/**
 * The Shadowbox class.
 *
 * This file is part of Shadowbox.
 *
 * Shadowbox is an online media viewer application that supports all of the
 * web's most popular media publishing formats. Shadowbox is written entirely
 * in JavaScript and CSS and is highly customizable. Using Shadowbox, website
 * authors can showcase a wide assortment of media in all major browsers without
 * navigating users away from the linking page.
 *
 * You should have received a license with this distribution explaining the terms
 * under which Shadowbox may be used. If you did not, you may obtain a copy of the
 * license at http://shadowbox-js.com/LICENSE
 *
 * @author      Michael J. I. Jackson <michael@mjijackson.com>
 * @copyright   2007-2009 Michael J. I. Jackson
 * @version     SVN: $Id: shadowbox.js 20M 2009-04-29 04:26:23Z (local) $
 */

/**
 * The Shadowbox class. Used to display different media on a web page using a
 * Lightbox-like effect.
 *
 * Known issues:
 *
 * - Location.toString exception in FF3 when loading Flash content into an
 *   iframe (such as a YouTube video). Known Flash bug, will not be fixed.
 *   http://bugs.adobe.com/jira/browse/FP-561
 *
 * Useful resources:
 *
 * - http://www.alistapart.com/articles/byebyeembed
 * - http://www.w3.org/TR/html401/struct/objects.html
 * - http://www.dyn-web.com/dhtml/iframes/
 * - http://www.apple.com/quicktime/player/specs.html
 * - http://www.apple.com/quicktime/tutorials/embed2.html
 * - http://www.howtocreate.co.uk/wrongWithIE/?chapter=navigator.plugins
 * - http://msdn.microsoft.com/en-us/library/ms532969.aspx
 * - http://support.microsoft.com/kb/316992
 * - http://www.alistapart.com/articles/flashembedcagematch
 */
var Shadowbox = function()
{

    var ua = navigator.userAgent.toLowerCase(),

    // the Shadowbox object
    S = {

        /**
        * The current version of Shadowbox.
        *
        * @var     String
        * @public
        */
        version: "3.0b",

        /**
        * The name of the adapter currently being used.
        *
        * @var     String
        * @public
        */
        adapter: null,

        /**
        * The array index of the current gallery that is currently being viewed.
        *
        * @var     Number
        * @public
        */
        current: -1,

        /**
        * An array containing the gallery objects currently being viewed. In the
        * case of non-gallery items, this will only hold one object.
        *
        * @var     Array
        * @public
        */
        gallery: [],

        /**
        * A cache of options for links that have been set up for use with
        * Shadowbox.
        *
        * @var     Array
        * @public
        */
        cache: [],

        /**
        * The current content object.
        *
        * @var     Object
        * @public
        */
        content: null,

        /**
        * Holds the current dimensions of Shadowbox as calculated by its skin.
        * Contains the following properties:
        *
        * - height: The total height of #sb-wrapper (including title & info bars)
        * - width: The total width of #sb-wrapper
        * - inner_h: The height of #sb-body
        * - inner_w: The width of #sb-body
        * - top: The top to use for #sb-wrapper
        * - left: The left to use for #sb-wrapper
        * - oversized: True if the content is oversized (too large for the viewport)
        * - resize_h: The height to use for resizable content
        * - resize_w: The width to use for resizable content
        *
        * @var     Object
        * @public
        */
        dimensions: null,

        /**
        * Contains plugin support information. Each property of this object is a
        * boolean indicating whether that plugin is supported.
        *
        * - fla: Flash player
        * - qt: QuickTime player
        * - wmp: Windows Media player
        * - f4m: Flip4Mac plugin
        *
        * @var     Object
        * @public
        */
        plugins: null,

        /**
        * Contains the base path of the Shadowbox script.
        *
        * Note: This property will automatically be populated in Shadowbox.load.
        *
        * @var     String
        * @public
        */
        path: '/script/shadowbox/',

        /**
        * Contains the default options for Shadowbox.
        *
        * @var     Object
        * @public
        */
        options: {
            adapter: null,              // the library adapter to use
            animate: false,              // enable all animations, except for fades
            animateFade: false,          // enable fade animations
            autoplayMovies: true,       // automatically play movies
            autoDimensions: false,      // use the dimensions of the first piece as
            // the initial dimensions (if they are
            // available)
            continuous: true,          // enables continuous galleries. When enabled,
            // user will be able to skip to the first
            // gallery item from the last using next and
            // vice versa
            counterLimit: 25,           // limit to the number of counter links that
            // are displayed in a "skip" style counter
            counterType: 'skip',     // counter type. May be either "default" or
            // "skip". Skip counter displays a link for
            // each item in gallery
            displayCounter: true,       // display the gallery counter
            displayNav: true,           // show the navigation controls

            /**
            * Easing function used for animations. Based on a cubic polynomial.
            *
            * @param   Number      x       The state of the animation (% complete)
            * @return  Number              The adjusted easing value
            */
            ease: function(x)
            {
                return 1 + Math.pow(x - 1, 3);
            },

            enableKeys: true,           // enable keyboard navigation

            /**
            * An object containing names of plugins and links to their respective
            * download pages.
            */
            errors: {
                fla: {
                    name: 'Flash',
                    url: 'http://www.adobe.com/products/flashplayer/'
                },
                qt: {
                    name: 'QuickTime',
                    url: 'http://www.apple.com/quicktime/download/'
                },
                wmp: {
                    name: 'Windows Media Player',
                    url: 'http://www.microsoft.com/windows/windowsmedia/'
                },
                f4m: {
                    name: 'Flip4Mac',
                    url: 'http://www.flip4mac.com/wmv_download.htm'
                }
            },

