/**
 * Owl carousel
 * @version 2.0.0
 * @author Bartosz Wojciechowski
 * @license The MIT License (MIT)
 * @todo Lazy Load Icon
 * @todo prevent animationend bubling
 * @todo itemsScaleUp
 * @todo Test Zepto
 * @todo stagePadding calculate wrong active classes
 */
define(["jquery"], function ($) {
    'use strict';
    (function ($, window, document, undefined) {

        var drag, state, e;

        /**
         * Template for status information about drag and touch events.
         * @private
         */
        drag = {
            start: 0,
            startX: 0,
            startY: 0,
            current: 0,
            currentX: 0,
            currentY: 0,
            offsetX: 0,
            offsetY: 0,
            distance: null,
            startTime: 0,
            endTime: 0,
            updatedX: 0,
            targetEl: null
        };

        /**
         * Template for some status informations.
         * @private
         */
        state = {
            isTouch: false,
            isScrolling: false,
            isSwiping: false,
            direction: false,
            inMotion: false
        };

        /**
         * Event functions references.
         * @private
         */
        e = {
            _onDragStart: null,
            _onDragMove: null,
            _onDragEnd: null,
            _transitionEnd: null,
            _resizer: null,
            _responsiveCall: null,
            _goToLoop: null,
            _checkVisibile: null
        };

        /**
         * Creates a carousel.
         * @class The Owl Carousel.
         * @public
         * @param {HTMLElement|jQuery} element - The element to create the carousel for.
         * @param {Object} [options] - The options
         */
        function Owl(element, options) {

            /**
             * Current settings for the carousel.
             * @public
             */
            this.settings = null;

            /**
             * Current options set by the caller including defaults.
             * @public
             */
            this.options = $.extend({}, Owl.Defaults, options);

            /**
             * Plugin element.
             * @public
             */
            this.$element = $(element);

            /**
             * Caches informations about drag and touch events.
             */
            this.drag = $.extend({}, drag);

            /**
             * Caches some status informations.
             * @protected
             */
            this.state = $.extend({}, state);

            /**
             * @protected
             * @todo Must be documented
             */
            this.e = $.extend({}, e);

            /**
             * References to the running plugins of this carousel.
             * @protected
             */
            this._plugins = {};

            /**
             * Currently suppressed events to prevent them from beeing retriggered.
             * @protected
             */
            this._supress = {};

            /**
             * Absolute current position.
             * @protected
             */
            this._current = null;

            /**
             * Animation speed in milliseconds.
             * @protected
             */
            this._speed = null;

            /**
             * Coordinates of all items in pixel.
             * @todo The name of this member is missleading.
             * @protected
             */
            this._coordinates = [];

            /**
             * Current breakpoint.
             * @todo Real media queries would be nice.
             * @protected
             */
            this._breakpoint = null;

            /**
             * Current width of the plugin element.
             */
            this._width = null;

            /**
             * All real items.
             * @protected
             */
            this._items = [];

            /**
             * All cloned items.
             * @protected
             */
            this._clones = [];

            /**
             * Merge values of all items.
             * @todo Maybe this could be part of a plugin.
             * @protected
             */
            this._mergers = [];

            /**
             * Invalidated parts within the update process.
             * @protected
             */
            this._invalidated = {};

            /**
             * Ordered list of workers for the update process.
             * @protected
             */
            this._pipe = [];

            $.each(Owl.Plugins, $.proxy(function (key, plugin) {
                this._plugins[key[0].toLowerCase() + key.slice(1)]
                    = new plugin(this);
            }, this));

            $.each(Owl.Pipe, $.proxy(function (priority, worker) {
                this._pipe.push({
                    'filter': worker.filter,
                    'run': $.proxy(worker.run, this)
                });
            }, this));

            this.setup();
            this.initialize();
        }

        /**
         * Default options for the carousel.
         * @public
         */
        Owl.Defaults = {
            items: 3,
            loop: false,
            center: false,

            mouseDrag: true,
            touchDrag: true,
            pullDrag: true,
            freeDrag: false,

            margin: 0,
            stagePadding: 0,

            merge: false,
            mergeFit: true,
            autoWidth: false,

            startPosition: 0,
            rtl: false,

            smartSpeed: 250,
            fluidSpeed: false,
            dragEndSpeed: false,

            responsive: {},
            responsiveRefreshRate: 200,
            responsiveBaseElement: window,
            responsiveClass: false,

            fallbackEasing: 'swing',

            info: false,

            nestedItemSelector: false,
            itemElement: 'div',
            stageElement: 'div',

            // Classes and Names
            themeClass: 'owl-theme',
            baseClass: 'owl-carousel',
            itemClass: 'owl-item',
            centerClass: 'center',
            activeClass: 'active'
        };

        /**
         * Enumeration for width.
         * @public
         * @readonly
         * @enum {String}
         */
        Owl.Width = {
            Default: 'default',
            Inner: 'inner',
            Outer: 'outer'
        };

        /**
         * Contains all registered plugins.
         * @public
         */
        Owl.Plugins = {};

        /**
         * Update pipe.
         */
        Owl.Pipe = [{
            filter: ['width', 'items', 'settings'],
            run: function (cache) {
                cache.current = this._items && this._items[this.relative(this._current)];
            }
        }, {
            filter: ['items', 'settings'],
            run: function () {
                var cached = this._clones,
                    clones = this.$stage.children('.cloned');

                if (clones.length !== cached.length || (!this.settings.loop && cached.length > 0)) {
                    this.$stage.children('.cloned').remove();
                    this._clones = [];
                }
            }
        }, {
            filter: ['items', 'settings'],
            run: function () {
                var i, n,
                    clones = this._clones,
                    items = this._items,
                    delta = this.settings.loop ? clones.length - Math.max(this.settings.items * 2, 4) : 0;

                for (i = 0, n = Math.abs(delta / 2); i < n; i++) {
                    if (delta > 0) {
                        this.$stage.children().eq(items.length + clones.length - 1).remove();
                        clones.pop();
                        this.$stage.children().eq(0).remove();
                        clones.pop();
                    } else {
                        clones.push(clones.length / 2);
                        this.$stage.append(items[clones[clones.length - 1]].clone().addClass('cloned'));
                        clones.push(items.length - 1 - (clones.length - 1) / 2);
                        this.$stage.prepend(items[clones[clones.length - 1]].clone().addClass('cloned'));
                    }
                }
            }
        }, {
            filter: ['width', 'items', 'settings'],
            run: function () {
                var rtl = (this.settings.rtl ? 1 : -1),
                    width = (this.width() / this.settings.items).toFixed(3),
                    coordinate = 0, merge, i, n;

                this._coordinates = [];
                for (i = 0, n = this._clones.length + this._items.length; i < n; i++) {
                    merge = this._mergers[this.relative(i)];
                    merge = (this.settings.mergeFit && Math.min(merge, this.settings.items)) || merge;
                    coordinate += (this.settings.autoWidth ? this._items[this.relative(i)].width() + this.settings.margin : width * merge) * rtl;

                    this._coordinates.push(coordinate);
                }
            }
        }, {
            filter: ['width', 'items', 'settings'],
            run: function () {
                var i, n, width = (this.width() / this.settings.items).toFixed(3), css = {
                    'width': Math.abs(this._coordinates[this._coordinates.length - 1]) + this.settings.stagePadding * 2,
                    'padding-left': this.settings.stagePadding || '',
                    'padding-right': this.settings.stagePadding || ''
                };

                this.$stage.css(css);

                css = {'width': this.settings.autoWidth ? 'auto' : width - this.settings.margin};
                css[this.settings.rtl ? 'margin-left' : 'margin-right'] = this.settings.margin;

                if (!this.settings.autoWidth && $.grep(this._mergers, function (v) {
                    return v > 1
                }).length > 0) {
                    for (i = 0, n = this._coordinates.length; i < n; i++) {
                        css.width = Math.abs(this._coordinates[i]) - Math.abs(this._coordinates[i - 1] || 0) - this.settings.margin;
                        this.$stage.children().eq(i).css(css);
                    }
                } else {
                    this.$stage.children().css(css);
                }
            }
        }, {
            filter: ['width', 'items', 'settings'],
            run: function (cache) {
                cache.current && this.reset(this.$stage.children().index(cache.current));
            }
        }, {
            filter: ['position'],
            run: function () {
                this.animate(this.coordinates(this._current));
            }
        }, {
            filter: ['width', 'position', 'items', 'settings'],
            run: function () {
                var rtl = this.settings.rtl ? 1 : -1,
                    padding = this.settings.stagePadding * 2,
                    begin = this.coordinates(this.current()) + padding,
                    end = begin + this.width() * rtl,
                    inner, outer, matches = [], i, n;

                for (i = 0, n = this._coordinates.length; i < n; i++) {
                    inner = this._coordinates[i - 1] || 0;
                    outer = Math.abs(this._coordinates[i]) + padding * rtl;

                    if ((this.op(inner, '<=', begin) && (this.op(inner, '>', end)))
                        || (this.op(outer, '<', begin) && this.op(outer, '>', end))) {
                        matches.push(i);
                    }
                }

                this.$stage.children('.' + this.settings.activeClass).removeClass(this.settings.activeClass);
                this.$stage.children(':eq(' + matches.join('), :eq(') + ')').addClass(this.settings.activeClass);

                if (this.settings.center) {
                    this.$stage.children('.' + this.settings.centerClass).removeClass(this.settings.centerClass);
                    this.$stage.children().eq(this.current()).addClass(this.settings.centerClass);
                }
            }
        }];

        /**
         * Initializes the carousel.
         * @protected
         */
        Owl.prototype.initialize = function () {
            this.trigger('initialize');

            this.$element
                .addClass(this.settings.baseClass)
                .addClass(this.settings.themeClass)
                .toggleClass('owl-rtl', this.settings.rtl);

            // check support
            this.browserSupport();

            if (this.settings.autoWidth && this.state.imagesLoaded !== true) {
                var imgs, nestedSelector, width;
                imgs = this.$element.find('img');
                nestedSelector = this.settings.nestedItemSelector ? '.' + this.settings.nestedItemSelector : undefined;
                width = this.$element.children(nestedSelector).width();

                if (imgs.length && width <= 0) {
                    this.preloadAutoWidthImages(imgs);
                    return false;
                }
            }

            this.$element.addClass('owl-loading');

