;(function (window, document, $, undefined) {
    'use strict';

    // If there's no jQuery, fancyBox can't work
    // =========================================

    if ( !$ ) {
        return;
    }

    // Check if fancyBox is already initialized
    // ========================================

    if ( $.fn.fancybox ) {

        $.error('fancyBox already initialized');

        return;
    }

    // Private default settings
    // ========================

    var defaults = {

        // Enable infinite gallery navigation
        loop : false,

        // Space around image, ignored if zoomed-in or viewport smaller than 800px
        margin : [44, 0],

        // Horizontal space between slides
        gutter : 50,

        // Enable keyboard navigation
        keyboard : true,

        // Should display navigation arrows at the screen edges
        arrows : true,

        // Should display infobar (counter and arrows at the top)
        infobar : false,

        // Should display toolbar (buttons at the top)
        toolbar : true,

        // What buttons should appear in the top right corner.
        // Buttons will be created using templates from `btnTpl` option
        // and they will be placed into toolbar (class="fancybox-toolbar"` element)
        buttons : [
            'slideShow',
            'fullScreen',
            'thumbs',
            'close'
        ],

        // Detect "idle" time in seconds
        idleTime : 4,

        // Should display buttons at top right corner of the content
        // If 'auto' - they will be created for content having type 'html', 'inline' or 'ajax'
        // Use template from `btnTpl.smallBtn` for customization
        smallBtn : 'auto',

        // Disable right-click and use simple image protection for images
        protect : false,

        // Shortcut to make content "modal" - disable keyboard navigtion, hide buttons, etc
        modal : false,

        image : {

            // Wait for images to load before displaying
            // Requires predefined image dimensions
            // If 'auto' - will zoom in thumbnail if 'width' and 'height' attributes are found
            preload : "auto",

        },

        ajax : {

            // Object containing settings for ajax request
            settings : {

                // This helps to indicate that request comes from the modal
                // Feel free to change naming
                data : {
                    fancybox : true
                }
            }

        },

        iframe : {

            // Iframe template
            tpl : '<iframe id="fancybox-frame{rnd}" name="fancybox-frame{rnd}" class="fancybox-iframe" frameborder="0" vspace="0" hspace="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen allowtransparency="true" src=""></iframe>',

            // Preload iframe before displaying it
            // This allows to calculate iframe content width and height
            // (note: Due to "Same Origin Policy", you can't get cross domain data).
            preload : true,

            // Custom CSS styling for iframe wrapping element
            // You can use this to set custom iframe dimensions
            css : {},

            // Iframe tag attributes
            attr : {
                scrolling : 'auto'
            }

        },

        // Open/close animation type
        // Possible values:
        //   false            - disable
        //   "zoom"           - zoom images from/to thumbnail
        //   "fade"
        //   "zoom-in-out"
        //
        animationEffect : "zoom",

        // Duration in ms for open/close animation
        animationDuration : 366,

        // Should image change opacity while zooming
        // If opacity is 'auto', then opacity will be changed if image and thumbnail have different aspect ratios
        zoomOpacity : 'auto',

        // Transition effect between slides
        //
        // Possible values:
        //   false            - disable
        //   "fade'
        //   "slide'
        //   "circular'
        //   "tube'
        //   "zoom-in-out'
        //   "rotate'
        //
        transitionEffect : "fade",

        // Duration in ms for transition animation
        transitionDuration : 366,

        // Custom CSS class for slide element
        slideClass : '',

        // Custom CSS class for layout
        baseClass : '',

        // Base template for layout
        baseTpl	:
            '<div class="fancybox-container" role="dialog" tabindex="-1">' +
                '<div class="fancybox-bg"></div>' +
                '<div class="fancybox-inner">' +
                    '<div class="fancybox-infobar">' +
                        '<button data-fancybox-prev title="{{PREV}}" class="fancybox-button fancybox-button--left"></button>' +
                        '<div class="fancybox-infobar__body">' +
                            '<span data-fancybox-index></span>&nbsp;/&nbsp;<span data-fancybox-count></span>' +
                        '</div>' +
                        '<button data-fancybox-next title="{{NEXT}}" class="fancybox-button fancybox-button--right"></button>' +
                    '</div>' +
                    '<div class="fancybox-toolbar">' +
                        '{{BUTTONS}}' +
                    '</div>' +
                    '<div class="fancybox-navigation">' +
                        '<button data-fancybox-prev title="{{PREV}}" class="fancybox-arrow fancybox-arrow--left" />' +
                        '<button data-fancybox-next title="{{NEXT}}" class="fancybox-arrow fancybox-arrow--right" />' +
                    '</div>' +
                    '<div class="fancybox-stage"></div>' +
                    '<div class="fancybox-caption-wrap">' +
                        '<div class="fancybox-caption"></div>' +
                    '</div>' +
                '</div>' +
            '</div>',

        // Loading indicator template
        spinnerTpl : '<div class="fancybox-loading"></div>',

        // Error message template
        errorTpl : '<div class="fancybox-error"><p>{{ERROR}}<p></div>',

        btnTpl : {
            slideShow  : '<button data-fancybox-play class="fancybox-button fancybox-button--play" title="{{PLAY_START}}"></button>',
            fullScreen : '<button data-fancybox-fullscreen class="fancybox-button fancybox-button--fullscreen" title="{{FULL_SCREEN}}"></button>',
            thumbs     : '<button data-fancybox-thumbs class="fancybox-button fancybox-button--thumbs" title="{{THUMBS}}"></button>',
            close      : '<button data-fancybox-close class="fancybox-button fancybox-button--close" title="{{CLOSE}}"></button>',

            // This small close button will be appended to your html/inline/ajax content by default,
            // if "smallBtn" option is not set to false
            smallBtn   : '<button data-fancybox-close class="fancybox-close-small" title="{{CLOSE}}"></button>'
        },

        // Container is injected into this element
        parentEl : 'body',


        // Focus handling
        // ==============

        // Try to focus on the first focusable element after opening
        autoFocus : true,

        // Put focus back to active element after closing
        backFocus : true,

        // Do not let user to focus on element outside modal content
        trapFocus : true,


        // Module specific options
        // =======================

        fullScreen : {
            autoStart : false,
        },

        touch : {
            vertical : true,  // Allow to drag content vertically
            momentum : true   // Continue movement after releasing mouse/touch when panning
        },

        // Hash value when initializing manually,
        // set `false` to disable hash change
        hash : null,

        // Customize or add new media types
        // Example:
        /*
        media : {
            youtube : {
                params : {
                    autoplay : 0
                }
            }
        }
        */
        media : {},

        slideShow : {
            autoStart : false,
            speed     : 4000
        },

        thumbs : {
            autoStart   : false,   // Display thumbnails on opening
            hideOnClose : true     // Hide thumbnail grid when closing animation starts
        },

        // Callbacks
        //==========

        // See Documentation/API/Events for more information
        // Example:
        /*
            afterShow: function( instance, current ) {
                 console.info( 'Clicked element:' );
                 console.info( current.opts.$orig );
            }
        */

        onInit       : $.noop,  // When instance has been initialized

        beforeLoad   : $.noop,  // Before the content of a slide is being loaded
        afterLoad    : $.noop,  // When the content of a slide is done loading

        beforeShow   : $.noop,  // Before open animation starts
        afterShow    : $.noop,  // When content is done loading and animating

        beforeClose  : $.noop,  // Before the instance attempts to close. Return false to cancel the close.
        afterClose   : $.noop,  // After instance has been closed

        onActivate   : $.noop,  // When instance is brought to front
        onDeactivate : $.noop,  // When other instance has been activated


        // Interaction
        // ===========

        // Use options below to customize taken action when user clicks or double clicks on the fancyBox area,
        // each option can be string or method that returns value.
        //
        // Possible values:
        //   "close"           - close instance
        //   "next"            - move to next gallery item
        //   "nextOrClose"     - move to next gallery item or close if gallery has only one item
        //   "toggleControls"  - show/hide controls
        //   "zoom"            - zoom image (if loaded)
        //   false             - do nothing

        // Clicked on the content
        clickContent : function( current, event ) {
            return current.type === 'image' ? 'zoom' : false;
        },

        // Clicked on the slide
        clickSlide : 'close',

        // Clicked on the background (backdrop) element
        clickOutside : 'close',

        // Same as previous two, but for double click
        dblclickContent : false,
        dblclickSlide   : false,
        dblclickOutside : false,


        // Custom options when mobile device is detected
        // =============================================

        mobile : {
            clickContent : function( current, event ) {
                return current.type === 'image' ? 'toggleControls' : false;
            },
            clickSlide : function( current, event ) {
                return current.type === 'image' ? 'toggleControls' : "close";
            },
            dblclickContent : function( current, event ) {
                return current.type === 'image' ? 'zoom' : false;
            },
            dblclickSlide : function( current, event ) {
                return current.type === 'image' ? 'zoom' : false;
            }
        },