            /**
            * A map of players to the file extensions they support. Each member of
            * this object is the name of a player (with one exception), whose value
            * is an array of file extensions that player will "play". The one
            * exception to this rule is the "qtwmp" member, which contains extensions
            * that may be played using either QuickTime or Windows Media Player.
            *
            * - img: Image file extensions
            * - swf: Flash SWF file extensions
            * - flv: Flash video file extensions (will be played by JW FLV player)
            * - qt: Movie file extensions supported by QuickTime
            * - wmp: Movie file extensions supported by Windows Media Player
            * - qtwmp: Movie file extensions supported by both QuickTime and Windows Media Player
            * - iframe: File extensions that will be display in an iframe
            *
            * IMPORTANT: If this object is to be modified, it must be copied in its
            * entirety and tweaked because it is not merged recursively with the
            * default. Also, any modifications must be passed into Shadowbox.init
            * for speed reasons.
            */
            ext: {
                img: ['png', 'jpg', 'jpeg', 'gif', 'bmp'],
                swf: ['swf'],
                flv: ['flv'],
                qt: ['dv', 'mov', 'moov', 'movie', 'mp4'],
                wmp: ['asf', 'wm', 'wmv'],
                qtwmp: ['avi', 'mpg', 'mpeg'],
                iframe: ['asp', 'aspx', 'cgi', 'cfm', 'htm', 'html', 'jsp',
                    'pl', 'php', 'php3', 'php4', 'php5', 'phtml', 'rb', 'rhtml',
                    'shtml', 'txt', 'vbs']
            },

            fadeDuration: 0.35,         // duration of the fading animations (seconds)

            /**
            * Parameters to pass to flash <object>'s.
            */
            flashParams: {
                bgcolor: '#000000',
                allowFullScreen: true
            },

            flashVars: {},              // flash vars
            flashVersion: '9.0.115',    // minimum required flash version suggested
            // by JW FLV player

            /**
            * How to handle content that is too large to display in its entirety
            * (and is resizable). A value of 'resize' will resize the content while
            * preserving aspect ratio and display it at the smaller resolution. If
            * the content is an image, a value of 'drag' will display the image at
            * its original resolution but it will be draggable within Shadowbox. A
            * value of 'none' will display the content at its original resolution
            * but it may be cropped.
            */
            handleOversize: 'resize',

            /**
            * The mode to use when handling unsupported media. May be either
            * 'remove' or 'link'. If it is 'remove', the unsupported gallery item
            * will merely be removed from the gallery. If it is the only item in
            * the gallery, the link will simply be followed. If it is 'link', a
            * link will be provided to the appropriate plugin page in place of the
            * gallery element.
            */
            handleUnsupported: 'link',

            initialHeight: 160,                 // initial height (pixels)
            initialWidth: 320,                  // initial width (pixels)
            language: 'en',                     // the language to use
            modal: false,                       // trigger Shadowbox.close() when overlay is
                                                // clicked
            onChange: null,                     // hook function to be fired when changing
                                                // from one item to the next. Is passed the
                                                // item that is about to be displayed
            onClose: null,                      // hook function to be fired when closing.
                                                // is passed the most recent item
            onFinish: null,                     // hook function to be fired when finished
                                                // loading content. Is passed current
                                                // gallery item
            onOpen: null,                       // hook function to be fired when opening.
                                                // is passed the current gallery item
            overlayColor: '#000',               // color to use for modal overlay
            overlayOpacity: 0.8,                // opacity to use for modal overlay
            players: ['img', 'iframe', 'html'], // the players to load
            resizeDuration: 0.35,               // duration of resizing animations (seconds)
            showOverlay: true,                  // show the overlay
            showMovieControls: true,            // enable movie controls on movie players
            skipSetup: false,                   // skip calling Shadowbox.setup() during  shadowbox.init()
            slideshowDelay: 0,                  // delay to use for slideshows (seconds). If
                                                // set to any duration other than 0, is interval
                                                // at which slideshow will advance
            useSizzle: false,                   // use sizzle.js to support css selectors
            viewportPadding: 20,                // amount of padding to maintain around the
                                                // edge of the viewport at all times (pixels)
            loadingTime: 750,                   // The time to show the loading screeen for...
            sizeUnitType: 'px'                  // The Size Units, Px or %. For calculating h/w
            
        },

        /**
        * Some simple browser detection variables.
        *
        * @var     Object
        * @public
        */
        client: {
            isIE: ua.indexOf('msie') > -1,
            isIE6: ua.indexOf('msie 6') > -1,
            isIE7: ua.indexOf('msie 7') > -1,
            isGecko: ua.indexOf('gecko') > -1 && ua.indexOf('safari') == -1,
            isWebkit: ua.indexOf('applewebkit/') > -1,
            isWindows: ua.indexOf('windows') > -1 || ua.indexOf('win32') > -1,
            isMac: ua.indexOf('macintosh') > -1 || ua.indexOf('mac os x') > -1,
            isLinux: ua.indexOf('linux') > -1
        },