            // create stage
            this.$stage = $('<' + this.settings.stageElement + ' class="owl-stage"/>')
                .wrap('<div class="owl-stage-outer">');

            // append stage
            this.$element.append(this.$stage.parent());

            // append content
            this.replace(this.$element.children().not(this.$stage.parent()));

            // set view width
            this._width = this.$element.width();

            // update view
            this.refresh();

            this.$element.removeClass('owl-loading').addClass('owl-loaded');

            // attach generic events
            this.eventsCall();

            // attach generic events
            this.internalEvents();

            // attach custom control events
            this.addTriggerableEvents();

            this.trigger('initialized');
        };

        /**
         * Setups the current settings.
         * @todo Remove responsive classes. Why should adaptive designs be brought into IE8?
         * @todo Support for media queries by using `matchMedia` would be nice.
         * @public
         */
        Owl.prototype.setup = function () {
            var viewport = this.viewport(),
                overwrites = this.options.responsive,
                match = -1,
                settings = null;

            if (!overwrites) {
                settings = $.extend({}, this.options);
            } else {
                $.each(overwrites, function (breakpoint) {
                    if (breakpoint <= viewport && breakpoint > match) {
                        match = Number(breakpoint);
                    }
                });

                settings = $.extend({}, this.options, overwrites[match]);
                delete settings.responsive;

                // responsive class
                if (settings.responsiveClass) {
                    this.$element.attr('class', function (i, c) {
                        return c.replace(/\b owl-responsive-\S+/g, '');
                    }).addClass('owl-responsive-' + match);
                }
            }

            if (this.settings === null || this._breakpoint !== match) {
                this.trigger('change', {property: {name: 'settings', value: settings}});
                this._breakpoint = match;
                this.settings = settings;
                this.invalidate('settings');
                this.trigger('changed', {property: {name: 'settings', value: this.settings}});
            }
        };

        /**
         * Updates option logic if necessery.
         * @protected
         */
        Owl.prototype.optionsLogic = function () {
            // Toggle Center class
            this.$element.toggleClass('owl-center', this.settings.center);

            // if items number is less than in body
            if (this.settings.loop && this._items.length < this.settings.items) {
                this.settings.loop = false;
            }

            if (this.settings.autoWidth) {
                this.settings.stagePadding = false;
                this.settings.merge = false;
            }
        };

        /**
         * Prepares an item before add.
         * @todo Rename event parameter `content` to `item`.
         * @protected
         * @returns {jQuery|HTMLElement} - The item container.
         */
        Owl.prototype.prepare = function (item) {
            var event = this.trigger('prepare', {content: item});

            if (!event.data) {
                event.data = $('<' + this.settings.itemElement + '/>')
                    .addClass(this.settings.itemClass).append(item)
            }

            this.trigger('prepared', {content: event.data});

            return event.data;
        };

        /**
         * Updates the view.
         * @public
         */
        Owl.prototype.update = function () {
            var i = 0,
                n = this._pipe.length,
                filter = $.proxy(function (p) {
                    return this[p]
                }, this._invalidated),
                cache = {};

            while (i < n) {
                if (this._invalidated.all || $.grep(this._pipe[i].filter, filter).length > 0) {
                    this._pipe[i].run(cache);
                }
                i++;
            }

            this._invalidated = {};
        };

        /**
         * Gets the width of the view.
         * @public
         * @param {Owl.Width} [dimension=Owl.Width.Default] - The dimension to return.
         * @returns {Number} - The width of the view in pixel.
         */
        Owl.prototype.width = function (dimension) {
            dimension = dimension || Owl.Width.Default;
            switch (dimension) {
                case Owl.Width.Inner:
                case Owl.Width.Outer:
                    return this._width;
                default:
                    return this._width - this.settings.stagePadding * 2 + this.settings.margin;
            }
        };

        /**
         * Refreshes the carousel primarily for adaptive purposes.
         * @public
         */
        Owl.prototype.refresh = function () {
            if (this._items.length === 0) {
                return false;
            }

            var start = new Date().getTime();

            this.trigger('refresh');

            this.setup();

            this.optionsLogic();

            // hide and show methods helps here to set a proper widths,
            // this prevents scrollbar to be calculated in stage width
            this.$stage.addClass('owl-refresh');

            this.update();

            this.$stage.removeClass('owl-refresh');

            this.state.orientation = window.orientation;

            this.watchVisibility();

            this.trigger('refreshed');
        };

        /**
         * Save internal event references and add event based functions.
         * @protected
         */
        Owl.prototype.eventsCall = function () {
            // Save events references
            this.e._onDragStart = $.proxy(function (e) {
                this.onDragStart(e);
            }, this);
            this.e._onDragMove = $.proxy(function (e) {
                this.onDragMove(e);
            }, this);
            this.e._onDragEnd = $.proxy(function (e) {
                this.onDragEnd(e);
            }, this);
            this.e._onResize = $.proxy(function (e) {
                this.onResize(e);
            }, this);
            this.e._transitionEnd = $.proxy(function (e) {
                this.transitionEnd(e);
            }, this);
            this.e._preventClick = $.proxy(function (e) {
                this.preventClick(e);
            }, this);
        };

        /**
         * Checks window `resize` event.
         * @protected
         */
        Owl.prototype.onThrottledResize = function () {
            window.clearTimeout(this.resizeTimer);
            this.resizeTimer = window.setTimeout(this.e._onResize, this.settings.responsiveRefreshRate);
        };

        /**
         * Checks window `resize` event.
         * @protected
         */
        Owl.prototype.onResize = function () {
            if (!this._items.length) {
                return false;
            }

            if (this._width === this.$element.width()) {
                return false;
            }

            if (this.trigger('resize').isDefaultPrevented()) {
                return false;
            }

            this._width = this.$element.width();

            this.invalidate('width');

            this.refresh();

            this.trigger('resized');
        };

        /**
         * Checks for touch/mouse drag event type and add run event handlers.
         * @protected
         */
        Owl.prototype.eventsRouter = function (event) {
            var type = event.type;

            if (type === "mousedown" || type === "touchstart") {
                this.onDragStart(event);
            } else if (type === "mousemove" || type === "touchmove") {
                this.onDragMove(event);
            } else if (type === "mouseup" || type === "touchend") {
                this.onDragEnd(event);
            } else if (type === "touchcancel") {
                this.onDragEnd(event);
            }
        };

        /**
         * Checks for touch/mouse drag options and add necessery event handlers.
         * @protected
         */
        Owl.prototype.internalEvents = function () {
            var isTouch = isTouchSupport(),
                isTouchIE = isTouchSupportIE();

            if (this.settings.mouseDrag) {
                this.$stage.on('mousedown', $.proxy(function (event) {
                    this.eventsRouter(event)
                }, this));
                this.$stage.on('dragstart', function () {
                    return false
                });
                this.$stage.get(0).onselectstart = function () {
                    return false
                };
            } else {
                this.$element.addClass('owl-text-select-on');
            }

            if (this.settings.touchDrag && !isTouchIE) {
                this.$stage.on('touchstart touchcancel', $.proxy(function (event) {
                    this.eventsRouter(event)
                }, this));
            }

            // catch transitionEnd event
            if (this.transitionEndVendor) {
                this.on(this.$stage.get(0), this.transitionEndVendor, this.e._transitionEnd, false);
            }

            // responsive
            if (this.settings.responsive !== false) {
                this.on(window, 'resize', $.proxy(this.onThrottledResize, this));
            }
        };

        /**
         * Handles touchstart/mousedown event.
         * @protected
         * @param {Event} event - The event arguments.
         */
        Owl.prototype.onDragStart = function (event) {
            var ev, isTouchEvent, pageX, pageY, animatedPos;

            ev = event.originalEvent || event || window.event;

            // prevent right click
            if (ev.which === 3 || this.state.isTouch) {
                return false;
            }

            if (ev.type === 'mousedown') {
                this.$stage.addClass('owl-grab');
            }

            this.trigger('drag');
            this.drag.startTime = new Date().getTime();
            this.speed(0);
            this.state.isTouch = true;
            this.state.isScrolling = false;
            this.state.isSwiping = false;
            this.drag.distance = 0;

            pageX = getTouches(ev).x;
            pageY = getTouches(ev).y;

            // get stage position left
            this.drag.offsetX = this.$stage.position().left;
            this.drag.offsetY = this.$stage.position().top;

            if (this.settings.rtl) {
                this.drag.offsetX = this.$stage.position().left + this.$stage.width() - this.width()
                    + this.settings.margin;
            }

            // catch position // ie to fix
            if (this.state.inMotion && this.support3d) {
                animatedPos = this.getTransformProperty();
                this.drag.offsetX = animatedPos;
                this.animate(animatedPos);
                this.state.inMotion = true;
            } else if (this.state.inMotion && !this.support3d) {
                this.state.inMotion = false;
                return false;
            }

            this.drag.startX = pageX - this.drag.offsetX;
            this.drag.startY = pageY - this.drag.offsetY;

            this.drag.start = pageX - this.drag.startX;
            this.drag.targetEl = ev.target || ev.srcElement;
            this.drag.updatedX = this.drag.start;

            // to do/check
            // prevent links and images dragging;
            if (this.drag.targetEl.tagName === "IMG" || this.drag.targetEl.tagName === "A") {
                this.drag.targetEl.draggable = false;
            }

            $(document).on('mousemove.owl.dragEvents mouseup.owl.dragEvents touchmove.owl.dragEvents touchend.owl.dragEvents', $.proxy(function (event) {
                this.eventsRouter(event)
            }, this));
        };

        /**
         * Handles the touchmove/mousemove events.
         * @todo Simplify
         * @protected
         * @param {Event} event - The event arguments.
         */
        Owl.prototype.onDragMove = function (event) {
            var ev, isTouchEvent, pageX, pageY, minValue, maxValue, pull;

            if (!this.state.isTouch) {
                return;
            }

            if (this.state.isScrolling) {
                return;
            }

            ev = event.originalEvent || event || window.event;

            pageX = getTouches(ev).x;
            pageY = getTouches(ev).y;