        // Internationalization
        // ============

        lang : 'en',
        i18n : {
            'en' : {
                CLOSE       : 'Close',
                NEXT        : 'Next',
                PREV        : 'Previous',
                ERROR       : 'The requested content cannot be loaded. <br/> Please try again later.',
                PLAY_START  : 'Start slideshow',
                PLAY_STOP   : 'Pause slideshow',
                FULL_SCREEN : 'Full screen',
                THUMBS      : 'Thumbnails'
            },
            'de' : {
                CLOSE       : 'Schliessen',
                NEXT        : 'Weiter',
                PREV        : 'Zurück',
                ERROR       : 'Die angeforderten Daten konnten nicht geladen werden. <br/> Bitte versuchen Sie es später nochmal.',
                PLAY_START  : 'Diaschau starten',
                PLAY_STOP   : 'Diaschau beenden',
                FULL_SCREEN : 'Vollbild',
                THUMBS      : 'Vorschaubilder'
            }
        }

    };

    // Few useful variables and methods
    // ================================

    var $W = $(window);
    var $D = $(document);

    var called = 0;


    // Check if an object is a jQuery object and not a native JavaScript object
    // ========================================================================

    var isQuery = function ( obj ) {
        return obj && obj.hasOwnProperty && obj instanceof $;
    };


    // Handle multiple browsers for "requestAnimationFrame" and "cancelAnimationFrame"
    // ===============================================================================

    var requestAFrame = (function () {
        return window.requestAnimationFrame ||
                window.webkitRequestAnimationFrame ||
                window.mozRequestAnimationFrame ||
                window.oRequestAnimationFrame ||
                // if all else fails, use setTimeout
                function (callback) {
                    return window.setTimeout(callback, 1000 / 60);
                };
    })();


    // Detect the supported transition-end event property name
    // =======================================================

    var transitionEnd = (function () {
        var t, el = document.createElement("fakeelement");

        var transitions = {
            "transition"      : "transitionend",
            "OTransition"     : "oTransitionEnd",
            "MozTransition"   : "transitionend",
            "WebkitTransition": "webkitTransitionEnd"
        };

        for (t in transitions) {
            if (el.style[t] !== undefined){
                return transitions[t];
            }
        }
    })();


    // Force redraw on an element.
    // This helps in cases where the browser doesn't redraw an updated element properly.
    // =================================================================================

    var forceRedraw = function( $el ) {
        return ( $el && $el.length && $el[0].offsetHeight );
    };


    // Class definition
    // ================

    var FancyBox = function( content, opts, index ) {
        var self = this;

        self.opts  = $.extend( true, { index : index }, defaults, opts || {} );

        // Exclude buttons option from deep merging
        if ( opts && $.isArray( opts.buttons ) ) {
            self.opts.buttons = opts.buttons;
        }

        self.id    = self.opts.id || ++called;
        self.group = [];

        self.currIndex = parseInt( self.opts.index, 10 ) || 0;
        self.prevIndex = null;

        self.prevPos = null;
        self.currPos = 0;

        self.firstRun = null;

        // Create group elements from original item collection
        self.createGroup( content );

        if ( !self.group.length ) {
            return;
        }

        // Save last active element and current scroll position
        self.$lastFocus = $(document.activeElement).blur();

        // Collection of gallery objects
        self.slides = {};

        self.init( content );

    };

    $.extend(FancyBox.prototype, {

        // Create DOM structure
        // ====================

        init : function() {
            var self = this;

            var testWidth, $container, buttonStr;

            var firstItemOpts = self.group[ self.currIndex ].opts;

            self.scrollTop  = $D.scrollTop();
            self.scrollLeft = $D.scrollLeft();


            // Hide scrollbars
            // ===============

            if ( !$.fancybox.getInstance() && !$.fancybox.isMobile && $( 'body' ).css('overflow') !== 'hidden' ) {
                testWidth = $( 'body' ).width();

                $( 'html' ).addClass( 'fancybox-enabled' );

                // Compare body width after applying "overflow: hidden"
                testWidth = $( 'body' ).width() - testWidth;

                // If width has changed - compensate missing scrollbars by adding right margin
                if ( testWidth > 1 ) {
                    $( 'head' ).append( '<style id="fancybox-style-noscroll" type="text/css">.compensate-for-scrollbar, .fancybox-enabled body { margin-right: ' + testWidth + 'px; }</style>' );
                }
            }


            // Build html markup and set references
            // ====================================

            // Build html code for buttons and insert into main template
            buttonStr = '';

            $.each( firstItemOpts.buttons, function( index, value ) {
                buttonStr += ( firstItemOpts.btnTpl[ value ] || '' );
            });

            // Create markup from base template, it will be initially hidden to
            // avoid unnecessary work like painting while initializing is not complete
            $container = $( self.translate( self, firstItemOpts.baseTpl.replace( '\{\{BUTTONS\}\}', buttonStr ) ) )
                .addClass( 'fancybox-is-hidden' )
                .attr('id', 'fancybox-container-' + self.id)
                .addClass( firstItemOpts.baseClass )
                .data( 'FancyBox', self )
                .prependTo( firstItemOpts.parentEl );

            // Create object holding references to jQuery wrapped nodes
            self.$refs = {
                container : $container
            };

            [ 'bg', 'inner', 'infobar', 'toolbar', 'stage', 'caption' ].forEach(function(item) {
                self.$refs[ item ] = $container.find( '.fancybox-' + item );
            });

            // Check for redundant elements
            if ( !firstItemOpts.arrows || self.group.length < 2 ) {
                $container.find('.fancybox-navigation').remove();
            }

            if ( !firstItemOpts.infobar ) {
                self.$refs.infobar.remove();
            }

            if ( !firstItemOpts.toolbar ) {
                self.$refs.toolbar.remove();
            }

            self.trigger( 'onInit' );

            // Bring to front and enable events
            self.activate();

            // Build slides, load and reveal content
            self.jumpTo( self.currIndex );
        },


        // Simple i18n support - replaces object keys found in template
        // with corresponding values
        // ============================================================

        translate : function( obj, str ) {
            var arr = obj.opts.i18n[ obj.opts.lang ];

            return str.replace(/\{\{(\w+)\}\}/g, function(match, n) {
                var value = arr[n];

                if ( value === undefined ) {
                    return match;
                }

                return value;
            });
        },

        // Create array of gally item objects
        // Check if each object has valid type and content
        // ===============================================

        createGroup : function ( content ) {
            var self  = this;
            var items = $.makeArray( content );

            $.each(items, function( i, item ) {
                var obj  = {},
                    opts = {},
                    data = [],
                    $item,
                    type,
                    src,
                    srcParts;

                // Step 1 - Make sure we have an object
                // ====================================

                if ( $.isPlainObject( item ) ) {

                    // We probably have manual usage here, something like
                    // $.fancybox.open( [ { src : "image.jpg", type : "image" } ] )

                    obj  = item;
                    opts = item.opts || item;

                } else if ( $.type( item ) === 'object' && $( item ).length ) {

                    // Here we propbably have jQuery collection returned by some selector

                    $item = $( item );
                    data  = $item.data();

                    opts = 'options' in data ? data.options : {};
                    opts = $.type( opts ) === 'object' ? opts : {};

                    obj.src  = 'src' in data ? data.src : ( opts.src || $item.attr( 'href' ) );

                    [ 'width', 'height', 'thumb', 'type', 'filter' ].forEach(function(item) {
                        if ( item in data ) {
                            opts[ item ] = data[ item ];
                        }
                    });

                    if ( 'srcset' in data ) {
                        opts.image = { srcset : data.srcset };
                    }

                    opts.$orig = $item;

                    if ( !obj.type && !obj.src ) {
                        obj.type = 'inline';
                        obj.src  = item;
                    }

                } else {

                    // Assume we have a simple html code, for example:
                    // $.fancybox.open( '<div><h1>Hi!</h1></div>' );

                    obj = {
                        type : 'html',
                        src  : item + ''
                    };

                }

                // Each gallery object has full collection of options
                obj.opts = $.extend( true, {}, self.opts, opts );

                if ( $.fancybox.isMobile ) {
                    obj.opts = $.extend( true, {}, obj.opts, obj.opts.mobile );
                }


                // Step 2 - Make sure we have content type, if not - try to guess
                // ==============================================================

                type = obj.type || obj.opts.type;
                src  = obj.src || '';

                if ( !type && src ) {
                    if ( src.match(/(^data:image\/[a-z0-9+\/=]*,)|(\.(jp(e|g|eg)|gif|png|bmp|webp|svg|ico)((\?|#).*)?$)/i) ) {
                        type = 'image';

                    } else if ( src.match(/\.(pdf)((\?|#).*)?$/i) ) {
                        type = 'pdf';

                    } else if ( src.charAt(0) === '#' ) {
                        type = 'inline';
                    }
                }

                obj.type = type;


                // Step 3 - Some adjustments
                // =========================

                obj.index = self.group.length;

                // Check if $orig and $thumb objects exist
                if ( obj.opts.$orig && !obj.opts.$orig.length ) {
                    delete obj.opts.$orig;
                }

                if ( !obj.opts.$thumb && obj.opts.$orig ) {
                    obj.opts.$thumb = obj.opts.$orig.find( 'img:first' );
                }

                if ( obj.opts.$thumb && !obj.opts.$thumb.length ) {
                    delete obj.opts.$thumb;
                }