        /**
        * An object containing some regular expressions we'll need later. Compiled
        * up front for speed.
        *
        * @var     Object
        * @public
        */
        regex: {
            domain: /:\/\/(.*?)[:\/]/,              // domain prefix
            inline: /#(.+)$/,                       // inline element id
            rel: /^(light|shadow)box/i,          // rel attribute format
            gallery: /^(light|shadow)box\[(.*?)\]/i, // rel attribute format for gallery link
            unsupported: /^unsupported-(\w+)/,           // unsupported media type
            param: /\s*([a-z_]*?)\s*=\s*(.+)\s*/   // rel string parameter
        },

        /**
        * A map of library object names to their corresponding Shadowbox adapter
        * names.
        *
        * @var     Object
        * @public
        */
        libraries: {
        /*Prototype:  'prototype',
        jQuery: 'jquery'
        MooTools:   'mootools',
        YAHOO:      'yui',
        dojo:       'dojo',
        Ext:        'ext'*/
    },

    /**
    * Applies the given set of options to those currently in use.
    *
    * Note: Options will be reset on Shadowbox.open() so this function is
    * only useful after it has already been called (while Shadowbox is
    * open).
    *
    * @param   Object      opts        The options to apply
    * @return  void
    * @public
    */
    applyOptions: function(opts)
    {
        if (opts)
        {
            // store defaults, use apply to break reference
            default_options = apply({}, S.options);
            apply(S.options, opts);
        }
    },

    /**
    * Builds an object from the original link element data to store in cache.
    * These objects contain (most of) the following keys:
    *
    * - el: the link element
    * - title: the object's title
    * - player: the player to use for the object
    * - content: the object's URL
    * - gallery: the gallery the object belongs to (optional)
    * - height: the height of the object (only necessary for movies)
    * - width: the width of the object (only necessary for movies)
    * - options: custom options to use (optional)
    *
    * A custom set of options may be passed in here that will be applied when
    * this object is displayed. However, any options that are specified in
    * the link's HTML markup will trump options given here.
    *
    * @param   HTMLElement     link    The link element to process
    * @param   Object          opts    A set of options to use for the object
    * @return  Object                  An object representing the link
    * @public
    */
    buildCacheObj: function(link, opts)
    {
        var href = link.href, // don't use getAttribute() here
            obj = {
                el: link,
                title: link.getAttribute('title'),
                options: apply({}, opts || {}),
                content: href
            };

        // remove link-level options from top-level options
        each(['player', 'title', 'height', 'width', 'gallery'], function(o)
        {
            if (typeof obj.options[o] != 'undefined')
            {
                obj[o] = obj.options[o];
                delete obj.options[o];
            }
        });

        if (!obj.player)
            obj.player = getPlayer(href);

        // HTML options always trump JavaScript options, so do these last
        var rel = link.getAttribute('rel');
        if (rel)
        {
            // extract gallery name from shadowbox[name] format
            var m = rel.match(S.regex.gallery);
            if (m)
                obj.gallery = escape(m[2]);

            // other parameters
            each(rel.split(';'), function(p)
            {
                m = p.match(S.regex.param);
                if (m)
                {
                    if (m[1] == 'options')
                        eval('apply(obj.options,' + m[2] + ')');
                    else
                        obj[m[1]] = m[2];
                }
            });
        }

        return obj;
    },

    /**
    * Jumps to the piece in the current gallery with the given index.
    *
    * @param   Number      n       The gallery index to view
    * @return  void
    * @public
    */
    change: function(n)
    {
        if (!S.gallery) return; // no current gallery
        if (!S.gallery[n])
        { // index does not exist
            if (!S.options.continuous)
            {
                return;
            } else
            {
                n = n < 0 ? S.gallery.length - 1 : 0; // loop
            }
        }

        // update current
        S.current = n;

        if (typeof slide_timer == 'number')
        {
            clearTimeout(slide_timer);
            slide_timer = null;
            slide_delay = slide_start = 0; // reset slideshow variables
        }

        if (S.options.onChange)
            S.options.onChange();

        loadContent();
    },

    /**
    * Removes all onclick listeners from elements that have been setup with
    * Shadowbox and clears all objects from cache.
    *
    * @return  void
    * @public
    */
    clearCache: function()
    {
        each(S.cache, function(obj)
        {
            if (obj.el)
                S.lib.removeEvent(obj.el, 'click', handleClick);
        });
        S.cache = [];
    },

    /**
    * Deactivates Shadowbox.
    *
    * @return  void
    * @public
    */
    close: function()
    {
        if (!active) return; // already closed
        active = false;

        listenKeys(false);

        // remove the content
        if (S.content)
        {
            S.content.remove();
            S.content = null;
        }

        // clear slideshow variables
        if (typeof slide_timer == 'number')
            clearTimeout(slide_timer);
        slide_timer = null;
        slide_delay = 0;

        if (S.options.onClose)
            S.options.onClose();

        S.skin.onClose();

        S.revertOptions();

        // reset troublesome elements to stored visibility settings
        each(v_cache, function(c)
        {
            c[0].style.visibility = c[1];
        });
    },

    /**
    * Gets the id that should be used for content elements.
    *
    * @return  String          The content element id
    * @public
    */
    contentId: function()
    {
        return content_id;
    },