            // Drag Direction
            this.drag.currentX = pageX - this.drag.startX;
            this.drag.currentY = pageY - this.drag.startY;
            this.drag.distance = this.drag.currentX - this.drag.offsetX;

            // Check move direction
            if (this.drag.distance < 0) {
                this.state.direction = this.settings.rtl ? 'right' : 'left';
            } else if (this.drag.distance > 0) {
                this.state.direction = this.settings.rtl ? 'left' : 'right';
            }
            // Loop
            if (this.settings.loop) {
                if (this.op(this.drag.currentX, '>', this.coordinates(this.minimum())) && this.state.direction === 'right') {
                    this.drag.currentX -= (this.settings.center && this.coordinates(0)) - this.coordinates(this._items.length);
                } else if (this.op(this.drag.currentX, '<', this.coordinates(this.maximum())) && this.state.direction === 'left') {
                    this.drag.currentX += (this.settings.center && this.coordinates(0)) - this.coordinates(this._items.length);
                }
            } else {
                // pull
                minValue = this.settings.rtl ? this.coordinates(this.maximum()) : this.coordinates(this.minimum());
                maxValue = this.settings.rtl ? this.coordinates(this.minimum()) : this.coordinates(this.maximum());
                pull = this.settings.pullDrag ? this.drag.distance / 5 : 0;
                this.drag.currentX = Math.max(Math.min(this.drag.currentX, minValue + pull), maxValue + pull);
            }

            // Lock browser if swiping horizontal

            if ((this.drag.distance > 8 || this.drag.distance < -8)) {
                if (ev.preventDefault !== undefined) {
                    ev.preventDefault();
                } else {
                    ev.returnValue = false;
                }
                this.state.isSwiping = true;
            }

            this.drag.updatedX = this.drag.currentX;

            // Lock Owl if scrolling
            if ((this.drag.currentY > 16 || this.drag.currentY < -16) && this.state.isSwiping === false) {
                this.state.isScrolling = true;
                this.drag.updatedX = this.drag.start;
            }

            this.animate(this.drag.updatedX);
        };

        /**
         * Handles the touchend/mouseup events.
         * @protected
         */
        Owl.prototype.onDragEnd = function (event) {
            var compareTimes, distanceAbs, closest;

            if (!this.state.isTouch) {
                return;
            }

            if (event.type === 'mouseup') {
                this.$stage.removeClass('owl-grab');
            }

            this.trigger('dragged');

            // prevent links and images dragging;
            this.drag.targetEl.removeAttribute("draggable");

            // remove drag event listeners

            this.state.isTouch = false;
            this.state.isScrolling = false;
            this.state.isSwiping = false;

            // to check
            if (this.drag.distance === 0 && this.state.inMotion !== true) {
                this.state.inMotion = false;
                return false;
            }

            // prevent clicks while scrolling

            this.drag.endTime = new Date().getTime();
            compareTimes = this.drag.endTime - this.drag.startTime;
            distanceAbs = Math.abs(this.drag.distance);

            // to test
            if (distanceAbs > 3 || compareTimes > 300) {
                this.removeClick(this.drag.targetEl);
            }

            closest = this.closest(this.drag.updatedX);

            this.speed(this.settings.dragEndSpeed || this.settings.smartSpeed);
            this.current(closest);
            this.invalidate('position');
            this.update();

            // if pullDrag is off then fire transitionEnd event manually when stick
            // to border
            if (!this.settings.pullDrag && this.drag.updatedX === this.coordinates(closest)) {
                this.transitionEnd();
            }

            this.drag.distance = 0;

            $(document).off('.owl.dragEvents');
        };

        /**
         * Attaches `preventClick` to disable link while swipping.
         * @protected
         * @param {HTMLElement} [target] - The target of the `click` event.
         */
        Owl.prototype.removeClick = function (target) {
            this.drag.targetEl = target;
            $(target).on('click.preventClick', this.e._preventClick);
            // to make sure click is removed:
            window.setTimeout(function () {
                $(target).off('click.preventClick');
            }, 300);
        };

        /**
         * Suppresses click event.
         * @protected
         * @param {Event} ev - The event arguments.
         */
        Owl.prototype.preventClick = function (ev) {
            if (ev.preventDefault) {
                ev.preventDefault();
            } else {
                ev.returnValue = false;
            }
            if (ev.stopPropagation) {
                ev.stopPropagation();
            }
            $(ev.target).off('click.preventClick');
        };

        /**
         * Catches stage position while animate (only CSS3).
         * @protected
         * @returns
         */
        Owl.prototype.getTransformProperty = function () {
            var transform, matrix3d;

            transform = window.getComputedStyle(this.$stage.get(0), null).getPropertyValue(this.vendorName + 'transform');
            // var transform = this.$stage.css(this.vendorName + 'transform')
            transform = transform.replace(/matrix(3d)?\(|\)/g, '').split(',');
            matrix3d = transform.length === 16;

            return matrix3d !== true ? transform[4] : transform[12];
        };

        /**
         * Gets absolute position of the closest item for a coordinate.
         * @todo Setting `freeDrag` makes `closest` not reusable. See #165.
         * @protected
         * @param {Number} coordinate - The coordinate in pixel.
         * @return {Number} - The absolute position of the closest item.
         */
        Owl.prototype.closest = function (coordinate) {
            var position = -1, pull = 30, width = this.width(), coordinates = this.coordinates();

            if (!this.settings.freeDrag) {
                // check closest item
                $.each(coordinates, $.proxy(function (index, value) {
                    if (coordinate > value - pull && coordinate < value + pull) {
                        position = index;
                    } else if (this.op(coordinate, '<', value)
                        && this.op(coordinate, '>', coordinates[index + 1] || value - width)) {
                        position = this.state.direction === 'left' ? index + 1 : index;
                    }
                    return position === -1;
                }, this));
            }

            if (!this.settings.loop) {
                // non loop boundries
                if (this.op(coordinate, '>', coordinates[this.minimum()])) {
                    position = coordinate = this.minimum();
                } else if (this.op(coordinate, '<', coordinates[this.maximum()])) {
                    position = coordinate = this.maximum();
                }
            }

            return position;
        };

        /**
         * Animates the stage.
         * @public
         * @param {Number} coordinate - The coordinate in pixels.
         */
        Owl.prototype.animate = function (coordinate) {
            this.trigger('translate');
            this.state.inMotion = this.speed() > 0;

            if (this.support3d) {
                this.$stage.css({
                    transform: 'translate3d(' + coordinate + 'px' + ',0px, 0px)',
                    transition: (this.speed() / 1000) + 's'
                });
            } else if (this.state.isTouch) {
                this.$stage.css({
                    left: coordinate + 'px'
                });
            } else {
                this.$stage.animate({
                    left: coordinate
                }, this.speed() / 1000, this.settings.fallbackEasing, $.proxy(function () {
                    if (this.state.inMotion) {
                        this.transitionEnd();
                    }
                }, this));
            }
        };

        /**
         * Sets the absolute position of the current item.
         * @public
         * @param {Number} [position] - The new absolute position or nothing to leave it unchanged.
         * @returns {Number} - The absolute position of the current item.
         */
        Owl.prototype.current = function (position) {
            if (position === undefined) {
                return this._current;
            }

            if (this._items.length === 0) {
                return undefined;
            }

            position = this.normalize(position);

            if (this._current !== position) {
                var event = this.trigger('change', {property: {name: 'position', value: position}});

                if (event.data !== undefined) {
                    position = this.normalize(event.data);
                }

                this._current = position;

                this.invalidate('position');

                this.trigger('changed', {property: {name: 'position', value: this._current}});
            }

            return this._current;
        };

        /**
         * Invalidates the given part of the update routine.
         * @param {String} part - The part to invalidate.
         */
        Owl.prototype.invalidate = function (part) {
            this._invalidated[part] = true;
        }

        /**
         * Resets the absolute position of the current item.
         * @public
         * @param {Number} position - The absolute position of the new item.
         */
        Owl.prototype.reset = function (position) {
            position = this.normalize(position);

            if (position === undefined) {
                return;
            }

            this._speed = 0;
            this._current = position;

            this.suppress(['translate', 'translated']);

            this.animate(this.coordinates(position));

            this.release(['translate', 'translated']);
        };

        /**
         * Normalizes an absolute or a relative position for an item.
         * @public
         * @param {Number} position - The absolute or relative position to normalize.
         * @param {Boolean} [relative=false] - Whether the given position is relative or not.
         * @returns {Number} - The normalized position.
         */
        Owl.prototype.normalize = function (position, relative) {
            var n = (relative ? this._items.length : this._items.length + this._clones.length);

            if (!$.isNumeric(position) || n < 1) {
                return undefined;
            }

            if (this._clones.length) {
                position = ((position % n) + n) % n;
            } else {
                position = Math.max(this.minimum(relative), Math.min(this.maximum(relative), position));
            }

            return position;
        };

        /**
         * Converts an absolute position for an item into a relative position.
         * @public
         * @param {Number} position - The absolute position to convert.
         * @returns {Number} - The converted position.
         */
        Owl.prototype.relative = function (position) {
            position = this.normalize(position);
            position = position - this._clones.length / 2;
            return this.normalize(position, true);
        };

        /**
         * Gets the maximum position for an item.
         * @public
         * @param {Boolean} [relative=false] - Whether to return an absolute position or a relative position.
         * @returns {Number}
         */
        Owl.prototype.maximum = function (relative) {
            var maximum, width, i = 0, coordinate,
                settings = this.settings;

            if (relative) {
                return this._items.length - 1;
            }

            if (!settings.loop && settings.center) {
                maximum = this._items.length - 1;
            } else if (!settings.loop && !settings.center) {
                maximum = this._items.length - settings.items;
            } else if (settings.loop || settings.center) {
                maximum = this._items.length + settings.items;
            } else if (settings.autoWidth || settings.merge) {
                revert = settings.rtl ? 1 : -1;
                width = this.$stage.width() - this.$element.width();
                while (coordinate = this.coordinates(i)) {
                    if (coordinate * revert >= width) {
                        break;
                    }
                    maximum = ++i;
                }
            } else {
                throw 'Can not detect maximum absolute position.'
            }

            return maximum;
        };