                // Caption is a "special" option, it can be passed as a method
                if ( $.type( obj.opts.caption ) === 'function' ) {
                    obj.opts.caption = obj.opts.caption.apply( item, [ self, obj ] );

                } else if ( 'caption' in data ) {
                    obj.opts.caption = data.caption;
                }

                // Make sure we have caption as a string
                obj.opts.caption = obj.opts.caption === undefined ? '' : obj.opts.caption + '';

                // Check if url contains "filter" used to filter the content
                // Example: "ajax.html #something"
                if ( type === 'ajax' ) {
                    srcParts = src.split(/\s+/, 2);

                    if ( srcParts.length > 1 ) {
                        obj.src = srcParts.shift();

                        obj.opts.filter = srcParts.shift();
                    }
                }

                if ( obj.opts.smallBtn == 'auto' ) {

                    if ( $.inArray( type, ['html', 'inline', 'ajax'] ) > -1 ) {
                        obj.opts.toolbar  = false;
                        obj.opts.smallBtn = true;

                    } else {
                        obj.opts.smallBtn = false;
                    }

                }

                // If the type is "pdf", then simply load file into iframe
                if ( type === 'pdf' ) {
                    obj.type = 'iframe';

                    obj.opts.iframe.preload = false;
                }

                // Hide all buttons and disable interactivity for modal items
                if ( obj.opts.modal ) {

                    obj.opts = $.extend(true, obj.opts, {
                        // Remove buttons
                        infobar : 0,
                        toolbar : 0,

                        smallBtn : 0,

                        // Disable keyboard navigation
                        keyboard : 0,

                        // Disable some modules
                        slideShow  : 0,
                        fullScreen : 0,
                        thumbs     : 0,
                        touch      : 0,

                        // Disable click event handlers
                        clickContent    : false,
                        clickSlide      : false,
                        clickOutside    : false,
                        dblclickContent : false,
                        dblclickSlide   : false,
                        dblclickOutside : false
                    });

                }

                // Step 4 - Add processed object to group
                // ======================================

                self.group.push( obj );

            });

        },


        // Attach an event handler functions for:
        //   - navigation buttons
        //   - browser scrolling, resizing;
        //   - focusing
        //   - keyboard
        //   - detect idle
        // ======================================

        addEvents : function() {
            var self = this;

            self.removeEvents();

            // Make navigation elements clickable
            self.$refs.container.on('click.fb-close', '[data-fancybox-close]', function(e) {
                e.stopPropagation();
                e.preventDefault();

                self.close( e );

            }).on( 'click.fb-prev touchend.fb-prev', '[data-fancybox-prev]', function(e) {
                e.stopPropagation();
                e.preventDefault();

                self.previous();

            }).on( 'click.fb-next touchend.fb-next', '[data-fancybox-next]', function(e) {
                e.stopPropagation();
                e.preventDefault();

                self.next();

            });


            // Handle page scrolling and browser resizing
            $W.on('orientationchange.fb resize.fb', function(e) {

                if ( e && e.originalEvent && e.originalEvent.type === "resize" ) {

                    requestAFrame(function() {
                        self.update();
                    });

                } else {

                    self.$refs.stage.hide();

                    setTimeout(function() {
                        self.$refs.stage.show();

                        self.update();
                    }, 500);

                }

            });

            // Trap keyboard focus inside of the modal, so the user does not accidentally tab outside of the modal
            // (a.k.a. "escaping the modal")
            $D.on('focusin.fb', function(e) {
                var instance = $.fancybox ? $.fancybox.getInstance() : null;

                if ( instance.isClosing || !instance.current || !instance.current.opts.trapFocus || $( e.target ).hasClass( 'fancybox-container' ) || $( e.target ).is( document ) ) {
                    return;
                }

                if ( instance && $( e.target ).css( 'position' ) !== 'fixed' && !instance.$refs.container.has( e.target ).length ) {
                    e.stopPropagation();

                    instance.focus();

                    // Sometimes page gets scrolled, set it back
                    $W.scrollTop( self.scrollTop ).scrollLeft( self.scrollLeft );
                }
            });


            // Enable keyboard navigation
            $D.on('keydown.fb', function (e) {
                var current = self.current,
                    keycode = e.keyCode || e.which;

                if ( !current || !current.opts.keyboard ) {
                    return;
                }

                if ( $(e.target).is('input') || $(e.target).is('textarea') ) {
                    return;
                }

                // Backspace and Esc keys
                if ( keycode === 8 || keycode === 27 ) {
                    e.preventDefault();

                    self.close( e );

                    return;
                }

                // Left arrow and Up arrow
                if ( keycode === 37 || keycode === 38 ) {
                    e.preventDefault();

                    self.previous();

                    return;
                }

                // Righ arrow and Down arrow
                if ( keycode === 39 || keycode === 40 ) {
                    e.preventDefault();

                    self.next();

                    return;
                }

                self.trigger('afterKeydown', e, keycode);
            });


            // Hide controls after some inactivity period
            if ( self.group[ self.currIndex ].opts.idleTime ) {
                self.idleSecondsCounter = 0;

                $D.on('mousemove.fb-idle mouseenter.fb-idle mouseleave.fb-idle mousedown.fb-idle touchstart.fb-idle touchmove.fb-idle scroll.fb-idle keydown.fb-idle', function() {
                    self.idleSecondsCounter = 0;

                    if ( self.isIdle ) {
                        self.showControls();
                    }

                    self.isIdle = false;
                });

                self.idleInterval = window.setInterval(function() {

                    self.idleSecondsCounter++;

                    if ( self.idleSecondsCounter >= self.group[ self.currIndex ].opts.idleTime ) {
                        self.isIdle = true;
                        self.idleSecondsCounter = 0;

                        self.hideControls();
                    }

                }, 1000);
            }

        },


        // Remove events added by the core
        // ===============================

        removeEvents : function () {
            var self = this;

            $W.off( 'orientationchange.fb resize.fb' );
            $D.off( 'focusin.fb keydown.fb .fb-idle' );

            this.$refs.container.off( '.fb-close .fb-prev .fb-next' );

            if ( self.idleInterval ) {
                window.clearInterval( self.idleInterval );

                self.idleInterval = null;
            }
        },


        // Change to previous gallery item
        // ===============================

        previous : function( duration ) {
            return this.jumpTo( this.currPos - 1, duration );
        },


        // Change to next gallery item
        // ===========================

        next : function( duration ) {
            return this.jumpTo( this.currPos + 1, duration );
        },


        // Switch to selected gallery item
        // ===============================

        jumpTo : function ( pos, duration, slide ) {
            var self = this,
                firstRun,
                loop,
                current,
                previous,
                canvasWidth,
                currentPos,
                transitionProps;

            var groupLen = self.group.length;

            if ( self.isSliding || self.isClosing || ( self.isAnimating && self.firstRun ) ) {
                return;
            }

            pos  = parseInt( pos, 10 );
            loop = self.current ? self.current.opts.loop : self.opts.loop;

            if ( !loop && ( pos < 0 || pos >= groupLen ) ) {
                return false;
            }

            firstRun = self.firstRun = ( self.firstRun === null );

            if ( groupLen < 2 && !firstRun && !!self.isSliding ) {
                return;
            }

            previous = self.current;

            self.prevIndex = self.currIndex;
            self.prevPos   = self.currPos;

            // Create slides
            current = self.createSlide( pos );

            if ( groupLen > 1 ) {
                if ( loop || current.index > 0 ) {
                    self.createSlide( pos - 1 );
                }

                if ( loop || current.index < groupLen - 1 ) {
                    self.createSlide( pos + 1 );
                }
            }

            self.current   = current;
            self.currIndex = current.index;
            self.currPos   = current.pos;

            self.trigger( 'beforeShow', firstRun );

            self.updateControls();

            currentPos = $.fancybox.getTranslate( current.$slide );

            current.isMoved        = ( currentPos.left !== 0 || currentPos.top !== 0 ) && !current.$slide.hasClass( 'fancybox-animated' );
            current.forcedDuration = undefined;

            if ( $.isNumeric( duration ) ) {
                current.forcedDuration = duration;
            } else {
                duration = current.opts[ firstRun ? 'animationDuration' : 'transitionDuration' ];
            }

            duration = parseInt( duration, 10 );

            // Fresh start - reveal container, current slide and start loading content
            if ( firstRun ) {

                if ( current.opts.animationEffect && duration ) {
                    self.$refs.container.css( 'transition-duration', duration + 'ms' );
                }

                self.$refs.container.removeClass( 'fancybox-is-hidden' );

                forceRedraw( self.$refs.container );

                self.$refs.container.addClass( 'fancybox-is-open' );

                // Make first slide visible (to display loading icon, if needed)
                current.$slide.addClass( 'fancybox-slide--current' );

                self.loadSlide( current );

                self.preload();

                return;
            }

            // Clean up
            $.each(self.slides, function( index, slide ) {
                $.fancybox.stop( slide.$slide );
            });