    /**
    * Gets the values that should appear in the counter (if the skin
    * supports counters). If a "skip" style counter is used, the return
    * value should be an array of all counter indexes that should be
    * displayed. If the "default" counter is used, the return value will
    * be a simple "1 of 5" message as a string. The skin can use the return
    * type to determine how to build the counter.
    *
    * @return  mixed           The counter as described above
    * @public
    */
    getCounter: function()
    {
        var len = S.gallery.length;

        if (S.options.counterType == 'skip')
        {
            // limit the counter?
            var c = [],
                    i = 0,
                    end = len,
                    limit = parseInt(S.options.counterLimit) || 0;

            if (limit < len && limit > 2)
            { // support large galleries
                var h = Math.floor(limit / 2);
                i = S.current - h;
                if (i < 0) i += len;
                end = S.current + (limit - h);
                if (end > len) end -= len;
            }
            while (i != end)
            {
                if (i == len) i = 0;
                c.push(i++);
            }
        } else
            var c = (S.current + 1) + ' ' + S.lang.of + ' ' + len;

        return c;
    },

    /**
    * Gets the current gallery object.
    *
    * @return  Object          The current gallery item
    * @public
    */
    getCurrent: function()
    {
        return S.current > -1 ? S.gallery[S.current] : null;
    },

    /**
    * Determines if there is a next piece to display in the current
    * gallery.
    *
    * @return  Boolean         True if there is another piece
    * @public
    */
    hasNext: function()
    {
        return S.gallery.length > 1 &&
                (S.current != S.gallery.length - 1 || S.options.continuous);
    },

    /**
    * Initializes the Shadowbox environment. Should be called by the user in
    * the <head> of the HTML document.
    *
    * Note: This function attempts to load all Shadowbox dependencies
    * dynamically using document.write. However, if these dependencies are
    * already included, they won't be loaded again.
    *
    * @param   Object      opts    (optional) The default options to use
    * @return  void
    * @public
    */
    init: function(opts)
    {
        if (initialized) return; // don't initialize twice
        initialized = true;

        opts = opts || {};
        init_options = opts;

        // apply options
        if (opts)
            apply(S.options, opts);

        // compile file type regular expressions here for speed
        for (var e in S.options.ext)
            S.regex[e] = new RegExp('\.(' + S.options.ext[e].join('|') + ')\s*$', 'i');

        if (!S.path)
        {
            // determine script path automatically
            var path_re = /(.+)shadowbox\.js/i, path;
            each(document.getElementsByTagName('script'), function(s)
            {
                if ((path = path_re.exec(s.src)) != null)
                {
                    S.path = path[1];
                    return false;
                }
            });
        }

        //Set Shadowbox to use the jQuery adapter.
        S.adapter = 'jquery';

        each(S.options.players, function(p)
        {
            if ((p == 'swf' || p == 'flv') && !window['swfobject'])
                U.include(S.path + 'libraries/swfobject/swfobject.js');
            if (!S[p])
                U.include(S.path + 'players/shadowbox-' + p + '.js');
        });
        
        if (!S.lib)
            U.include(S.path + 'adapters/shadowbox-' + S.adapter + '.js');
    },

    /**
    * Tells whether or not Shadowbox is currently activated.
    *
    * @return  Boolean         True if activated, false otherwise
    * @public
    */
    isActive: function()
    {
        return active;
    },

    /**
    * Tells whether or not Shadowbox is currently in the middle of a
    * slideshow in a paused state.
    *
    * @return  Boolean         True if paused, false otherwise
    * @public
    */
    isPaused: function()
    {
        return slide_timer == 'paused';
    },

    /**
    * Loads Shadowbox into the DOM. Is called automatically by each adapter
    * as soon as the DOM is ready.
    *
    * @return  void
    * @public
    */
    load: function()
    {
        // apply skin options, re-apply user init options in case they overwrite
        if (S.skin.options)
        {
            apply(S.options, S.skin.options);
            apply(S.options, init_options);
        }

        // append markup and initialize skin
        var markup = S.skin.markup
        ;
        S.lib.append(document.body, markup);

        if (S.skin.init)
            S.skin.init();

        // set up window resize event handler
        var id;
        S.lib.addEvent(window, 'resize', function()
        {
            // use 50 ms event buffering to prevent jerky window resizing
            if (id)
            {
                clearTimeout(id);
                id = null;
            }
            // check if activated because IE7 fires window resize event
            // when container display is set to block
            if (active)
            {
                id = setTimeout(function()
                {
                    if (S.skin.onWindowResize)
                        S.skin.onWindowResize();
                    var c = S.content;
                    if (c && c.onWindowResize)
                        c.onWindowResize();
                }, 50);
            }
        });

        if (!S.options.skipSetup)
            S.setup();
    },

    /**
    * Jumps to the next piece in the gallery.
    *
    * @return  void
    * @public
    */
    next: function()
    {
        S.change(S.current + 1);
    },

    /**
    * Opens the given object in Shadowbox. This object may be either an
    * anchor/area element, or an object similar to the one created by
    * Shadowbox.buildCacheObj().
    *
    * @param   mixed       obj         The object or link element that defines
    *                                  what to display
    * @return  void
    * @public
    */
    open: function(obj)
    {
        // if it's a link element, build an object on the fly
        if (U.isLink(obj))
            obj = S.buildCacheObj(obj);

        // set up the gallery
        if (obj.constructor == Array)
        {
            S.gallery = obj;
            S.current = 0;
        } else
        {
            if (!obj.gallery)
            {
                // single item, no gallery
                S.gallery = [obj];
                S.current = 0;
            } else
            {
                // gallery item, build gallery from cached gallery elements
                S.current = null;
                S.gallery = [];
                each(S.cache, function(c)
                {
                    if (c.gallery && c.gallery == obj.gallery)
                    {
                        if (S.current == null && c.content == obj.content && c.title == obj.title)
                            S.current = S.gallery.length;
                        S.gallery.push(c);
                    }
                });