        /**
         * Gets the minimum position for an item.
         * @public
         * @param {Boolean} [relative=false] - Whether to return an absolute position or a relative position.
         * @returns {Number}
         */
        Owl.prototype.minimum = function (relative) {
            if (relative) {
                return 0;
            }

            return this._clones.length / 2;
        };

        /**
         * Gets an item at the specified relative position.
         * @public
         * @param {Number} [position] - The relative position of the item.
         * @return {jQuery|Array.<jQuery>} - The item at the given position or all items if no position was given.
         */
        Owl.prototype.items = function (position) {
            if (position === undefined) {
                return this._items.slice();
            }

            position = this.normalize(position, true);
            return this._items[position];
        };

        /**
         * Gets an item at the specified relative position.
         * @public
         * @param {Number} [position] - The relative position of the item.
         * @return {jQuery|Array.<jQuery>} - The item at the given position or all items if no position was given.
         */
        Owl.prototype.mergers = function (position) {
            if (position === undefined) {
                return this._mergers.slice();
            }

            position = this.normalize(position, true);
            return this._mergers[position];
        };

        /**
         * Gets the absolute positions of clones for an item.
         * @public
         * @param {Number} [position] - The relative position of the item.
         * @returns {Array.<Number>} - The absolute positions of clones for the item or all if no position was given.
         */
        Owl.prototype.clones = function (position) {
            var odd = this._clones.length / 2,
                even = odd + this._items.length,
                map = function (index) {
                    return index % 2 === 0 ? even + index / 2 : odd - (index + 1) / 2
                };

            if (position === undefined) {
                return $.map(this._clones, function (v, i) {
                    return map(i)
                });
            }

            return $.map(this._clones, function (v, i) {
                return v === position ? map(i) : null
            });
        };

        /**
         * Sets the current animation speed.
         * @public
         * @param {Number} [speed] - The animation speed in milliseconds or nothing to leave it unchanged.
         * @returns {Number} - The current animation speed in milliseconds.
         */
        Owl.prototype.speed = function (speed) {
            if (speed !== undefined) {
                this._speed = speed;
            }

            return this._speed;
        };

        /**
         * Gets the coordinate of an item.
         * @todo The name of this method is missleanding.
         * @public
         * @param {Number} position - The absolute position of the item within `minimum()` and `maximum()`.
         * @returns {Number|Array.<Number>} - The coordinate of the item in pixel or all coordinates.
         */
        Owl.prototype.coordinates = function (position) {
            var coordinate = null;

            if (position === undefined) {
                return $.map(this._coordinates, $.proxy(function (coordinate, index) {
                    return this.coordinates(index);
                }, this));
            }

            if (this.settings.center) {
                coordinate = this._coordinates[position];
                coordinate += (this.width() - coordinate + (this._coordinates[position - 1] || 0)) / 2 * (this.settings.rtl ? -1 : 1);
            } else {
                coordinate = this._coordinates[position - 1] || 0;
            }

            return coordinate;
        };

        /**
         * Calculates the speed for a translation.
         * @protected
         * @param {Number} from - The absolute position of the start item.
         * @param {Number} to - The absolute position of the target item.
         * @param {Number} [factor=undefined] - The time factor in milliseconds.
         * @returns {Number} - The time in milliseconds for the translation.
         */
        Owl.prototype.duration = function (from, to, factor) {
            return Math.min(Math.max(Math.abs(to - from), 1), 6) * Math.abs((factor || this.settings.smartSpeed));
        };

        /**
         * Slides to the specified item.
         * @public
         * @param {Number} position - The position of the item.
         * @param {Number} [speed] - The time in milliseconds for the transition.
         */
        Owl.prototype.to = function (position, speed) {
            if (this.settings.loop) {
                var distance = position - this.relative(this.current()),
                    revert = this.current(),
                    before = this.current(),
                    after = this.current() + distance,
                    direction = before - after < 0 ? true : false,
                    items = this._clones.length + this._items.length;

                if (after < this.settings.items && direction === false) {
                    revert = before + this._items.length;
                    this.reset(revert);
                } else if (after >= items - this.settings.items && direction === true) {
                    revert = before - this._items.length;
                    this.reset(revert);
                }
                window.clearTimeout(this.e._goToLoop);
                this.e._goToLoop = window.setTimeout($.proxy(function () {
                    this.speed(this.duration(this.current(), revert + distance, speed));
                    this.current(revert + distance);
                    this.update();
                }, this), 30);
            } else {
                this.speed(this.duration(this.current(), position, speed));
                this.current(position);
                this.update();
            }
        };

        /**
         * Slides to the next item.
         * @public
         * @param {Number} [speed] - The time in milliseconds for the transition.
         */
        Owl.prototype.next = function (speed) {
            speed = speed || false;
            this.to(this.relative(this.current()) + 1, speed);
        };

        /**
         * Slides to the previous item.
         * @public
         * @param {Number} [speed] - The time in milliseconds for the transition.
         */
        Owl.prototype.prev = function (speed) {
            speed = speed || false;
            this.to(this.relative(this.current()) - 1, speed);
        };

        /**
         * Handles the end of an animation.
         * @protected
         * @param {Event} event - The event arguments.
         */
        Owl.prototype.transitionEnd = function (event) {

            // if css2 animation then event object is undefined
            if (event !== undefined) {
                event.stopPropagation();

                // Catch only owl-stage transitionEnd event
                if ((event.target || event.srcElement || event.originalTarget) !== this.$stage.get(0)) {
                    return false;
                }
            }

            this.state.inMotion = false;
            this.trigger('translated');
        };

        /**
         * Gets viewport width.
         * @protected
         * @return {Number} - The width in pixel.
         */
        Owl.prototype.viewport = function () {
            var width;
            if (this.options.responsiveBaseElement !== window) {
                width = $(this.options.responsiveBaseElement).width();
            } else if (window.innerWidth) {
                width = window.innerWidth;
            } else if (document.documentElement && document.documentElement.clientWidth) {
                width = document.documentElement.clientWidth;
            } else {
                throw 'Can not detect viewport width.';
            }
            return width;
        };

        /**
         * Replaces the current content.
         * @public
         * @param {HTMLElement|jQuery|String} content - The new content.
         */
        Owl.prototype.replace = function (content) {
            this.$stage.empty();
            this._items = [];

            if (content) {
                content = (content instanceof jQuery) ? content : $(content);
            }

            if (this.settings.nestedItemSelector) {
                content = content.find('.' + this.settings.nestedItemSelector);
            }

            content.filter(function () {
                return this.nodeType === 1;
            }).each($.proxy(function (index, item) {
                item = this.prepare(item);
                this.$stage.append(item);
                this._items.push(item);
                this._mergers.push(item.find('[data-merge]').andSelf('[data-merge]').attr('data-merge') * 1 || 1);
            }, this));

            this.reset($.isNumeric(this.settings.startPosition) ? this.settings.startPosition : 0);

            this.invalidate('items');
        };

        /**
         * Adds an item.
         * @todo Use `item` instead of `content` for the event arguments.
         * @public
         * @param {HTMLElement|jQuery|String} content - The item content to add.
         * @param {Number} [position] - The relative position at which to insert the item otherwise the item will be added to the end.
         */
        Owl.prototype.add = function (content, position) {
            position = position === undefined ? this._items.length : this.normalize(position, true);

            this.trigger('add', {content: content, position: position});

            if (this._items.length === 0 || position === this._items.length) {
                this.$stage.append(content);
                this._items.push(content);
                this._mergers.push(content.find('[data-merge]').andSelf('[data-merge]').attr('data-merge') * 1 || 1);
            } else {
                this._items[position].before(content);
                this._items.splice(position, 0, content);
                this._mergers.splice(position, 0, content.find('[data-merge]').andSelf('[data-merge]').attr('data-merge') * 1 || 1);
            }

            this.invalidate('items');

            this.trigger('added', {content: content, position: position});
        };

        /**
         * Removes an item by its position.
         * @todo Use `item` instead of `content` for the event arguments.
         * @public
         * @param {Number} position - The relative position of the item to remove.
         */
        Owl.prototype.remove = function (position) {
            position = this.normalize(position, true);

            if (position === undefined) {
                return;
            }

            this.trigger('remove', {content: this._items[position], position: position});

            this._items[position].remove();
            this._items.splice(position, 1);
            this._mergers.splice(position, 1);

            this.invalidate('items');

            this.trigger('removed', {content: null, position: position});
        };

        /**
         * Adds triggerable events.
         * @protected
         */
        Owl.prototype.addTriggerableEvents = function () {
            var handler = $.proxy(function (callback, event) {
                return $.proxy(function (e) {
                    if (e.relatedTarget !== this) {
                        this.suppress([event]);
                        callback.apply(this, [].slice.call(arguments, 1));
                        this.release([event]);
                    }
                }, this);
            }, this);

            $.each({
                'next': this.next,
                'prev': this.prev,
                'to': this.to,
                'destroy': this.destroy,
                'refresh': this.refresh,
                'replace': this.replace,
                'add': this.add,
                'remove': this.remove
            }, $.proxy(function (event, callback) {
                this.$element.on(event + '.owl.carousel', handler(callback, event + '.owl.carousel'));
            }, this));

        };

        /**
         * Watches the visibility of the carousel element.
         * @protected
         */
        Owl.prototype.watchVisibility = function () {

            // test on zepto
            if (!isElVisible(this.$element.get(0))) {
                this.$element.addClass('owl-hidden');
                window.clearInterval(this.e._checkVisibile);
                this.e._checkVisibile = window.setInterval($.proxy(checkVisible, this), 500);
            }

            function isElVisible(el) {
                return el.offsetWidth > 0 && el.offsetHeight > 0;
            }

            function checkVisible() {
                if (isElVisible(this.$element.get(0))) {
                    this.$element.removeClass('owl-hidden');
                    this.refresh();
                    window.clearInterval(this.e._checkVisibile);
                }
            }
        };