            // Make current that slide is visible even if content is still loading
            current.$slide.removeClass( 'fancybox-slide--next fancybox-slide--previous' ).addClass( 'fancybox-slide--current' );

            // If slides have been dragged, animate them to correct position
            if ( current.isMoved ) {
                canvasWidth = Math.round( current.$slide.width() );

                $.each(self.slides, function( index, slide ) {
                    var pos = slide.pos - current.pos;

                    $.fancybox.animate( slide.$slide, {
                        top  : 0,
                        left : ( pos * canvasWidth ) + ( pos * slide.opts.gutter )
                    }, duration, function() {

                        slide.$slide.removeAttr('style').removeClass( 'fancybox-slide--next fancybox-slide--previous' );

                        if ( slide.pos === self.currPos ) {
                            current.isMoved = false;

                            self.complete();
                        }
                    });
                });

            } else {
                self.$refs.stage.children().removeAttr( 'style' );
            }

            // Start transition that reveals current content
            // or wait when it will be loaded

            if ( current.isLoaded ) {
                self.revealContent( current );

            } else {
                self.loadSlide( current );
            }

            self.preload();

            if ( previous.pos === current.pos ) {
                return;
            }

            // Handle previous slide
            // =====================

            transitionProps = 'fancybox-slide--' + ( previous.pos > current.pos ? 'next' : 'previous' );

            previous.$slide.removeClass( 'fancybox-slide--complete fancybox-slide--current fancybox-slide--next fancybox-slide--previous' );

            previous.isComplete = false;

            if ( !duration || ( !current.isMoved && !current.opts.transitionEffect ) ) {
                return;
            }

            if ( current.isMoved ) {
                previous.$slide.addClass( transitionProps );

            } else {

                transitionProps = 'fancybox-animated ' + transitionProps + ' fancybox-fx-' + current.opts.transitionEffect;

                $.fancybox.animate( previous.$slide, transitionProps, duration, function() {
                    previous.$slide.removeClass( transitionProps ).removeAttr( 'style' );
                });

            }

        },


        // Create new "slide" element
        // These are gallery items  that are actually added to DOM
        // =======================================================

        createSlide : function( pos ) {

            var self = this;
            var $slide;
            var index;

            index = pos % self.group.length;
            index = index < 0 ? self.group.length + index : index;

            if ( !self.slides[ pos ] && self.group[ index ] ) {
                $slide = $('<div class="fancybox-slide"></div>').appendTo( self.$refs.stage );

                self.slides[ pos ] = $.extend( true, {}, self.group[ index ], {
                    pos      : pos,
                    $slide   : $slide,
                    isLoaded : false,
                });

                self.updateSlide( self.slides[ pos ] );
            }

            return self.slides[ pos ];
        },


        // Scale image to the actual size of the image
        // ===========================================

        scaleToActual : function( x, y, duration ) {

            var self = this;

            var current = self.current;
            var $what   = current.$content;

            var imgPos, posX, posY, scaleX, scaleY;

            var canvasWidth  = parseInt( current.$slide.width(), 10 );
            var canvasHeight = parseInt( current.$slide.height(), 10 );

            var newImgWidth  = current.width;
            var newImgHeight = current.height;

            if ( !( current.type == 'image' && !current.hasError) || !$what || self.isAnimating) {
                return;
            }

            $.fancybox.stop( $what );

            self.isAnimating = true;

            x = x === undefined ? canvasWidth  * 0.5  : x;
            y = y === undefined ? canvasHeight * 0.5  : y;

            imgPos = $.fancybox.getTranslate( $what );

            scaleX  = newImgWidth  / imgPos.width;
            scaleY  = newImgHeight / imgPos.height;

            // Get center position for original image
            posX = ( canvasWidth * 0.5  - newImgWidth * 0.5 );
            posY = ( canvasHeight * 0.5 - newImgHeight * 0.5 );

            // Make sure image does not move away from edges
            if ( newImgWidth > canvasWidth ) {
                posX = imgPos.left * scaleX - ( ( x * scaleX ) - x );

                if ( posX > 0 ) {
                    posX = 0;
                }

                if ( posX <  canvasWidth - newImgWidth ) {
                    posX = canvasWidth - newImgWidth;
                }
            }

            if ( newImgHeight > canvasHeight) {
                posY = imgPos.top  * scaleY - ( ( y * scaleY ) - y );

                if ( posY > 0 ) {
                    posY = 0;
                }

                if ( posY <  canvasHeight - newImgHeight ) {
                    posY = canvasHeight - newImgHeight;
                }
            }

            self.updateCursor( newImgWidth, newImgHeight );

            $.fancybox.animate( $what, {
                top    : posY,
                left   : posX,
                scaleX : scaleX,
                scaleY : scaleY
            }, duration || 330, function() {
                self.isAnimating = false;
            });

            // Stop slideshow
            if ( self.SlideShow && self.SlideShow.isActive ) {
                self.SlideShow.stop();
            }
        },


        // Scale image to fit inside parent element
        // ========================================

        scaleToFit : function( duration ) {

            var self = this;

            var current = self.current;
            var $what   = current.$content;
            var end;

            if ( !( current.type == 'image' && !current.hasError) || !$what || self.isAnimating ) {
                return;
            }

            $.fancybox.stop( $what );

            self.isAnimating = true;

            end = self.getFitPos( current );

            self.updateCursor( end.width, end.height );

            $.fancybox.animate( $what, {
                top    : end.top,
                left   : end.left,
                scaleX : end.width  / $what.width(),
                scaleY : end.height / $what.height()
            }, duration || 330, function() {
                self.isAnimating = false;
            });

        },

        // Calculate image size to fit inside viewport
        // ===========================================

        getFitPos : function( slide ) {
            var self  = this;
            var $what = slide.$content;

            var imgWidth  = slide.width;
            var imgHeight = slide.height;

            var margin = slide.opts.margin;

            var canvasWidth, canvasHeight, minRatio, width, height;

            if ( !$what || !$what.length || ( !imgWidth && !imgHeight) ) {
                return false;
            }

            // Convert "margin to CSS style: [ top, right, bottom, left ]
            if ( $.type( margin ) === "number" ) {
                margin = [ margin, margin ];
            }

            if ( margin.length == 2 ) {
                margin = [ margin[0], margin[1], margin[0], margin[1] ];
            }

            if ( $W.width() < 800 ) {
                margin = [ 0, 0, 0, 0 ];
            }

            // We can not use $slide width here, because it can have different diemensions while in transiton
            canvasWidth  = parseInt( self.$refs.stage.width(), 10 )  - ( margin[ 1 ] + margin[ 3 ] );
            canvasHeight = parseInt( self.$refs.stage.height(), 10 ) - ( margin[ 0 ] + margin[ 2 ] );

            minRatio = Math.min(1, canvasWidth / imgWidth, canvasHeight / imgHeight );

            width  = Math.floor( minRatio * imgWidth );
            height = Math.floor( minRatio * imgHeight );

            // Use floor rounding to make sure it really fits
            return {
                top    : Math.floor( ( canvasHeight - height ) * 0.5 ) + margin[ 0 ],
                left   : Math.floor( ( canvasWidth  - width )  * 0.5 ) + margin[ 3 ],
                width  : width,
                height : height
            };

        },


        // Update position and content of all slides
        // =========================================

        update : function() {

            var self = this;

            $.each( self.slides, function( key, slide ) {
                self.updateSlide( slide );
            });

        },


        // Update slide position and scale content to fit
        // ==============================================

        updateSlide : function( slide ) {

            var self  = this;
            var $what = slide.$content;

            if ( $what && ( slide.width || slide.height ) ) {
                $.fancybox.stop( $what );

                $.fancybox.setTranslate( $what, self.getFitPos( slide ) );

                if ( slide.pos === self.currPos ) {
                    self.updateCursor();
                }
            }

            slide.$slide.trigger( 'refresh' );

            self.trigger( 'onUpdate', slide );

        },

        // Update cursor style depending if content can be zoomed
        // ======================================================

        updateCursor : function( nextWidth, nextHeight ) {

            var self = this;
            var isScaledDown;

            var $container = self.$refs.container.removeClass('fancybox-is-zoomable fancybox-can-zoomIn fancybox-can-drag fancybox-can-zoomOut');

            if ( !self.current || self.isClosing ) {
                return;
            }

            if ( self.isZoomable() ) {

                $container.addClass( 'fancybox-is-zoomable' );

                if ( nextWidth !== undefined && nextHeight !== undefined ) {
                    isScaledDown = nextWidth < self.current.width && nextHeight < self.current.height;

                } else {
                    isScaledDown = self.isScaledDown();
                }

                if ( isScaledDown ) {

                    // If image is scaled down, then, obviously, it can be zoomed to full size
                    $container.addClass('fancybox-can-zoomIn');

                } else {

                    if ( self.current.opts.touch ) {

                        // If image size ir largen than available available and touch module is not disable,
                        // then user can do panning
                        $container.addClass('fancybox-can-drag');