                // if not found in cache, prepend to front of gallery
                if (S.current == null)
                {
                    S.gallery.unshift(obj);
                    S.current = 0;
                }
            }
        }

        obj = S.getCurrent();
        if (obj.options)
        {
            S.revertOptions();
            S.applyOptions(obj.options);
        }

        // filter gallery for unsupported elements
        var g, r, m, s, a, oe = S.options.errors, msg, el;
        for (var i = 0; i < S.gallery.length; ++i)
        {
            // use apply to break the reference to the original object here
            // because we'll be modifying the properties of the gallery objects
            // directly and we don't want to taint them in case they are used
            // again in a future call
            g = S.gallery[i] = apply({}, S.gallery[i]);
            r = false; // remove the element?
            if (g.player == 'unsupported')
            {
                // don't support this at all
                r = true;
            } else if (m = S.regex.unsupported.exec(g.player))
            {
                // handle unsupported elements
                if (S.options.handleUnsupported == 'link')
                {
                    g.player = 'html';
                    // generate a link to the appropriate plugin download page(s)
                    switch (m[1])
                    {
                        case 'qtwmp':
                            s = 'either';
                            a = [oe.qt.url, oe.qt.name, oe.wmp.url, oe.wmp.name];
                            break;
                        case 'qtf4m':
                            s = 'shared';
                            a = [oe.qt.url, oe.qt.name, oe.f4m.url, oe.f4m.name];
                            break;
                        default:
                            s = 'single';
                            if (m[1] == 'swf' || m[1] == 'flv') m[1] = 'fla';
                            a = [oe[m[1]].url, oe[m[1]].name];
                    }
                    msg = S.lang.errors[s].replace(/\{(\d+)\}/g, function(m, n)
                    {
                        return a[n];
                    });
                    g.content = '<div class="sb-message">' + msg + '</div>';
                } else
                    r = true;
            } else if (g.player == 'inline')
            {
                // inline element, retrieve innerHTML
                m = S.regex.inline.exec(g.content);
                if (m)
                {
                    var el = U.get(m[1]);
                    if (el)
                        g.content = el.innerHTML;
                    else
                        throw 'Cannot find element with id ' + m[1];
                } else
                    throw 'Cannot find element id for inline content';
            } else if (g.player == 'swf' || g.player == 'flv')
            {
                var version = (g.options && g.options.flashVersion) || S.options.flashVersion;
                if (!swfobject.hasFlashPlayerVersion(version))
                {
                    // express install will be triggered because the client
                    // does not have the minimum required version of flash
                    // installed, set height and width to those of express
                    // install swf
                    g.width = 310;
                    // minimum height is 127, but +20 pixels on top and bottom
                    // looks better
                    g.height = 177;
                }
            }
            if (r)
            {
                S.gallery.splice(i, 1); // remove from gallery
                if (i < S.current)
                    --S.current; // maintain integrity of S.current
                else if (i == S.current)
                    S.current = i > 0 ? i - 1 : i; // look for supported neighbor
                --i; // decrement index for next loop
            }
        }

        // anything left to display?
        if (S.gallery.length)
        {
            if (!active)
            {
                // fire onOpen hook
                if (typeof S.options.onOpen == 'function' && S.options.onOpen(obj) === false) return;

                // hide elements troublesome for modal overlays
                v_cache = [];
                each(['select', 'object', 'embed', 'canvas'], function(tag)
                {
                    each(document.getElementsByTagName(tag), function(el)
                    {
                        v_cache.push([el, el.style.visibility || 'visible']);
                        el.style.visibility = 'hidden';
                    });
                });

                // set initial dimensions & load
                var h = S.options.autoDimensions && 'height' in obj
                        ? obj.height
                        : S.options.initialHeight;
                var w = S.options.autoDimensions && 'width' in obj
                        ? obj.width
                        : S.options.initialWidth;

                S.skin.onOpen(h, w, loadContent);
            } else
                loadContent();

            active = true;
        }
    },

    /**
    * Pauses the current slideshow.
    *
    * @return  void
    * @public
    */
    pause: function()
    {
        if (typeof slide_timer != 'number') return;

        var time = new Date().getTime();
        slide_delay = Math.max(0, slide_delay - (time - slide_start));

        // if there's any time left on current slide, pause the timer
        if (slide_delay)
        {
            clearTimeout(slide_timer);
            slide_timer = 'paused';

            if (S.skin.onPause)
                S.skin.onPause();
        }
    },

    /**
    * Sets the timer for the next image in the slideshow to be displayed.
    *
    * @return  void
    * @public
    */
    play: function()
    {
        if (!S.hasNext()) return;
        if (!slide_delay) slide_delay = S.options.slideshowDelay * 1000;
        if (slide_delay)
        {
            slide_start = new Date().getTime();
            slide_timer = setTimeout(function()
            {
                slide_delay = slide_start = 0; // reset slideshow
                S.next();
            }, slide_delay);

            if (S.skin.onPlay)
                S.skin.onPlay();
        }
    },

    /**
    * Jumps to the previous piece in the gallery.
    *
    * @return  void
    * @public
    */
    previous: function()
    {
        S.change(S.current - 1);
    },