        /**
         * Preloads images with auto width.
         * @protected
         * @todo Still to test
         */
        Owl.prototype.preloadAutoWidthImages = function (imgs) {
            var loaded, that, $el, img;

            loaded = 0;
            that = this;
            imgs.each(function (i, el) {
                $el = $(el);
                img = new Image();

                img.onload = function () {
                    loaded++;
                    $el.attr('src', img.src);
                    $el.css('opacity', 1);
                    if (loaded >= imgs.length) {
                        that.state.imagesLoaded = true;
                        that.initialize();
                    }
                };

                img.src = $el.attr('src') || $el.attr('data-src') || $el.attr('data-src-retina');
            });
        };

        /**
         * Destroys the carousel.
         * @public
         */
        Owl.prototype.destroy = function () {

            if (this.$element.hasClass(this.settings.themeClass)) {
                this.$element.removeClass(this.settings.themeClass);
            }

            if (this.settings.responsive !== false) {
                $(window).off('resize.owl.carousel');
            }

            if (this.transitionEndVendor) {
                this.off(this.$stage.get(0), this.transitionEndVendor, this.e._transitionEnd);
            }

            for (var i in this._plugins) {
                this._plugins[i].destroy();
            }

            if (this.settings.mouseDrag || this.settings.touchDrag) {
                this.$stage.off('mousedown touchstart touchcancel');
                $(document).off('.owl.dragEvents');
                this.$stage.get(0).onselectstart = function () {
                };
                this.$stage.off('dragstart', function () {
                    return false
                });
            }

            // remove event handlers in the ".owl.carousel" namespace
            this.$element.off('.owl');

            this.$stage.children('.cloned').remove();
            this.e = null;
            this.$element.removeData('owlCarousel');

            this.$stage.children().contents().unwrap();
            this.$stage.children().unwrap();
            this.$stage.unwrap();
        };

        /**
         * Operators to calculate right-to-left and left-to-right.
         * @protected
         * @param {Number} [a] - The left side operand.
         * @param {String} [o] - The operator.
         * @param {Number} [b] - The right side operand.
         */
        Owl.prototype.op = function (a, o, b) {
            var rtl = this.settings.rtl;
            switch (o) {
                case '<':
                    return rtl ? a > b : a < b;
                case '>':
                    return rtl ? a < b : a > b;
                case '>=':
                    return rtl ? a <= b : a >= b;
                case '<=':
                    return rtl ? a >= b : a <= b;
                default:
                    break;
            }
        };

        /**
         * Attaches to an internal event.
         * @protected
         * @param {HTMLElement} element - The event source.
         * @param {String} event - The event name.
         * @param {Function} listener - The event handler to attach.
         * @param {Boolean} capture - Wether the event should be handled at the capturing phase or not.
         */
        Owl.prototype.on = function (element, event, listener, capture) {
            if (element.addEventListener) {
                element.addEventListener(event, listener, capture);
            } else if (element.attachEvent) {
                element.attachEvent('on' + event, listener);
            }
        };

        /**
         * Detaches from an internal event.
         * @protected
         * @param {HTMLElement} element - The event source.
         * @param {String} event - The event name.
         * @param {Function} listener - The attached event handler to detach.
         * @param {Boolean} capture - Wether the attached event handler was registered as a capturing listener or not.
         */
        Owl.prototype.off = function (element, event, listener, capture) {
            if (element.removeEventListener) {
                element.removeEventListener(event, listener, capture);
            } else if (element.detachEvent) {
                element.detachEvent('on' + event, listener);
            }
        };

        /**
         * Triggers an public event.
         * @protected
         * @param {String} name - The event name.
         * @param {*} [data=null] - The event data.
         * @param {String} [namespace=.owl.carousel] - The event namespace.
         * @returns {Event} - The event arguments.
         */
        Owl.prototype.trigger = function (name, data, namespace) {
            var status = {
                item: {count: this._items.length, index: this.current()}
            }, handler = $.camelCase(
                $.grep(['on', name, namespace], function (v) {
                    return v
                })
                    .join('-').toLowerCase()
            ), event = $.Event(
                [name, 'owl', namespace || 'carousel'].join('.').toLowerCase(),
                $.extend({relatedTarget: this}, status, data)
            );

            if (!this._supress[name]) {
                $.each(this._plugins, function (name, plugin) {
                    if (plugin.onTrigger) {
                        plugin.onTrigger(event);
                    }
                });

                this.$element.trigger(event);

                if (this.settings && typeof this.settings[handler] === 'function') {
                    this.settings[handler].apply(this, event);
                }
            }

            return event;
        };

        /**
         * Suppresses events.
         * @protected
         * @param {Array.<String>} events - The events to suppress.
         */
        Owl.prototype.suppress = function (events) {
            $.each(events, $.proxy(function (index, event) {
                this._supress[event] = true;
            }, this));
        }

        /**
         * Releases suppressed events.
         * @protected
         * @param {Array.<String>} events - The events to release.
         */
        Owl.prototype.release = function (events) {
            $.each(events, $.proxy(function (index, event) {
                delete this._supress[event];
            }, this));
        }

        /**
         * Checks the availability of some browser features.
         * @protected
         */
        Owl.prototype.browserSupport = function () {
            this.support3d = isPerspective();

            if (this.support3d) {
                this.transformVendor = isTransform();

                // take transitionend event name by detecting transition
                var endVendors = ['transitionend', 'webkitTransitionEnd', 'transitionend', 'oTransitionEnd'];
                this.transitionEndVendor = endVendors[isTransition()];

                // take vendor name from transform name
                this.vendorName = this.transformVendor.replace(/Transform/i, '');
                this.vendorName = this.vendorName !== '' ? '-' + this.vendorName.toLowerCase() + '-' : '';
            }

            this.state.orientation = window.orientation;
        };

        /**
         * Get touch/drag coordinats.
         * @private
         * @param {event} - mousedown/touchstart event
         * @returns {object} - Contains X and Y of current mouse/touch position
         */

        function getTouches(event) {
            if (event.touches !== undefined) {
                return {
                    x: event.touches[0].pageX,
                    y: event.touches[0].pageY
                };
            }

            if (event.touches === undefined) {
                if (event.pageX !== undefined) {
                    return {
                        x: event.pageX,
                        y: event.pageY
                    };
                }

                if (event.pageX === undefined) {
                    return {
                        x: event.clientX,
                        y: event.clientY
                    };
                }
            }
        }

        /**
         * Checks for CSS support.
         * @private
         * @param {Array} array - The CSS properties to check for.
         * @returns {Array} - Contains the supported CSS property name and its index or `false`.
         */
        function isStyleSupported(array) {
            var p, s, fake = document.createElement('div'), list = array;
            for (p in list) {
                s = list[p];
                if (typeof fake.style[s] !== 'undefined') {
                    fake = null;
                    return [s, p];
                }
            }
            return [false];
        }

        /**
         * Checks for CSS transition support.
         * @private
         * @todo Realy bad design
         * @returns {Number}
         */
        function isTransition() {
            return isStyleSupported(['transition', 'WebkitTransition', 'MozTransition', 'OTransition'])[1];
        }

        /**
         * Checks for CSS transform support.
         * @private
         * @returns {String} The supported property name or false.
         */
        function isTransform() {
            return isStyleSupported(['transform', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform'])[0];
        }

        /**
         * Checks for CSS perspective support.
         * @private
         * @returns {String} The supported property name or false.
         */
        function isPerspective() {
            return isStyleSupported(['perspective', 'webkitPerspective', 'MozPerspective', 'OPerspective', 'MsPerspective'])[0];
        }

        /**
         * Checks wether touch is supported or not.
         * @private
         * @returns {Boolean}
         */
        function isTouchSupport() {
            return 'ontouchstart' in window || !!(navigator.msMaxTouchPoints);
        }

        /**
         * Checks wether touch is supported or not for IE.
         * @private
         * @returns {Boolean}
         */
        function isTouchSupportIE() {
            return window.navigator.msPointerEnabled;
        }

        /**
         * The jQuery Plugin for the Owl Carousel
         * @public
         */
        $.fn.owlCarousel = function (options) {
            return this.each(function () {
                if (!$(this).data('owlCarousel')) {
                    $(this).data('owlCarousel', new Owl(this, options));
                }
            });
        };

        /**
         * The constructor for the jQuery Plugin
         * @public
         */
        $.fn.owlCarousel.Constructor = Owl;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Lazy Plugin
     * @version 2.0.0
     * @author Bartosz Wojciechowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {

        /**
         * Creates the lazy plugin.
         * @class The Lazy Plugin
         * @param {Owl} carousel - The Owl Carousel
         */
        var Lazy = function (carousel) {

            /**
             * Reference to the core.
             * @protected
             * @type {Owl}
             */
            this._core = carousel;

            /**
             * Already loaded items.
             * @protected
             * @type {Array.<jQuery>}
             */
            this._loaded = [];

            /**
             * Event handlers.
             * @protected
             * @type {Object}
             */
            this._handlers = {
                'initialized.owl.carousel change.owl.carousel': $.proxy(function (e) {
                    if (!e.namespace) {
                        return;
                    }

                    if (!this._core.settings || !this._core.settings.lazyLoad) {
                        return;
                    }

                    if ((e.property && e.property.name == 'position') || e.type == 'initialized') {
                        var settings = this._core.settings,
                            n = (settings.center && Math.ceil(settings.items / 2) || settings.items),
                            i = ((settings.center && n * -1) || 0),
                            position = ((e.property && e.property.value) || this._core.current()) + i,
                            clones = this._core.clones().length,
                            load = $.proxy(function (i, v) {
                                this.load(v)
                            }, this);

                        while (i++ < n) {
                            this.load(clones / 2 + this._core.relative(position));
                            clones && $.each(this._core.clones(this._core.relative(position++)), load);
                        }
                    }
                }, this)
            };

            // set the default options
            this._core.options = $.extend({}, Lazy.Defaults, this._core.options);