                    } else {
                        $container.addClass('fancybox-can-zoomOut');
                    }

                }

            } else if ( self.current.opts.touch ) {
                $container.addClass('fancybox-can-drag');
            }

        },


        // Check if current slide is zoomable
        // ==================================

        isZoomable : function() {

            var self = this;

            var current = self.current;
            var fitPos;

            if ( !current || self.isClosing ) {
                return;
            }

            // Assume that slide is zoomable if
            //   - image is loaded successfuly
            //   - click action is "zoom"
            //   - actual size of the image is smaller than available area
            if ( current.type === 'image' && current.isLoaded && !current.hasError &&
                ( current.opts.clickContent === 'zoom' || ( $.isFunction( current.opts.clickContent ) && current.opts.clickContent( current ) ===  "zoom" ) )
            ) {

                fitPos = self.getFitPos( current );

                if ( current.width > fitPos.width || current.height > fitPos.height ) {
                    return true;
                }

            }

            return false;

        },


        // Check if current image dimensions are smaller than actual
        // =========================================================

        isScaledDown : function() {

            var self = this;

            var current = self.current;
            var $what   = current.$content;

            var rez = false;

            if ( $what ) {
                rez = $.fancybox.getTranslate( $what );
                rez = rez.width < current.width || rez.height < current.height;
            }

            return rez;

        },


        // Check if image dimensions exceed parent element
        // ===============================================

        canPan : function() {

            var self = this;

            var current = self.current;
            var $what   = current.$content;

            var rez = false;

            if ( $what ) {
                rez = self.getFitPos( current );
                rez = Math.abs( $what.width() - rez.width ) > 1  || Math.abs( $what.height() - rez.height ) > 1;

            }

            return rez;

        },


        // Load content into the slide
        // ===========================

        loadSlide : function( slide ) {

            var self = this, type, $slide;
            var ajaxLoad;

            if ( slide.isLoading ) {
                return;
            }

            if ( slide.isLoaded ) {
                return;
            }

            slide.isLoading = true;

            self.trigger( 'beforeLoad', slide );

            type   = slide.type;
            $slide = slide.$slide;

            $slide
                .off( 'refresh' )
                .trigger( 'onReset' )
                .addClass( 'fancybox-slide--' + ( type || 'unknown' ) )
                .addClass( slide.opts.slideClass );

            // Create content depending on the type

            switch ( type ) {

                case 'image':

                    self.setImage( slide );

                break;

                case 'iframe':

                    self.setIframe( slide );

                break;

                case 'html':

                    self.setContent( slide, slide.src || slide.content );

                break;

                case 'inline':

                    if ( $( slide.src ).length ) {
                        self.setContent( slide, $( slide.src ) );

                    } else {
                        self.setError( slide );
                    }

                break;

                case 'ajax':

                    self.showLoading( slide );

                    ajaxLoad = $.ajax( $.extend( {}, slide.opts.ajax.settings, {
                        url : slide.src,
                        success : function ( data, textStatus ) {

                            if ( textStatus === 'success' ) {
                                self.setContent( slide, data );
                            }

                        },
                        error : function ( jqXHR, textStatus ) {

                            if ( jqXHR && textStatus !== 'abort' ) {
                                self.setError( slide );
                            }

                        }
                    }));

                    $slide.one( 'onReset', function () {
                        ajaxLoad.abort();
                    });

                break;

                default:

                    self.setError( slide );

                break;

            }

            return true;

        },


        // Use thumbnail image, if possible
        // ================================

        setImage : function( slide ) {

            var self   = this;
            var srcset = slide.opts.image.srcset;

            var found, temp, pxRatio, windowWidth;

            // If we have "srcset", then we need to find matching "src" value.
            // This is necessary, because when you set an src attribute, the browser will preload the image
            // before any javascript or even CSS is applied.
            if ( srcset ) {
                pxRatio     = window.devicePixelRatio || 1;
                windowWidth = window.innerWidth  * pxRatio;

                temp = srcset.split(',').map(function ( el ) {
            		var ret = {};

            		el.trim().split(/\s+/).forEach(function ( el, i ) {
                        var value = parseInt( el.substring(0, el.length - 1), 10 );

            			if ( i === 0 ) {
            				return ( ret.url = el );
            			}

                        if ( value ) {
                            ret.value   = value;
                            ret.postfix = el[ el.length - 1 ];
                        }

            		});

            		return ret;
            	});

                // Sort by value
                temp.sort(function (a, b) {
                  return a.value - b.value;
                });

                // Ok, now we have an array of all srcset values
                for ( var j = 0; j < temp.length; j++ ) {
                    var el = temp[ j ];

                    if ( ( el.postfix === 'w' && el.value >= windowWidth ) || ( el.postfix === 'x' && el.value >= pxRatio ) ) {
                        found = el;
                        break;
                    }
                }

                // If not found, take the last one
                if ( !found && temp.length ) {
                    found = temp[ temp.length - 1 ];
                }

                if ( found ) {
                    slide.src = found.url;

                    // If we have default width/height values, we can calculate height for matching source
                    if ( slide.width && slide.height && found.postfix == 'w' ) {
                        slide.height = ( slide.width / slide.height ) * found.value;
                        slide.width  = found.value;
                    }
                }
            }

            // This will be wrapper containing both ghost and actual image
            slide.$content = $('<div class="fancybox-image-wrap"></div>')
                .addClass( 'fancybox-is-hidden' )
                .appendTo( slide.$slide );


            // If we have a thumbnail, we can display it while actual image is loading
            // Users will not stare at black screen and actual image will appear gradually
            if ( slide.opts.preload !== false && slide.opts.width && slide.opts.height && ( slide.opts.thumb || slide.opts.$thumb ) ) {

                slide.width  = slide.opts.width;
                slide.height = slide.opts.height;

                slide.$ghost = $('<img />')
                    .one('error', function() {

                        $(this).remove();

                        slide.$ghost = null;

                        self.setBigImage( slide );

                    })
                    .one('load', function() {

                        self.afterLoad( slide );

                        self.setBigImage( slide );

                    })
                    .addClass( 'fancybox-image' )
                    .appendTo( slide.$content )
                    .attr( 'src', slide.opts.thumb || slide.opts.$thumb.attr( 'src' ) );

            } else {

                self.setBigImage( slide );

            }

        },


        // Create full-size image
        // ======================

        setBigImage : function ( slide ) {
            var self = this;
            var $img = $('<img />');

            slide.$image = $img
                .one('error', function() {

                    self.setError( slide );

                })
                .one('load', function() {

                    // Clear timeout that checks if loading icon needs to be displayed
                    clearTimeout( slide.timouts );

                    slide.timouts = null;

                    if ( self.isClosing ) {
                        return;
                    }

                    slide.width  = this.naturalWidth;
                    slide.height = this.naturalHeight;

                    if ( slide.opts.image.srcset ) {
                        $img.attr( 'sizes', '100vw' ).attr( 'srcset', slide.opts.image.srcset );
                    }

                    self.hideLoading( slide );

                    if ( slide.$ghost ) {

                        slide.timouts = setTimeout(function() {
                            slide.timouts = null;

                            slide.$ghost.hide();

                        }, Math.min( 300, Math.max( 1000, slide.height / 1600 ) ) );

                    } else {
                        self.afterLoad( slide );
                    }

                })
                .addClass( 'fancybox-image' )
                .attr('src', slide.src)
                .appendTo( slide.$content );

            if ( $img[0].complete ) {
                  $img.trigger( 'load' );

            } else if( $img[0].error ) {
                 $img.trigger( 'error' );

            } else {

                slide.timouts = setTimeout(function() {
                    if ( !$img[0].complete && !slide.hasError ) {
                        self.showLoading( slide );
                    }

                }, 100);

            }

        },


        // Create iframe wrapper, iframe and bindings
        // ==========================================

        setIframe : function( slide ) {
            var self	= this,
                opts    = slide.opts.iframe,
                $slide	= slide.$slide,
                $iframe;

            slide.$content = $('<div class="fancybox-content' + ( opts.preload ? ' fancybox-is-hidden' : '' ) + '"></div>')
                .css( opts.css )
                .appendTo( $slide );

            $iframe = $( opts.tpl.replace(/\{rnd\}/g, new Date().getTime()) )
                .attr( opts.attr )
                .appendTo( slide.$content );

            if ( opts.preload ) {

                self.showLoading( slide );

                // Unfortunately, it is not always possible to determine if iframe is successfully loaded
                // (due to browser security policy)

                $iframe.on('load.fb error.fb', function(e) {
                    this.isReady = 1;

                    slide.$slide.trigger( 'refresh' );

                    self.afterLoad( slide );
                });

                // Recalculate iframe content size
                // ===============================

                $slide.on('refresh.fb', function() {
                    var $wrap = slide.$content,
                        $contents,
                        $body,
                        scrollWidth,
                        frameWidth,
                        frameHeight;

                    if ( $iframe[0].isReady !== 1 ) {
                        return;
                    }