    /**
    * Reverts Shadowbox' options to the last default set in use before
    * Shadowbox.applyOptions() was called.
    *
    * @return  void
    * @public
    */
    revertOptions: function()
    {
        apply(S.options, default_options);
    },

    /**
    * Calculates the dimensions for Shadowbox according to the given
    * parameters. Will determine if content is oversized (too large for the
    * viewport) and will automatically constrain resizable content
    * according to user preference.
    *
    * @param   Number      height      The content height
    * @param   Number      width       The content width
    * @param   Number      max_h       The maximum height available (should
    *                                  be the height of the viewport)
    * @param   Number      max_w       The maximum width available (should
    *                                  be the width of the viewport)
    * @param   Number      tb          The extra top/bottom pixels that are
    *                                  required for borders/toolbars
    * @param   Number      lr          The extra left/right pixels that are
    *                                  required for borders/toolbars
    * @param   Boolean     resizable   True if the content is able to be
    *                                  resized. Defaults to false
    * @return  Object                  The Shadowbox.dimensions object
    * @public
    */
    setDimensions: function(height, width, max_h, max_w, tb, lr, resizable)
    {
        var h = height = parseInt(height), 
            w = width = parseInt(width),
            pad = parseInt(S.options.viewportPadding) || 0;

        // calculate the max height/width
        var extra_h = 2 * pad + tb;
        if (h + extra_h >= max_h) h = max_h - extra_h;
        var extra_w = 2 * pad + lr;
        if (w + extra_w >= max_w) w = max_w - extra_w;

        //If the width/height should be a percentage
        if (S.options.sizeUnitType == '%')
        {
            h = (max_h / 100) * height;
            w = (max_w / 100) * width;
        }

        // handle oversized content
        var resize_h = height,
                resize_w = width,
                change_h = (height - h) / height,
                change_w = (width - w) / width,
                oversized = (change_h > 0 || change_w > 0);
        if (resizable && oversized && S.options.handleOversize == 'resize')
        {
            // adjust resized height/width, preserve original aspect ratio
            if (change_h > change_w)
                w = Math.round((width / height) * h);
            else if (change_w > change_h)
                h = Math.round((height / width) * w);
            resize_w = w;
            resize_h = h;
        }

        // update Shadowbox.dimensions
        S.dimensions = {
            height: h + tb,
            width: w + lr,
            inner_h: h,
            inner_w: w,
            top: (max_h - (h + extra_h)) / 2 + pad,
            left: (max_w - (w + extra_w)) / 2 + pad,
            oversized: oversized,
            resize_h: resize_h,
            resize_w: resize_w
        };

        return S.dimensions;
    },

    /**
    * Sets up listeners on the given links that will trigger Shadowbox. If no
    * links are given, this method will set up every anchor element on the page
    * with the appropriate rel attribute. It is important to note that any
    * options given here will be applied to all link elements. Multiple calls
    * to this method may be needed if different options are desired.
    *
    * Note: Because AREA elements do not support the rel attribute, they must
    * be explicitly passed to this method.
    *
    * @param   Array       links       An array (or array-like) list of anchor
    *                                  and/or area elements to set up
    * @param   Object      opts        Some options to use for the given links
    * @return  void
    * @public
    */
    setup: function(links, opts)
    {
        // get links if none specified
        if (!links)
        {
            var links = [], rel;
            each(document.getElementsByTagName('a'), function(a)
            {
                rel = a.getAttribute('rel');
                if (rel && S.regex.rel.test(rel)) links.push(a);
            });
        } else
        {
            var len = links.length;
            if (len)
            {

            } else
                links = [links]; // single link
        }

        each(links, function(link)
        {
            if (typeof link.shadowboxCacheKey == 'undefined')
            {
                // assign cache key expando, use integer primitive to avoid
                // memory leak in IE
                link.shadowboxCacheKey = S.cache.length;
                // add onclick listener
                S.lib.addEvent(link, 'click', handleClick);
            }
            S.cache[link.shadowboxCacheKey] = S.buildCacheObj(link, opts);
        });
    }

},

    U = S.util = {

        /**
        * Animates any numeric (not color) style of the given element from its
        * current state to the given value. Defaults to using pixel-based
        * measurements.
        *
        * @param   HTMLElement     el      The element to animate
        * @param   String          p       The property to animate (in camelCase)
        * @param   mixed           to      The value to animate to
        * @param   Number          d       The duration of the animation (in
        *                                  seconds)
        * @param   Function        cb      A callback function to call when the
        *                                  animation completes
        * @return  void
        * @public
        */
        animate: function(el, p, to, d, cb)
        {
            var from = parseFloat(S.lib.getStyle(el, p));
            if (isNaN(from)) from = 0;

            var delta = to - from;
            if (delta == 0)
            {
                if (cb) cb();
                return; // nothing to animate
            }

            var op = p == 'opacity';

            function fn(ease)
            {
                var to = from + ease * delta;
                if (op)
                    U.setOpacity(el, to);
                else
                    el.style[p] = to + 'px'; // default unit is px
            }