            // register event handler
            this._core.$element.on(this._handlers);
        }

        /**
         * Default options.
         * @public
         */
        Lazy.Defaults = {
            lazyLoad: false
        }

        /**
         * Loads all resources of an item at the specified position.
         * @param {Number} position - The absolute position of the item.
         * @protected
         */
        Lazy.prototype.load = function (position) {
            var $item = this._core.$stage.children().eq(position),
                $elements = $item && $item.find('.owl-lazy');

            if (!$elements || $.inArray($item.get(0), this._loaded) > -1) {
                return;
            }

            $elements.each($.proxy(function (index, element) {
                var $element = $(element), image,
                    url = (window.devicePixelRatio > 1 && $element.attr('data-src-retina')) || $element.attr('data-src');

                this._core.trigger('load', {element: $element, url: url}, 'lazy');

                if ($element.is('img')) {
                    $element.one('load.owl.lazy', $.proxy(function () {
                        $element.css('opacity', 1);
                        this._core.trigger('loaded', {element: $element, url: url}, 'lazy');
                    }, this)).attr('src', url);
                } else {
                    image = new Image();
                    image.onload = $.proxy(function () {
                        $element.css({
                            'background-image': 'url(' + url + ')',
                            'opacity': '1'
                        });
                        this._core.trigger('loaded', {element: $element, url: url}, 'lazy');
                    }, this);
                    image.src = url;
                }
            }, this));

            this._loaded.push($item.get(0));
        }

        /**
         * Destroys the plugin.
         * @public
         */
        Lazy.prototype.destroy = function () {
            var handler, property;

            for (handler in this.handlers) {
                this._core.$element.off(handler, this.handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        }

        $.fn.owlCarousel.Constructor.Plugins.Lazy = Lazy;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * AutoHeight Plugin
     * @version 2.0.0
     * @author Bartosz Wojciechowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {

        /**
         * Creates the auto height plugin.
         * @class The Auto Height Plugin
         * @param {Owl} carousel - The Owl Carousel
         */
        var AutoHeight = function (carousel) {
            /**
             * Reference to the core.
             * @protected
             * @type {Owl}
             */
            this._core = carousel;

            /**
             * All event handlers.
             * @protected
             * @type {Object}
             */
            this._handlers = {
                'initialized.owl.carousel': $.proxy(function () {
                    if (this._core.settings.autoHeight) {
                        this.update();
                    }
                }, this),
                'changed.owl.carousel': $.proxy(function (e) {
                    if (this._core.settings.autoHeight && e.property.name == 'position') {
                        this.update();
                    }
                }, this),
                'loaded.owl.lazy': $.proxy(function (e) {
                    if (this._core.settings.autoHeight && e.element.closest('.' + this._core.settings.itemClass)
                        === this._core.$stage.children().eq(this._core.current())) {
                        this.update();
                    }
                }, this)
            };

            // set default options
            this._core.options = $.extend({}, AutoHeight.Defaults, this._core.options);

            // register event handlers
            this._core.$element.on(this._handlers);
        };

        /**
         * Default options.
         * @public
         */
        AutoHeight.Defaults = {
            autoHeight: false,
            autoHeightClass: 'owl-height'
        };

        /**
         * Updates the view.
         */
        AutoHeight.prototype.update = function () {
            this._core.$stage.parent()
                .height(this._core.$stage.children().eq(this._core.current()).height())
                .addClass(this._core.settings.autoHeightClass);
        };

        AutoHeight.prototype.destroy = function () {
            var handler, property;

            for (handler in this._handlers) {
                this._core.$element.off(handler, this._handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        };

        $.fn.owlCarousel.Constructor.Plugins.AutoHeight = AutoHeight;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Video Plugin
     * @version 2.0.0
     * @author Bartosz Wojciechowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {

        /**
         * Creates the video plugin.
         * @class The Video Plugin
         * @param {Owl} carousel - The Owl Carousel
         */
        var Video = function (carousel) {
            /**
             * Reference to the core.
             * @protected
             * @type {Owl}
             */
            this._core = carousel;

            /**
             * Cache all video URLs.
             * @protected
             * @type {Object}
             */
            this._videos = {};

            /**
             * Current playing item.
             * @protected
             * @type {jQuery}
             */
            this._playing = null;

            /**
             * Whether this is in fullscreen or not.
             * @protected
             * @type {Boolean}
             */
            this._fullscreen = false;

            /**
             * All event handlers.
             * @protected
             * @type {Object}
             */
            this._handlers = {
                'resize.owl.carousel': $.proxy(function (e) {
                    if (this._core.settings.video && !this.isInFullScreen()) {
                        e.preventDefault();
                    }
                }, this),
                'refresh.owl.carousel changed.owl.carousel': $.proxy(function (e) {
                    if (this._playing) {
                        this.stop();
                    }
                }, this),
                'prepared.owl.carousel': $.proxy(function (e) {
                    var $element = $(e.content).find('.owl-video');
                    if ($element.length) {
                        $element.css('display', 'none');
                        this.fetch($element, $(e.content));
                    }
                }, this)
            };

            // set default options
            this._core.options = $.extend({}, Video.Defaults, this._core.options);

            // register event handlers
            this._core.$element.on(this._handlers);

            this._core.$element.on('click.owl.video', '.owl-video-play-icon', $.proxy(function (e) {
                this.play(e);
            }, this));
        };

        /**
         * Default options.
         * @public
         */
        Video.Defaults = {
            video: false,
            videoHeight: false,
            videoWidth: false
        };

        /**
         * Gets the video ID and the type (YouTube/Vimeo only).
         * @protected
         * @param {jQuery} target - The target containing the video data.
         * @param {jQuery} item - The item containing the video.
         */
        Video.prototype.fetch = function (target, item) {

            var type = target.attr('data-vimeo-id') ? 'vimeo' : 'youtube',
                id = target.attr('data-vimeo-id') || target.attr('data-youtube-id'),
                width = target.attr('data-width') || this._core.settings.videoWidth,
                height = target.attr('data-height') || this._core.settings.videoHeight,
                url = target.attr('href');

            if (url) {
                id = url.match(/(http:|https:|)\/\/(player.|www.)?(vimeo\.com|youtu(be\.com|\.be|be\.googleapis\.com))\/(video\/|embed\/|watch\?v=|v\/)?([A-Za-z0-9._%-]*)(\&\S+)?/);

                if (id[3].indexOf('youtu') > -1) {
                    type = 'youtube';
                } else if (id[3].indexOf('vimeo') > -1) {
                    type = 'vimeo';
                } else {
                    throw new Error('Video URL not supported.');
                }
                id = id[6];
            } else {
                throw new Error('Missing video URL.');
            }

            this._videos[url] = {
                type: type,
                id: id,
                width: width,
                height: height
            };

            item.attr('data-video', url);

            this.thumbnail(target, this._videos[url]);
        };

        /**
         * Creates video thumbnail.
         * @protected
         * @param {jQuery} target - The target containing the video data.
         * @param {Object} info - The video info object.
         * @see `fetch`
         */
        Video.prototype.thumbnail = function (target, video) {

            var tnLink,
                icon,
                path,
                dimensions = video.width && video.height ? 'style="width:' + video.width + 'px;height:' + video.height + 'px;"' : '',
                customTn = target.find('img'),
                srcType = 'src',
                lazyClass = '',
                settings = this._core.settings,
                create = function (path) {
                    icon = '<div class="owl-video-play-icon"></div>';

                    if (settings.lazyLoad) {
                        tnLink = '<div class="owl-video-tn ' + lazyClass + '" ' + srcType + '="' + path + '"></div>';
                    } else {
                        tnLink = '<div class="owl-video-tn" style="opacity:1;background-image:url(' + path + ')"></div>';
                    }
                    target.after(tnLink);
                    target.after(icon);
                };

            // wrap video content into owl-video-wrapper div
            target.wrap('<div class="owl-video-wrapper"' + dimensions + '></div>');

            if (this._core.settings.lazyLoad) {
                srcType = 'data-src';
                lazyClass = 'owl-lazy';
            }

            // custom thumbnail
            if (customTn.length) {
                create(customTn.attr(srcType));
                customTn.remove();
                return false;
            }

            if (video.type === 'youtube') {
                path = "http://img.youtube.com/vi/" + video.id + "/hqdefault.jpg";
                create(path);
            } else if (video.type === 'vimeo') {
                $.ajax({
                    type: 'GET',
                    url: 'http://vimeo.com/api/v2/video/' + video.id + '.json',
                    jsonp: 'callback',
                    dataType: 'jsonp',
                    success: function (data) {
                        path = data[0].thumbnail_large;
                        create(path);
                    }
                });
            }
        };

        /**
         * Stops the current video.
         * @public
         */
        Video.prototype.stop = function () {
            this._core.trigger('stop', null, 'video');
            this._playing.find('.owl-video-frame').remove();
            this._playing.removeClass('owl-video-playing');
            this._playing = null;
        };

        /**
         * Starts the current video.
         * @public
         * @param {Event} ev - The event arguments.
         */
        Video.prototype.play = function (ev) {
            this._core.trigger('play', null, 'video');

            if (this._playing) {
                this.stop();
            }

            var target = $(ev.target || ev.srcElement),
                item = target.closest('.' + this._core.settings.itemClass),
                video = this._videos[item.attr('data-video')],
                width = video.width || '100%',
                height = video.height || this._core.$stage.height(),
                html, wrap;

            if (video.type === 'youtube') {
                html = '<iframe width="' + width + '" height="' + height + '" src="http://www.youtube.com/embed/'
                    + video.id + '?autoplay=1&v=' + video.id + '" frameborder="0" allowfullscreen></iframe>';
            } else if (video.type === 'vimeo') {
                html = '<iframe src="http://player.vimeo.com/video/' + video.id + '?autoplay=1" width="' + width
                    + '" height="' + height
                    + '" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>';
            }

            item.addClass('owl-video-playing');
            this._playing = item;

            wrap = $('<div style="height:' + height + 'px; width:' + width + 'px" class="owl-video-frame">'
                + html + '</div>');
            target.after(wrap);
        };