                    // Check if content is accessible,
                    // it will fail if frame is not with the same origin

                    try {
                        $contents = $iframe.contents();
                        $body     = $contents.find('body');

                    } catch (ignore) {}

                    // Calculate dimensions for the wrapper
                    if ( $body && $body.length && !( opts.css.width !== undefined && opts.css.height !== undefined ) ) {

                        scrollWidth = $iframe[0].contentWindow.document.documentElement.scrollWidth;

                        frameWidth	= Math.ceil( $body.outerWidth(true) + ( $wrap.width() - scrollWidth ) );
                        frameHeight	= Math.ceil( $body.outerHeight(true) );

                        // Resize wrapper to fit iframe content
                        $wrap.css({
                            'width'  : opts.css.width  === undefined ? frameWidth  + ( $wrap.outerWidth()  - $wrap.innerWidth() )  : opts.css.width,
                            'height' : opts.css.height === undefined ? frameHeight + ( $wrap.outerHeight() - $wrap.innerHeight() ) : opts.css.height
                        });

                    }

                    $wrap.removeClass( 'fancybox-is-hidden' );

                });

            } else {

                this.afterLoad( slide );

            }

            $iframe.attr( 'src', slide.src );

            if ( slide.opts.smallBtn === true ) {
                slide.$content.prepend( self.translate( slide, slide.opts.btnTpl.smallBtn ) );
            }

            // Remove iframe if closing or changing gallery item
            $slide.one( 'onReset', function () {

                // This helps IE not to throw errors when closing
                try {

                    $( this ).find( 'iframe' ).hide().attr( 'src', '//about:blank' );

                } catch ( ignore ) {}

                $( this ).empty();

                slide.isLoaded = false;

            });

        },


        // Wrap and append content to the slide
        // ======================================

        setContent : function ( slide, content ) {

            var self = this;

            if ( self.isClosing ) {
                return;
            }

            self.hideLoading( slide );

            slide.$slide.empty();

            if ( isQuery( content ) && content.parent().length ) {

                // If content is a jQuery object, then it will be moved to the slide.
                // The placeholder is created so we will know where to put it back.
                // If user is navigating gallery fast, then the content might be already inside fancyBox
                // =====================================================================================

                // Make sure content is not already moved to fancyBox
                content.parent( '.fancybox-slide--inline' ).trigger( 'onReset' );

                // Create temporary element marking original place of the content
                slide.$placeholder = $( '<div></div>' ).hide().insertAfter( content );

                // Make sure content is visible
                content.css('display', 'inline-block');

            } else if ( !slide.hasError ) {

                // If content is just a plain text, try to convert it to html
                if ( $.type( content ) === 'string' ) {
                    content = $('<div>').append( $.trim( content ) ).contents();

                    // If we have text node, then add wrapping element to make vertical alignment work
                    if ( content[0].nodeType === 3 ) {
                        content = $('<div>').html( content );
                    }
                }

                // If "filter" option is provided, then filter content
                if ( slide.opts.filter ) {
                    content = $('<div>').html( content ).find( slide.opts.filter );
                }

            }

            slide.$slide.one('onReset', function () {

                // Put content back
                if ( slide.$placeholder ) {
                    slide.$placeholder.after( content.hide() ).remove();

                    slide.$placeholder = null;
                }

                // Remove custom close button
                if ( slide.$smallBtn ) {
                    slide.$smallBtn.remove();

                    slide.$smallBtn = null;
                }

                // Remove content and mark slide as not loaded
                if ( !slide.hasError ) {
                    $(this).empty();

                    slide.isLoaded = false;
                }

            });

            slide.$content = $( content ).appendTo( slide.$slide );

            if ( slide.opts.smallBtn && !slide.$smallBtn ) {
                slide.$smallBtn = $( self.translate( slide, slide.opts.btnTpl.smallBtn ) ).appendTo( slide.$content );
            }

            this.afterLoad( slide );
        },

        // Display error message
        // =====================

        setError : function ( slide ) {

            slide.hasError = true;

            slide.$slide.removeClass( 'fancybox-slide--' + slide.type );

            this.setContent( slide, this.translate( slide, slide.opts.errorTpl ) );

        },


        // Show loading icon inside the slide
        // ==================================

        showLoading : function( slide ) {

            var self = this;

            slide = slide || self.current;

            if ( slide && !slide.$spinner ) {
                slide.$spinner = $( self.opts.spinnerTpl ).appendTo( slide.$slide );
            }

        },

        // Remove loading icon from the slide
        // ==================================

        hideLoading : function( slide ) {

            var self = this;

            slide = slide || self.current;

            if ( slide && slide.$spinner ) {
                slide.$spinner.remove();

                delete slide.$spinner;
            }

        },


        // Adjustments after slide content has been loaded
        // ===============================================

        afterLoad : function( slide ) {

            var self = this;

            if ( self.isClosing ) {
                return;
            }

            slide.isLoading = false;
            slide.isLoaded  = true;

            self.trigger( 'afterLoad', slide );

            self.hideLoading( slide );

            if ( slide.opts.protect && slide.$content && !slide.hasError ) {

                // Disable right click
                slide.$content.on( 'contextmenu.fb', function( e ) {
                     if ( e.button == 2 ) {
                         e.preventDefault();
                     }

                    return true;
                });

                // Add fake element on top of the image
                // This makes a bit harder for user to select image
                if ( slide.type === 'image' ) {
                    $( '<div class="fancybox-spaceball"></div>' ).appendTo( slide.$content );
                }

            }

            self.revealContent( slide );

        },


        // Make content visible
        // This method is called right after content has been loaded or
        // user navigates gallery and transition should start
        // ============================================================

        revealContent : function( slide ) {

            var self   = this;
            var $slide = slide.$slide;

            var effect, effectClassName, duration, opacity, end, start = false;

            effect   = slide.opts[ self.firstRun ? 'animationEffect'   : 'transitionEffect' ];
            duration = slide.opts[ self.firstRun ? 'animationDuration' : 'transitionDuration' ];

            duration = parseInt( slide.forcedDuration === undefined ? duration : slide.forcedDuration, 10 );

            if ( slide.isMoved || slide.pos !== self.currPos || !duration ) {
                effect = false;
            }

            // Check if can zoom
            if ( effect === 'zoom' && !( slide.pos === self.currPos && duration && slide.type === 'image' && !slide.hasError && ( start = self.getThumbPos( slide ) ) ) ) {
                effect = 'fade';
            }


            // Zoom animation
            // ==============

            if ( effect === 'zoom' ) {
                end = self.getFitPos( slide );

                end.scaleX = Math.round( (end.width  / start.width)  * 100 ) / 100;
                end.scaleY = Math.round( (end.height / start.height) * 100 ) / 100;

                delete end.width;
                delete end.height;

                // Check if we need to animate opacity
                opacity = slide.opts.zoomOpacity;

                if ( opacity == 'auto' ) {
                    opacity = Math.abs( slide.width / slide.height - start.width / start.height ) > 0.1;
                }

                if ( opacity ) {
                    start.opacity = 0.1;
                    end.opacity   = 1;
                }

                // Draw image at start position
                $.fancybox.setTranslate( slide.$content.removeClass( 'fancybox-is-hidden' ), start );

                forceRedraw( slide.$content );

                // Start animation
                $.fancybox.animate( slide.$content, end, duration, function() {
                    self.complete();
                });

                return;
            }


            self.updateSlide( slide );


            // Simply show content
            // ===================

            if ( !effect ) {
                forceRedraw( $slide );

                slide.$content.removeClass( 'fancybox-is-hidden' );

                if ( slide.pos === self.currPos ) {
                    self.complete();
                }

                return;
            }

            $.fancybox.stop( $slide );

            effectClassName = 'fancybox-animated fancybox-slide--' + ( slide.pos > self.prevPos ? 'next' : 'previous' ) + ' fancybox-fx-' + effect;

            $slide.removeAttr( 'style' ).removeClass( 'fancybox-slide--current fancybox-slide--next fancybox-slide--previous' ).addClass( effectClassName );

            slide.$content.removeClass( 'fancybox-is-hidden' );

            //Force reflow for CSS3 transitions
            forceRedraw( $slide );

            $.fancybox.animate( $slide, 'fancybox-slide--current', duration, function(e) {
                $slide.removeClass( effectClassName ).removeAttr( 'style' );

                if ( slide.pos === self.currPos ) {
                    self.complete();
                }

            }, true);

        },


        // Check if we can and have to zoom from thumbnail
        //================================================

        getThumbPos : function( slide ) {

            var self = this;
            var rez  = false;