            // cancel the animation here if duration is 0 or if set in the options
            if (!d || (!op && !S.options.animate) || (op && !S.options.animateFade))
            {
                fn(1);
                if (cb) cb();
                return;
            }

            d *= 1000; // convert to milliseconds
            var begin = new Date().getTime(),
                end = begin + d,
                time,
                timer = setInterval(function()
                {
                    time = new Date().getTime();
                    if (time >= end)
                    { // end of animation
                        clearInterval(timer);
                        fn(1);
                        if (cb) cb();
                    } else
                        fn(S.options.ease((time - begin) / d));
                }, 10); // 10 ms interval is minimum on webkit
        },

        /**
        * Applies all properties of e to o.
        *
        * @param   Object      o       The original object
        * @param   Object      e       The extension object
        * @return  Object              The original object with all properties
        *                              of the extension object applied
        * @public
        */
        apply: function(o, e)
        {
            for (var p in e)
                o[p] = e[p];
            return o;
        },

        /**
        * A utility function used by the fade functions to clear the opacity
        * style setting of the given element. Required in some cases for IE.
        *
        * @param   HTMLElement     el      The element
        * @return  void
        * @public
        */
        clearOpacity: function(el)
        {
            var s = el.style;
            if (window.ActiveXObject)
            {
                // be careful not to overwrite other filters!
                if (typeof s.filter == 'string' && (/alpha/i).test(s.filter))
                    s.filter = s.filter.replace(/[\w\.]*alpha\(.*?\);?/i, '');
            } else
                s.opacity = '';
        },

        /**
        * Calls the given function for each element of obj. The obj element must
        * be array-like (meaning it must have a length property and be able to
        * be accessed using the array square bracket syntax). If scope is not
        * explicitly given, the callback will be called with a scope of the
        * current item. Will stop execution if a callback returns false.
        *
        * @param   mixed       obj     An array-like object containing the
        *                              elements
        * @param   Function    fn      The callback function
        * @param   mixed       scope   The scope of the callback
        * @return  void
        * @public
        */
        each: function(obj, fn, scope)
        {
            for (var i = 0, len = obj.length; i < len; ++i)
                if (fn.call(scope || obj[i], obj[i], i, obj) === false) return;
        },

        /**
        * Gets an element by its id.
        *
        * @param   String      id      The element id
        * @return  HTMLElement         A reference to the element with the
        *                              given id
        * @public
        */
        get: function(id)
        {
            return document.getElementById(id);
        },

        /**
        * Dynamically includes a JavaScript file in the current page.
        *
        * @param   String      file    The name of the js file to include
        * @return  void
        * @public
        */
        include: function()
        {
            var includes = {};
            return function(file)
            {
                if (includes[file]) return; // don't include same file twice
                includes[file] = true;
                document.write('<scr' + 'ipt type="text/javascript" src="' + file + '"><\/script>');
            }
        } (),

        /**
        * Determines if the given object is an anchor/area element.
        *
        * @param   mixed       obj     The object to check
        * @return  Boolean             True if the object is a link element
        * @public
        */
        isLink: function(obj)
        {
            if (!obj || !obj.tagName) return false;
            var up = obj.tagName.toUpperCase();
            return up == 'A' || up == 'AREA';
        },

        /**
        * Removes all child nodes from the given element.
        *
        * @param   HTMLElement     el      The element
        * @return  void
        * @public
        */
        removeChildren: function(el)
        {
            while (el.firstChild)
                el.removeChild(el.firstChild);
        },

        /**
        * Sets the opacity of the given element to the specified level.
        *
        * @param   HTMLElement     el      The element
        * @param   Number          o       The opacity to use
        * @return  void
        * @public
        */
        setOpacity: function(el, o)
        {
            var s = el.style;
            if (window.ActiveXObject)
            {
                s.zoom = 1; // trigger hasLayout
                s.filter = (s.filter || '').replace(/\s*alpha\([^\)]*\)/gi, '') +
                    (o == 1 ? '' : ' alpha(opacity=' + (o * 100) + ')');
            } else
                s.opacity = o;
        }

    },

// shorthand
    apply = U.apply,
    each = U.each,

/**
* The initial options object that was given by the user.
*
* @var     Object
* @private
*/
    init_options,

/**
* Keeps track of whether or not Shadowbox.init has been called.
*
* @var     Boolean
* @private
*/
    initialized = false,

/**
* Stores the default set of options in case a custom set of options is used
* on a link-by-link basis so we can restore them later.
*
* @var     Object
* @private
*/
    default_options = {},

/**
* The id to use for content objects.
*
* @var     String
* @private
*/
    content_id = 'sb-content',

/**
* Keeps track of whether or not Shadowbox is activated.
*
* @var     Boolean
* @private
*/
    active = false,

/**
* The timeout id for the slideshow transition function.
*
* @var     Number
* @private
*/
    slide_timer,

/**
* Keeps track of the time at which the current slideshow frame was
* displayed.
*
* @var     Number
* @private
*/
    slide_start,

/**
* The delay on which the next slide will display.
*
* @var     Number
* @private
*/
    slide_delay = 0,

/**
* A cache for elements that are troublesome for modal overlays.
*
* @var     Array
* @private
*/
    v_cache = [];