        /**
         * Checks whether an video is currently in full screen mode or not.
         * @todo Bad style because looks like a readonly method but changes members.
         * @protected
         * @returns {Boolean}
         */
        Video.prototype.isInFullScreen = function () {

            // if Vimeo Fullscreen mode
            var element = document.fullscreenElement || document.mozFullScreenElement
                || document.webkitFullscreenElement;

            if (element && $(element).parent().hasClass('owl-video-frame')) {
                this._core.speed(0);
                this._fullscreen = true;
            }

            if (element && this._fullscreen && this._playing) {
                return false;
            }

            // comming back from fullscreen
            if (this._fullscreen) {
                this._fullscreen = false;
                return false;
            }

            // check full screen mode and window orientation
            if (this._playing) {
                if (this._core.state.orientation !== window.orientation) {
                    this._core.state.orientation = window.orientation;
                    return false;
                }
            }

            return true;
        };

        /**
         * Destroys the plugin.
         */
        Video.prototype.destroy = function () {
            var handler, property;

            this._core.$element.off('click.owl.video');

            for (handler in this._handlers) {
                this._core.$element.off(handler, this._handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        };

        $.fn.owlCarousel.Constructor.Plugins.Video = Video;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Animate Plugin
     * @version 2.0.0
     * @author Bartosz Wojciechowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {

        /**
         * Creates the animate plugin.
         * @class The Navigation Plugin
         * @param {Owl} scope - The Owl Carousel
         */
        var Animate = function (scope) {
            this.core = scope;
            this.core.options = $.extend({}, Animate.Defaults, this.core.options);
            this.swapping = true;
            this.previous = undefined;
            this.next = undefined;

            this.handlers = {
                'change.owl.carousel': $.proxy(function (e) {
                    if (e.property.name == 'position') {
                        this.previous = this.core.current();
                        this.next = e.property.value;
                    }
                }, this),
                'drag.owl.carousel dragged.owl.carousel translated.owl.carousel': $.proxy(function (e) {
                    this.swapping = e.type == 'translated';
                }, this),
                'translate.owl.carousel': $.proxy(function (e) {
                    if (this.swapping && (this.core.options.animateOut || this.core.options.animateIn)) {
                        this.swap();
                    }
                }, this)
            };

            this.core.$element.on(this.handlers);
        };

        /**
         * Default options.
         * @public
         */
        Animate.Defaults = {
            animateOut: false,
            animateIn: false
        };

        /**
         * Toggles the animation classes whenever an translations starts.
         * @protected
         * @returns {Boolean|undefined}
         */
        Animate.prototype.swap = function () {

            if (this.core.settings.items !== 1 || !this.core.support3d) {
                return;
            }

            this.core.speed(0);

            var left,
                clear = $.proxy(this.clear, this),
                previous = this.core.$stage.children().eq(this.previous),
                next = this.core.$stage.children().eq(this.next),
                incoming = this.core.settings.animateIn,
                outgoing = this.core.settings.animateOut;

            if (this.core.current() === this.previous) {
                return;
            }

            if (outgoing) {
                left = this.core.coordinates(this.previous) - this.core.coordinates(this.next);
                previous.css({'left': left + 'px'})
                    .addClass('animated owl-animated-out')
                    .addClass(outgoing)
                    .one('webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend', clear);
            }

            if (incoming) {
                next.addClass('animated owl-animated-in')
                    .addClass(incoming)
                    .one('webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend', clear);
            }
        };

        Animate.prototype.clear = function (e) {
            $(e.target).css({'left': ''})
                .removeClass('animated owl-animated-out owl-animated-in')
                .removeClass(this.core.settings.animateIn)
                .removeClass(this.core.settings.animateOut);
            this.core.transitionEnd();
        }

        /**
         * Destroys the plugin.
         * @public
         */
        Animate.prototype.destroy = function () {
            var handler, property;

            for (handler in this.handlers) {
                this.core.$element.off(handler, this.handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        };

        $.fn.owlCarousel.Constructor.Plugins.Animate = Animate;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Autoplay Plugin
     * @version 2.0.0
     * @author Bartosz Wojciechowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {

        /**
         * Creates the autoplay plugin.
         * @class The Autoplay Plugin
         * @param {Owl} scope - The Owl Carousel
         */
        var Autoplay = function (scope) {
            this.core = scope;
            this.core.options = $.extend({}, Autoplay.Defaults, this.core.options);

            this.handlers = {
                'translated.owl.carousel refreshed.owl.carousel': $.proxy(function () {
                    this.autoplay();
                }, this),
                'play.owl.autoplay': $.proxy(function (e, t, s) {
                    this.play(t, s);
                }, this),
                'stop.owl.autoplay': $.proxy(function () {
                    this.stop();
                }, this),
                'mouseover.owl.autoplay': $.proxy(function () {
                    if (this.core.settings.autoplayHoverPause) {
                        this.pause();
                    }
                }, this),
                'mouseleave.owl.autoplay': $.proxy(function () {
                    if (this.core.settings.autoplayHoverPause) {
                        this.autoplay();
                    }
                }, this)
            };

            this.core.$element.on(this.handlers);
        };

        /**
         * Default options.
         * @public
         */
        Autoplay.Defaults = {
            autoplay: false,
            autoplayTimeout: 5000,
            autoplayHoverPause: false,
            autoplaySpeed: false
        };

        /**
         * @protected
         * @todo Must be documented.
         */
        Autoplay.prototype.autoplay = function () {
            if (this.core.settings.autoplay && !this.core.state.videoPlay) {
                window.clearInterval(this.interval);

                this.interval = window.setInterval($.proxy(function () {
                    this.play();
                }, this), this.core.settings.autoplayTimeout);
            } else {
                window.clearInterval(this.interval);
            }
        };

        /**
         * Starts the autoplay.
         * @public
         * @param {Number} [timeout] - ...
         * @param {Number} [speed] - ...
         * @returns {Boolean|undefined} - ...
         * @todo Must be documented.
         */
        Autoplay.prototype.play = function (timeout, speed) {
            // if tab is inactive - doesnt work in <IE10
            if (document.hidden === true) {
                return;
            }

            if (this.core.state.isTouch || this.core.state.isScrolling
                || this.core.state.isSwiping || this.core.state.inMotion) {
                return;
            }

            if (this.core.settings.autoplay === false) {
                window.clearInterval(this.interval);
                return;
            }

            this.core.next(this.core.settings.autoplaySpeed);
        };

        /**
         * Stops the autoplay.
         * @public
         */
        Autoplay.prototype.stop = function () {
            window.clearInterval(this.interval);
        };

        /**
         * Pauses the autoplay.
         * @public
         */
        Autoplay.prototype.pause = function () {
            window.clearInterval(this.interval);
        };

        /**
         * Destroys the plugin.
         */
        Autoplay.prototype.destroy = function () {
            var handler, property;

            window.clearInterval(this.interval);

            for (handler in this.handlers) {
                this.core.$element.off(handler, this.handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        };

        $.fn.owlCarousel.Constructor.Plugins.autoplay = Autoplay;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Navigation Plugin
     * @version 2.0.0
     * @author Artus Kolanowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {
        'use strict';

        /**
         * Creates the navigation plugin.
         * @class The Navigation Plugin
         * @param {Owl} carousel - The Owl Carousel.
         */
        var Navigation = function (carousel) {
            /**
             * Reference to the core.
             * @protected
             * @type {Owl}
             */
            this._core = carousel;

            /**
             * Indicates whether the plugin is initialized or not.
             * @protected
             * @type {Boolean}
             */
            this._initialized = false;

            /**
             * The current paging indexes.
             * @protected
             * @type {Array}
             */
            this._pages = [];

            /**
             * All DOM elements of the user interface.
             * @protected
             * @type {Object}
             */
            this._controls = {};

            /**
             * Markup for an indicator.
             * @protected
             * @type {Array.<String>}
             */
            this._templates = [];

            /**
             * The carousel element.
             * @type {jQuery}
             */
            this.$element = this._core.$element;

            /**
             * Overridden methods of the carousel.
             * @protected
             * @type {Object}
             */
            this._overrides = {
                next: this._core.next,
                prev: this._core.prev,
                to: this._core.to
            };

            /**
             * All event handlers.
             * @protected
             * @type {Object}
             */
            this._handlers = {
                'prepared.owl.carousel': $.proxy(function (e) {
                    if (this._core.settings.dotsData) {
                        this._templates.push($(e.content).find('[data-dot]').andSelf('[data-dot]').attr('data-dot'));
                    }
                }, this),
                'add.owl.carousel': $.proxy(function (e) {
                    if (this._core.settings.dotsData) {
                        this._templates.splice(e.position, 0, $(e.content).find('[data-dot]').andSelf('[data-dot]').attr('data-dot'));
                    }
                }, this),
                'remove.owl.carousel prepared.owl.carousel': $.proxy(function (e) {
                    if (this._core.settings.dotsData) {
                        this._templates.splice(e.position, 1);
                    }
                }, this),
                'change.owl.carousel': $.proxy(function (e) {
                    if (e.property.name == 'position') {
                        if (!this._core.state.revert && !this._core.settings.loop && this._core.settings.navRewind) {
                            var current = this._core.current(),
                                maximum = this._core.maximum(),
                                minimum = this._core.minimum();
                            e.data = e.property.value > maximum
                                ? current >= maximum ? minimum : maximum
                                : e.property.value < minimum ? maximum : e.property.value;
                        }
                    }
                }, this),
                'changed.owl.carousel': $.proxy(function (e) {
                    if (e.property.name == 'position') {
                        this.draw();
                    }
                }, this),
                'refreshed.owl.carousel': $.proxy(function () {
                    if (!this._initialized) {
                        this.initialize();
                        this._initialized = true;
                    }
                    this._core.trigger('refresh', null, 'navigation');
                    this.update();
                    this.draw();
                    this._core.trigger('refreshed', null, 'navigation');
                }, this)
            };

            // set default options
            this._core.options = $.extend({}, Navigation.Defaults, this._core.options);

            // register event handlers
            this.$element.on(this._handlers);
        }