            // Check if element is inside the viewport by at least 1 pixel
            var isElementVisible = function( $el ) {
                var element = $el[0];

                var elementRect = element.getBoundingClientRect();
                var parentRects = [];

                var visibleInAllParents;

                while ( element.parentElement !== null ) {
                    if ( $(element.parentElement).css('overflow') === 'hidden'  || $(element.parentElement).css('overflow') === 'auto' ) {
                        parentRects.push(element.parentElement.getBoundingClientRect());
                    }

                    element = element.parentElement;
                }

                visibleInAllParents = parentRects.every(function(parentRect){
                    var visiblePixelX = Math.min(elementRect.right, parentRect.right) - Math.max(elementRect.left, parentRect.left);
                    var visiblePixelY = Math.min(elementRect.bottom, parentRect.bottom) - Math.max(elementRect.top, parentRect.top);

                    return visiblePixelX > 0 && visiblePixelY > 0;
                });

                return visibleInAllParents &&
                    elementRect.bottom > 0 && elementRect.right > 0 &&
                    elementRect.left < $(window).width() && elementRect.top < $(window).height();
            };

            var $thumb   = slide.opts.$thumb;
            var thumbPos = $thumb ? $thumb.offset() : 0;
            var slidePos;

            if ( thumbPos && $thumb[0].ownerDocument === document && isElementVisible( $thumb ) ) {
                slidePos = self.$refs.stage.offset();

                rez = {
                    top    : thumbPos.top  - slidePos.top  + parseFloat( $thumb.css( "border-top-width" ) || 0 ),
                    left   : thumbPos.left - slidePos.left + parseFloat( $thumb.css( "border-left-width" ) || 0 ),
                    width  : $thumb.width(),
                    height : $thumb.height(),
                    scaleX : 1,
                    scaleY : 1
                };
            }

            return rez;
        },


        // Final adjustments after current gallery item is moved to position
        // and it`s content is loaded
        // ==================================================================

        complete : function() {

            var self = this;

            var current = self.current;
            var slides  = {};

            if ( current.isMoved || !current.isLoaded || current.isComplete ) {
                return;
            }

            current.isComplete = true;

            current.$slide.siblings().trigger( 'onReset' );

            // Trigger any CSS3 transiton inside the slide
            forceRedraw( current.$slide );

            current.$slide.addClass( 'fancybox-slide--complete' );

            // Remove unnecessary slides
            $.each( self.slides, function( key, slide ) {
                if ( slide.pos >= self.currPos - 1 && slide.pos <= self.currPos + 1 ) {
                    slides[ slide.pos ] = slide;

                } else if ( slide ) {

                    $.fancybox.stop( slide.$slide );

                    slide.$slide.unbind().remove();
                }
            });

            self.slides = slides;

            self.updateCursor();

            self.trigger( 'afterShow' );

            // Try to focus on the first focusable element
            if ( $( document.activeElement ).is( '[disabled]' ) || ( current.opts.autoFocus && !( current.type == 'image' || current.type === 'iframe' ) ) ) {
                self.focus();
            }

        },


        // Preload next and previous slides
        // ================================

        preload : function() {
            var self = this;
            var next, prev;

            if ( self.group.length < 2 ) {
                return;
            }

            next  = self.slides[ self.currPos + 1 ];
            prev  = self.slides[ self.currPos - 1 ];

            if ( next && next.type === 'image' ) {
                self.loadSlide( next );
            }

            if ( prev && prev.type === 'image' ) {
                self.loadSlide( prev );
            }

        },


        // Try to find and focus on the first focusable element
        // ====================================================

        focus : function() {
            var current = this.current;
            var $el;

            if ( this.isClosing ) {
                return;
            }

            // Skip for images and iframes
            $el = current && current.isComplete ? current.$slide.find('button,:input,[tabindex],a').filter(':not([disabled]):visible:first') : null;
            $el = $el && $el.length ? $el : this.$refs.container;

            $el.focus();
        },


        // Activates current instance - brings container to the front and enables keyboard,
        // notifies other instances about deactivating
        // =================================================================================

        activate : function () {
            var self = this;

            // Deactivate all instances
            $( '.fancybox-container' ).each(function () {
                var instance = $(this).data( 'FancyBox' );

                // Skip self and closing instances
                if (instance && instance.uid !== self.uid && !instance.isClosing) {
                    instance.trigger( 'onDeactivate' );
                }

            });

            if ( self.current ) {
                if ( self.$refs.container.index() > 0 ) {
                    self.$refs.container.prependTo( document.body );
                }

                self.updateControls();
            }

            self.trigger( 'onActivate' );

            self.addEvents();

        },


        // Start closing procedure
        // This will start "zoom-out" animation if needed and clean everything up afterwards
        // =================================================================================

        close : function( e, d ) {

            var self    = this;
            var current = self.current;

            var effect, duration;
            var $what, opacity, start, end;

            var done = function() {
                self.cleanUp( e );
            };

            if ( self.isClosing ) {
                return false;
            }

            self.isClosing = true;

            // If beforeClose callback prevents closing, make sure content is centered
            if ( self.trigger( 'beforeClose', e ) === false ) {
                self.isClosing = false;

                requestAFrame(function() {
                    self.update();
                });

                return false;
            }

            // Remove all events
            // If there are multiple instances, they will be set again by "activate" method
            self.removeEvents();

            if ( current.timouts ) {
                clearTimeout( current.timouts );
            }

            $what    = current.$content;
            effect   = current.opts.animationEffect;
            duration = $.isNumeric( d ) ? d : ( effect ? current.opts.animationDuration : 0 );

            // Remove other slides
            current.$slide.off( transitionEnd ).removeClass( 'fancybox-slide--complete fancybox-slide--next fancybox-slide--previous fancybox-animated' );

            current.$slide.siblings().trigger( 'onReset' ).remove();

            // Trigger animations
            if ( duration ) {
                self.$refs.container.removeClass( 'fancybox-is-open' ).addClass( 'fancybox-is-closing' );
            }

            // Clean up
            self.hideLoading( current );

            self.hideControls();

            self.updateCursor();

            // Check if possible to zoom-out
            if ( effect === 'zoom' && !( e !== true && $what && duration && current.type === 'image' && !current.hasError && ( end = self.getThumbPos( current ) ) ) ) {
                effect = 'fade';
            }

            if ( effect === 'zoom' ) {
                $.fancybox.stop( $what );

                start = $.fancybox.getTranslate( $what );

                start.width  = start.width  * start.scaleX;
                start.height = start.height * start.scaleY;

                // Check if we need to animate opacity
                opacity = current.opts.zoomOpacity;

                if ( opacity == 'auto' ) {
                    opacity = Math.abs( current.width / current.height - end.width / end.height ) > 0.1;
                }

                if ( opacity ) {
                    end.opacity = 0;
                }

                start.scaleX = start.width  / end.width;
                start.scaleY = start.height / end.height;

                start.width  = end.width;
                start.height = end.height;

                $.fancybox.setTranslate( current.$content, start );

                $.fancybox.animate( current.$content, end, duration, done );

                return true;
            }

            if ( effect && duration ) {

                // If skip animation
                if ( e === true ) {
                    setTimeout( done, duration );

                } else {
                    $.fancybox.animate( current.$slide.removeClass( 'fancybox-slide--current' ), 'fancybox-animated fancybox-slide--previous fancybox-fx-' + effect, duration, done );
                }

            } else {
                done();
            }

            return true;
        },


        // Final adjustments after removing the instance
        // =============================================

        cleanUp : function( e ) {
            var self = this,
                instance;

            self.current.$slide.trigger( 'onReset' );

            self.$refs.container.empty().remove();

            self.trigger( 'afterClose', e );

            // Place back focus
            if ( self.$lastFocus && !!!self.current.focusBack ) {
                self.$lastFocus.focus();
            }

            self.current = null;

            // Check if there are other instances
            instance = $.fancybox.getInstance();

            if ( instance ) {
                instance.activate();

            } else {

                $W.scrollTop( self.scrollTop ).scrollLeft( self.scrollLeft );

                $( 'html' ).removeClass( 'fancybox-enabled' );

                $( '#fancybox-style-noscroll' ).remove();
            }

        },


        // Call callback and trigger an event
        // ==================================

        trigger : function( name, slide ) {
            var args  = Array.prototype.slice.call(arguments, 1),
                self  = this,
                obj   = slide && slide.opts ? slide : self.current,
                rez;

            if ( obj ) {
                args.unshift( obj );

            } else {
                obj = self;
            }

            args.unshift( self );

            if ( $.isFunction( obj.opts[ name ] ) ) {
                rez = obj.opts[ name ].apply( obj, args );
            }

            if ( rez === false ) {
                return rez;
            }

            if ( name === 'afterClose' ) {
                $D.trigger( name + '.fb', args );

            } else {
                self.$refs.container.trigger( name + '.fb', args );
            }

        },


        // Update infobar values, navigation button states and reveal caption
        // ==================================================================

        updateControls : function ( force ) {

            var self = this;

            var current  = self.current;
            var index    = current.index;
            var opts     = current.opts;
            var caption  = opts.caption;
            var $caption = self.$refs.caption;

            // Recalculate content dimensions
            current.$slide.trigger( 'refresh' );

            self.$caption = caption && caption.length ? $caption.html( caption ) : null;

            if ( !self.isHiddenControls ) {
                self.showControls();
            }

            // Update info and navigation elements
            $('[data-fancybox-count]').html( self.group.length );
            $('[data-fancybox-index]').html( index + 1 );

