);
                timebuff = 0;
                i = 0;
                slices = $('.nivo-slice', slider);
                if(currenteffect === '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({opacity:'1.0' }, settings.animspeed, '', function(){ slider.trigger('nivo:animfinished'); });
                        }, (100 + timebuff));
                    } else {
                        settimeout(function(){
                            slice.animate({opacity:'1.0' }, settings.animspeed);
                        }, (100 + timebuff));
                    }
                    timebuff += 50;
                    i++;
                });
            } else if(currenteffect === 'sliceup' || currenteffect === 'sliceupright' || currenteffect === 'sliceupleft'){
                createslices(slider, settings, vars);
                timebuff = 0;
                i = 0;
                slices = $('.nivo-slice', slider);
                if(currenteffect === '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({opacity:'1.0' }, settings.animspeed, '', function(){ slider.trigger('nivo:animfinished'); });
                        }, (100 + timebuff));
                    } else {
                        settimeout(function(){
                            slice.animate({opacity:'1.0' }, settings.animspeed);
                        }, (100 + timebuff));
                    }
                    timebuff += 50;
                    i++;
                });
            } else if(currenteffect === 'sliceupdown' || currenteffect === 'sliceupdownright' || currenteffect === 'sliceupdownleft'){
                createslices(slider, settings, vars);
                timebuff = 0;
                i = 0;
                var v = 0;
                slices = $('.nivo-slice', slider);
                if(currenteffect === '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({opacity:'1.0' }, settings.animspeed, '', function(){ slider.trigger('nivo:animfinished'); });
                        }, (100 + timebuff));
                    } else {
                        settimeout(function(){
                            slice.animate({opacity:'1.0' }, settings.animspeed);
                        }, (100 + timebuff));
                    }
                    timebuff += 50;
                    v++;
                });
            } else if(currenteffect === 'fold'){
                createslices(slider, settings, vars);
                timebuff = 0;
                i = 0;
                
                $('.nivo-slice', slider).each(function(){
                    var slice = $(this);
                    var origwidth = slice.width();
                    slice.css({ top:'0px', 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(currenteffect === 'fade'){
                createslices(slider, settings, vars);
                
                firstslice = $('.nivo-slice:first', slider);
                firstslice.css({
                    'width': slider.width() + 'px'
                });
    
                firstslice.animate({ opacity:'1.0' }, (settings.animspeed*2), '', function(){ slider.trigger('nivo:animfinished'); });
            } else if(currenteffect === 'slideinright'){
                createslices(slider, settings, vars);
                
                firstslice = $('.nivo-slice:first', slider);
                firstslice.css({
                    'width': '0px',
                    'opacity': '1'
                });

                firstslice.animate({ width: slider.width() + 'px' }, (settings.animspeed*2), '', function(){ slider.trigger('nivo:animfinished'); });
            } else if(currenteffect === 'slideinleft'){
                createslices(slider, settings, vars);
                
                firstslice = $('.nivo-slice:first', slider);
                firstslice.css({
                    '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(currenteffect === 'boxrandom'){
                createboxes(slider, settings, vars);
                
                totalboxes = settings.boxcols * settings.boxrows;
                i = 0;
                timebuff = 0;

                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(currenteffect === 'boxrain' || currenteffect === 'boxrainreverse' || currenteffect === 'boxraingrow' || currenteffect === 'boxraingrowreverse'){
                createboxes(slider, settings, vars);
                
                totalboxes = settings.boxcols * settings.boxrows;
                i = 0;
                timebuff = 0;
                
                // split boxes into 2d array
                var rowindex = 0;
                var colindex = 0;
                var box2darr = [];
                box2darr[rowindex] = [];
                boxes = $('.nivo-box', slider);
                if(currenteffect === 'boxrainreverse' || currenteffect === 'boxraingrowreverse'){
                    boxes = $('.nivo-box', slider)._reverse();
                }
                boxes.each(function(){
                    box2darr[rowindex][colindex] = $(this);
                    colindex++;
                    if(colindex === settings.boxcols){
                        rowindex++;
                        colindex = 0;
                        box2darr[rowindex] = [];
                    }
                });
                
                // 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(currenteffect === 'boxraingrow' || currenteffect === '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, 10), 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: 400,
        pausetime: 5000,
        startslide: 0,
        directionnav: true,
        controlnav: true,
        controlnavthumbs: false,
        pauseonhover: true,
        manualadvance: false,
        prevtext: 'prev',
        nexttext: 'next',
        randomstart: false,
        beforechange: function(){},
        afterchange: function(){},
        slideshowend: function(){},
        lastslide: function(){},
        afterload: function(){}
    };

    $.fn._reverse = [].reverse;
    
})(jquery);