        /**
         * Default options.
         * @public
         * @todo Rename `slideBy` to `navBy`
         */
        Navigation.Defaults = {
            nav: false,
            navRewind: true,
            navText: ['prev', 'next'],
            navSpeed: false,
            navElement: 'div',
            navContainer: false,
            navContainerClass: 'owl-nav',
            navClass: ['owl-prev', 'owl-next'],
            slideBy: 1,
            dotClass: 'owl-dot',
            dotsClass: 'owl-dots',
            dots: true,
            dotsEach: false,
            dotData: false,
            dotsSpeed: false,
            dotsContainer: false,
            controlsClass: 'owl-controls'
        }

        /**
         * Initializes the layout of the plugin and extends the carousel.
         * @protected
         */
        Navigation.prototype.initialize = function () {
            var $container, override,
                options = this._core.settings;

            // create the indicator template
            if (!options.dotsData) {
                this._templates = [$('<div>')
                    .addClass(options.dotClass)
                    .append($('<span>'))
                    .prop('outerHTML')];
            }

            // create controls container if needed
            if (!options.navContainer || !options.dotsContainer) {
                this._controls.$container = $('<div>')
                    .addClass(options.controlsClass)
                    .appendTo(this.$element);
            }

            // create DOM structure for absolute navigation
            this._controls.$indicators = options.dotsContainer ? $(options.dotsContainer)
                : $('<div>').hide().addClass(options.dotsClass).appendTo(this._controls.$container);

            this._controls.$indicators.on('click', 'div', $.proxy(function (e) {
                var index = $(e.target).parent().is(this._controls.$indicators)
                    ? $(e.target).index() : $(e.target).parent().index();

                e.preventDefault();

                this.to(index, options.dotsSpeed);
            }, this));

            // create DOM structure for relative navigation
            $container = options.navContainer ? $(options.navContainer)
                : $('<div>').addClass(options.navContainerClass).prependTo(this._controls.$container);

            this._controls.$next = $('<' + options.navElement + '>');
            this._controls.$previous = this._controls.$next.clone();

            this._controls.$previous
                .addClass(options.navClass[0])
                .html(options.navText[0])
                .hide()
                .prependTo($container)
                .on('click', $.proxy(function (e) {
                    this.prev(options.navSpeed);
                }, this));
            this._controls.$next
                .addClass(options.navClass[1])
                .html(options.navText[1])
                .hide()
                .appendTo($container)
                .on('click', $.proxy(function (e) {
                    this.next(options.navSpeed);
                }, this));

            // override public methods of the carousel
            for (override in this._overrides) {
                this._core[override] = $.proxy(this[override], this);
            }
        }

        /**
         * Destroys the plugin.
         * @protected
         */
        Navigation.prototype.destroy = function () {
            var handler, control, property, override;

            for (handler in this._handlers) {
                this.$element.off(handler, this._handlers[handler]);
            }
            for (control in this._controls) {
                this._controls[control].remove();
            }
            for (override in this.overides) {
                this._core[override] = this._overrides[override];
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        }

        /**
         * Updates the internal state.
         * @protected
         */
        Navigation.prototype.update = function () {
            var i, j, k,
                options = this._core.settings,
                lower = this._core.clones().length / 2,
                upper = lower + this._core.items().length,
                size = options.center || options.autoWidth || options.dotData
                    ? 1 : options.dotsEach || options.items;

            if (options.slideBy !== 'page') {
                options.slideBy = Math.min(options.slideBy, options.items);
            }

            if (options.dots || options.slideBy == 'page') {
                this._pages = [];

                for (i = lower, j = 0, k = 0; i < upper; i++) {
                    if (j >= size || j === 0) {
                        this._pages.push({
                            start: i - lower,
                            end: i - lower + size - 1
                        });
                        j = 0, ++k;
                    }
                    j += this._core.mergers(this._core.relative(i));
                }
            }
        }

        /**
         * Draws the user interface.
         * @todo The option `dotData` wont work.
         * @protected
         */
        Navigation.prototype.draw = function () {
            var difference, i, html = '',
                options = this._core.settings,
                $items = this._core.$stage.children(),
                index = this._core.relative(this._core.current());

            if (options.nav && !options.loop && !options.navRewind) {
                this._controls.$previous.toggleClass('disabled', index <= 0);
                this._controls.$next.toggleClass('disabled', index >= this._core.maximum());
            }

            this._controls.$previous.toggle(options.nav);
            this._controls.$next.toggle(options.nav);

            if (options.dots) {
                difference = this._pages.length - this._controls.$indicators.children().length;

                if (options.dotData && difference !== 0) {
                    for (i = 0; i < this._controls.$indicators.children().length; i++) {
                        html += this._templates[this._core.relative(i)];
                    }
                    this._controls.$indicators.html(html);
                } else if (difference > 0) {
                    html = new Array(difference + 1).join(this._templates[0]);
                    this._controls.$indicators.append(html);
                } else if (difference < 0) {
                    this._controls.$indicators.children().slice(difference).remove();
                }

                this._controls.$indicators.find('.active').removeClass('active');
                this._controls.$indicators.children().eq($.inArray(this.current(), this._pages)).addClass('active');
            }

            this._controls.$indicators.toggle(options.dots);
        }

        /**
         * Extends event data.
         * @protected
         * @param {Event} event - The event object which gets thrown.
         */
        Navigation.prototype.onTrigger = function (event) {
            var settings = this._core.settings;

            event.page = {
                index: $.inArray(this.current(), this._pages),
                count: this._pages.length,
                size: settings && (settings.center || settings.autoWidth || settings.dotData
                    ? 1 : settings.dotsEach || settings.items)
            };
        }

        /**
         * Gets the current page position of the carousel.
         * @protected
         * @returns {Number}
         */
        Navigation.prototype.current = function () {
            var index = this._core.relative(this._core.current());
            return $.grep(this._pages, function (o) {
                return o.start <= index && o.end >= index;
            }).pop();
        }

        /**
         * Gets the current succesor/predecessor position.
         * @protected
         * @returns {Number}
         */
        Navigation.prototype.getPosition = function (successor) {
            var position, length,
                options = this._core.settings;

            if (options.slideBy == 'page') {
                position = $.inArray(this.current(), this._pages);
                length = this._pages.length;
                successor ? ++position : --position;
                position = this._pages[((position % length) + length) % length].start;
            } else {
                position = this._core.relative(this._core.current());
                length = this._core.items().length;
                successor ? position += options.slideBy : position -= options.slideBy;
            }
            return position;
        }

        /**
         * Slides to the next item or page.
         * @public
         * @param {Number} [speed=false] - The time in milliseconds for the transition.
         */
        Navigation.prototype.next = function (speed) {
            $.proxy(this._overrides.to, this._core)(this.getPosition(true), speed);
        }

        /**
         * Slides to the previous item or page.
         * @public
         * @param {Number} [speed=false] - The time in milliseconds for the transition.
         */
        Navigation.prototype.prev = function (speed) {
            $.proxy(this._overrides.to, this._core)(this.getPosition(false), speed);
        }

        /**
         * Slides to the specified item or page.
         * @public
         * @param {Number} position - The position of the item or page.
         * @param {Number} [speed] - The time in milliseconds for the transition.
         * @param {Boolean} [standard=false] - Whether to use the standard behaviour or not.
         */
        Navigation.prototype.to = function (position, speed, standard) {
            var length;

            if (!standard) {
                length = this._pages.length;
                $.proxy(this._overrides.to, this._core)(this._pages[((position % length) + length) % length].start, speed);
            } else {
                $.proxy(this._overrides.to, this._core)(position, speed);
            }
        }

        $.fn.owlCarousel.Constructor.Plugins.Navigation = Navigation;

    })(window.Zepto || window.jQuery, window, document);

    /**
     * Hash Plugin
     * @version 2.0.0
     * @author Artus Kolanowski
     * @license The MIT License (MIT)
     */
    ;
    (function ($, window, document, undefined) {
        'use strict';

        /**
         * Creates the hash plugin.
         * @class The Hash Plugin
         * @param {Owl} carousel - The Owl Carousel
         */
        var Hash = function (carousel) {
            /**
             * Reference to the core.
             * @protected
             * @type {Owl}
             */
            this._core = carousel;

            /**
             * Hash table for the hashes.
             * @protected
             * @type {Object}
             */
            this._hashes = {};

            /**
             * The carousel element.
             * @type {jQuery}
             */
            this.$element = this._core.$element;

            /**
             * All event handlers.
             * @protected
             * @type {Object}
             */
            this._handlers = {
                'initialized.owl.carousel': $.proxy(function () {
                    if (this._core.settings.startPosition == 'URLHash') {
                        $(window).trigger('hashchange.owl.navigation');
                    }
                }, this),
                'prepared.owl.carousel': $.proxy(function (e) {
                    var hash = $(e.content).find('[data-hash]').andSelf('[data-hash]').attr('data-hash');
                    this._hashes[hash] = e.content;
                }, this)
            };

            // set default options
            this._core.options = $.extend({}, Hash.Defaults, this._core.options);

            // register the event handlers
            this.$element.on(this._handlers);

            // register event listener for hash navigation
            $(window).on('hashchange.owl.navigation', $.proxy(function () {
                var hash = window.location.hash.substring(1),
                    items = this._core.$stage.children(),
                    position = this._hashes[hash] && items.index(this._hashes[hash]) || 0;

                if (!hash) {
                    return false;
                }

                this._core.to(position, false, true);
            }, this));
        }

        /**
         * Default options.
         * @public
         */
        Hash.Defaults = {
            URLhashListener: false
        }

        /**
         * Destroys the plugin.
         * @public
         */
        Hash.prototype.destroy = function () {
            var handler, property;

            $(window).off('hashchange.owl.navigation');

            for (handler in this._handlers) {
                this._core.$element.off(handler, this._handlers[handler]);
            }
            for (property in Object.getOwnPropertyNames(this)) {
                typeof this[property] != 'function' && (this[property] = null);
            }
        }

        $.fn.owlCarousel.Constructor.Plugins.Hash = Hash;

    })(window.Zepto || window.jQuery, window, document);
});