            $('[data-fancybox-prev]').prop('disabled', ( !opts.loop && index <= 0 ) );
            $('[data-fancybox-next]').prop('disabled', ( !opts.loop && index >= self.group.length - 1 ) );

        },

        // Hide toolbar and caption
        // ========================

        hideControls : function () {

            this.isHiddenControls = true;

            this.$refs.container.removeClass('fancybox-show-infobar fancybox-show-toolbar fancybox-show-caption fancybox-show-nav');

        },

        showControls : function() {

            var self = this;
            var opts = self.current ? self.current.opts : self.opts;
            var $container = self.$refs.container;

            self.isHiddenControls   = false;
            self.idleSecondsCounter = 0;

            $container
                .toggleClass('fancybox-show-toolbar', !!( opts.toolbar && opts.buttons ) )
                .toggleClass('fancybox-show-infobar', !!( opts.infobar && self.group.length > 1 ) )
                .toggleClass('fancybox-show-nav',     !!( opts.arrows && self.group.length > 1 ) )
                .toggleClass('fancybox-is-modal',     !!opts.modal );

            if ( self.$caption ) {
                $container.addClass( 'fancybox-show-caption ');

            } else {
               $container.removeClass( 'fancybox-show-caption' );
           }

       },


       // Toggle toolbar and caption
       // ==========================

       toggleControls : function() {

           if ( this.isHiddenControls ) {
               this.showControls();

           } else {
               this.hideControls();
           }

       },


    });


    $.fancybox = {

        version  : "{fancybox-version}",
        defaults : defaults,


        // Get current instance and execute a command.
        //
        // Examples of usage:
        //
        //   $instance = $.fancybox.getInstance();
        //   $.fancybox.getInstance().jumpTo( 1 );
        //   $.fancybox.getInstance( 'jumpTo', 1 );
        //   $.fancybox.getInstance( function() {
        //       console.info( this.currIndex );
        //   });
        // ======================================================

        getInstance : function ( command ) {
            var instance = $('.fancybox-container:not(".fancybox-is-closing"):first').data( 'FancyBox' );
            var args     = Array.prototype.slice.call(arguments, 1);

            if ( instance instanceof FancyBox ) {

                if ( $.type( command ) === 'string' ) {
                    instance[ command ].apply( instance, args );

                } else if ( $.type( command ) === 'function' ) {
                    command.apply( instance, args );

                }

                return instance;
            }

            return false;

        },


        // Create new instance
        // ===================

        open : function ( items, opts, index ) {
            return new FancyBox( items, opts, index );
        },


        // Close current or all instances
        // ==============================

        close : function ( all ) {
            var instance = this.getInstance();

            if ( instance ) {
                instance.close();

                // Try to find and close next instance

                if ( all === true ) {
                    this.close();
                }
            }

        },

        // Close instances and unbind all events
        // ==============================

        destroy : function() {

            this.close( true );

            $D.off( 'click.fb-start' );

        },


        // Try to detect mobile devices
        // ============================

        isMobile : document.createTouch !== undefined && /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent),


        // Detect if 'translate3d' support is available
        // ============================================

        use3d : (function() {
            var div = document.createElement('div');

            return window.getComputedStyle && window.getComputedStyle( div ).getPropertyValue('transform') && !(document.documentMode && document.documentMode < 11);
        }()),


        // Helper function to get current visual state of an element
        // returns array[ top, left, horizontal-scale, vertical-scale, opacity ]
        // =====================================================================

        getTranslate : function( $el ) {
            var matrix;

            if ( !$el || !$el.length ) {
                return false;
            }

            matrix  = $el.eq( 0 ).css('transform');

            if ( matrix && matrix.indexOf( 'matrix' ) !== -1 ) {
                matrix = matrix.split('(')[1];
                matrix = matrix.split(')')[0];
                matrix = matrix.split(',');
            } else {
                matrix = [];
            }

            if ( matrix.length ) {

                // If IE
                if ( matrix.length > 10 ) {
                    matrix = [ matrix[13], matrix[12], matrix[0], matrix[5] ];

                } else {
                    matrix = [ matrix[5], matrix[4], matrix[0], matrix[3]];
                }

                matrix = matrix.map(parseFloat);

            } else {
                matrix = [ 0, 0, 1, 1 ];

                var transRegex = /\.*translate\((.*)px,(.*)px\)/i;
                var transRez = transRegex.exec( $el.eq( 0 ).attr('style') );

                if ( transRez ) {
                    matrix[ 0 ] = parseFloat( transRez[2] );
                    matrix[ 1 ] = parseFloat( transRez[1] );
                }
            }

            return {
                top     : matrix[ 0 ],
                left    : matrix[ 1 ],
                scaleX  : matrix[ 2 ],
                scaleY  : matrix[ 3 ],
                opacity : parseFloat( $el.css('opacity') ),
                width   : $el.width(),
                height  : $el.height()
            };

        },


        // Shortcut for setting "translate3d" properties for element
        // Can set be used to set opacity, too
        // ========================================================

        setTranslate : function( $el, props ) {
            var str  = '';
            var css  = {};

            if ( !$el || !props ) {
                return;
            }

            if ( props.left !== undefined || props.top !== undefined ) {
                str = ( props.left === undefined ? $el.position().left : props.left )  + 'px, ' + ( props.top === undefined ? $el.position().top : props.top ) + 'px';

                if ( this.use3d ) {
                    str = 'translate3d(' + str + ', 0px)';

                } else {
                    str = 'translate(' + str + ')';
                }
            }

            if ( props.scaleX !== undefined && props.scaleY !== undefined ) {
                str = (str.length ? str + ' ' : '') + 'scale(' + props.scaleX + ', ' + props.scaleY + ')';
            }

            if ( str.length ) {
                css.transform = str;
            }

            if ( props.opacity !== undefined ) {
                css.opacity = props.opacity;
            }

            if ( props.width !== undefined ) {
                css.width = props.width;
            }

            if ( props.height !== undefined ) {
                css.height = props.height;
            }

            return $el.css( css );
        },


        // Simple CSS transition handler
        // =============================

        animate : function ( $el, to, duration, callback, leaveAnimationName ) {
            var event = transitionEnd || 'transitionend';

            if ( $.isFunction( duration ) ) {
                callback = duration;
                duration = null;
            }

            if ( !$.isPlainObject( to ) ) {
                $el.removeAttr('style');
            }

            $el.on( event, function(e) {

                // Skip events from child elements and z-index change
                if ( e && e.originalEvent && ( !$el.is( e.originalEvent.target ) || e.originalEvent.propertyName == 'z-index' ) ) {
                    return;
                }

                $el.off( event );

                if ( $.isPlainObject( to ) ) {

                    if ( to.scaleX !== undefined && to.scaleY !== undefined ) {
                        $el.css( 'transition-duration', '0ms' );

                        to.width  = $el.width()  * to.scaleX;
                        to.height = $el.height() * to.scaleY;

                        to.scaleX = 1;
                        to.scaleY = 1;

                        $.fancybox.setTranslate( $el, to );
                    }

                } else if ( leaveAnimationName !== true ) {
                    $el.removeClass( to );
                }

                if ( $.isFunction( callback ) ) {
                    callback( e );
                }

            });

            if ( $.isNumeric( duration ) ) {
                $el.css( 'transition-duration', duration + 'ms' );
            }

            if ( $.isPlainObject( to ) ) {
                $.fancybox.setTranslate( $el, to );

            } else {
                $el.addClass( to );
            }

            $el.data("timer", setTimeout(function() {
                $el.trigger( 'transitionend' );
            }, duration + 16));

        },

        stop : function( $el ) {
            clearTimeout( $el.data("timer") );

            $el.off( transitionEnd );
        }

    };


    // Default click handler for "fancyboxed" links
    // ============================================

    function _run( e ) {
        var target	= e.currentTarget,
            opts	= e.data ? e.data.options : {},
            items	= e.data ? e.data.items : [],
            value	= $(target).attr( 'data-fancybox' ) || '',
            index	= 0;

        e.preventDefault();
        e.stopPropagation();

        // Get all related items and find index for clicked one
        if ( value ) {
            items = items.length ? items.filter( '[data-fancybox="' + value + '"]' ) : $( '[data-fancybox="' + value + '"]' );
            index = items.index( target );

            // Sometimes current item can not be found
            // (for example, when slider clones items)
            if ( index < 0 ) {
                index = 0;
            }

        } else {
            items = [ target ];
        }

        $.fancybox.open( items, opts, index );
    }


    // Create a jQuery plugin
    // ======================

    $.fn.fancybox = function (options) {
        var selector;

        options  = options || {};
        selector = options.selector || false;

        if ( selector ) {

            $( 'body' ).off( 'click.fb-start', selector ).on( 'click.fb-start', selector, {
                items   : $( selector ),
                options : options
            }, _run );

        } else {

            this.off( 'click.fb-start' ).on( 'click.fb-start', {
                items   : this,
                options : options
            }, _run);

        }

        return this;
    };


    // Self initializing plugin
    // ========================

    $D.on( 'click.fb-start', '[data-fancybox]', _run );

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