// detect plugin support
if (navigator.plugins && navigator.plugins.length)
{
    var names = [];
    each(navigator.plugins, function(p)
    {
        names.push(p.name);
    });
    names = names.join();
    var detectPlugin = function(n)
    {
        return names.indexOf(n) > -1;
    }
    var f4m = detectPlugin('Flip4Mac');
    S.plugins = {
        fla: detectPlugin('Shockwave Flash'),
        qt: detectPlugin('QuickTime'),
        wmp: !f4m && detectPlugin('Windows Media'), // if it's Flip4Mac, it's not really WMP
        f4m: f4m
    }
} else
{
    function detectPlugin(n)
    {
        try
        {
            var axo = new ActiveXObject(n);
        } catch (e) { }
        return !!axo;
    }
    S.plugins = {
        fla: detectPlugin('ShockwaveFlash.ShockwaveFlash'),
        qt: detectPlugin('QuickTime.QuickTime'),
        wmp: detectPlugin('wmplayer.ocx'),
        f4m: false
    }
}

/**
* Determines the player needed to display the file at the given URL. If
* the file type is not supported, the return value will be 'unsupported'.
* If the file type is not supported but the correct player can be
* determined, the return value will be 'unsupported-*' where * will be the
* player abbreviation (e.g. 'qt' = QuickTime).
*
* @param   String      url     The url of the file
* @return  String              The name of the player to use
* @private
*/
function getPlayer(url)
{
    var re = S.regex,
            p = S.plugins,
            m = url.match(re.domain),
            d = m && document.domain == m[1]; // same domain
    if (url.indexOf('#') > -1 && d) return 'inline';
    var q = url.indexOf('?');
    if (q > -1) url = url.substring(0, q); // strip query string for player detection purposes
    if (re.img.test(url)) return 'img';
    if (re.swf.test(url)) return p.fla ? 'swf' : 'unsupported-swf';
    if (re.flv.test(url)) return p.fla ? 'flv' : 'unsupported-flv';
    if (re.qt.test(url)) return p.qt ? 'qt' : 'unsupported-qt';
    if (re.wmp.test(url))
    {
        if (p.wmp) return 'wmp';
        if (p.f4m) return 'qt';
        if (S.client.isMac) return p.qt ? 'unsupported-f4m' : 'unsupported-qtf4m';
        return 'unsupported-wmp';
    }
    if (re.qtwmp.test(url))
    {
        if (p.qt) return 'qt';
        if (p.wmp) return 'wmp';
        return S.client.isMac ? 'unsupported-qt' : 'unsupported-qtwmp';
    }
    if (!d || re.iframe.test(url))
        return 'iframe';
    return 'unsupported'; // same domain, not supported
}

/**
* Handles all clicks on links that have been set up to work with Shadowbox
* and cancels the default event behavior when appropriate.
*
* @param   HTMLEvent   e           The click event object
* @return  void
* @private
*/
function handleClick(e)
{
    // get anchor/area element
    var link;
    if (U.isLink(this))
    {
        link = this; // jQuery, Prototype, YUI
    } else
    {
        link = S.lib.getTarget(e); // Ext, standalone
        while (!U.isLink(link) && link.parentNode)
            link = link.parentNode;
    }

    //S.lib.preventDefault(e); // good for debugging

    if (link)
    {
        // if this link has already been set up, use the cached version
        var key = link.shadowboxCacheKey;
        if (typeof key != 'undefined' && typeof S.cache[key] != 'undefined')
            link = S.cache[key];

        S.open(link);
        if (S.gallery.length) S.lib.preventDefault(e); // stop event
    }
}

/**
* Sets up a listener on the document for keystrokes.
*
* @param   Boolean     on      True to enable the listener, false to turn
*                              it off
* @return  void
* @private
*/
function listenKeys(on)
{
    if (!S.options.enableKeys) return;
    S.lib[(on ? 'add' : 'remove') + 'Event'](document, 'keydown', handleKey);
}

/**
* A listener function that is fired when a key is pressed.
*
* @param   mixed       e       The event object
* @return  void
* @private
*/
function handleKey(e)
{
    var code = S.lib.keyCode(e);

    // attempt to prevent default key action
    S.lib.preventDefault(e);

    switch (code)
    {
        case 81: // q
        case 88: // x
        case 27: // esc
            S.close();
            break;
        case 37: // left
            S.previous();
            break;
        case 39: // right
            S.next();
            break;
        case 32: // space
            S[(typeof slide_timer == 'number' ? 'pause' : 'play')]();
    }
}

/**
* Loads the Shadowbox with the current piece.
*
* @return  void
* @private
*/
function loadContent()
{
    var obj = S.getCurrent();
    if (!obj) return;

    // determine player, inline is really just HTML
    var p = obj.player == 'inline' ? 'html' : obj.player;
    if (typeof S[p] != 'function')
        throw 'Unknown player: ' + p;

    var change = false;
    if (S.content)
    {
        // changing from some previous content
        S.content.remove(); // remove old content
        change = true;

        S.revertOptions();
        if (obj.options)
            S.applyOptions(obj.options);
    }

    // make sure the body element doesn't have any children, just in case
    U.removeChildren(S.skin.bodyEl());

    // load the content
    S.content = new S[p](obj);
    listenKeys(false); // disable the keyboard while content is loading

    S.skin.onLoad(S.content, change, function()
    {
        if (!S.content) return;

        if (typeof S.content.ready != 'undefined')
        {
            // if content object has a ready property, wait for it to be
            // ready before loading
            var id = setInterval(function()
            {
                if (S.content)
                {
                    if (S.content.ready)
                    {
                        clearInterval(id);
                        id = null;
                        S.skin.onReady(contentReady);
                    }
                } else
                { // content has been removed
                    clearInterval(id);
                    id = null;
                }
            }, S.options.loadingTime);
        } else
            S.skin.onReady(contentReady);
    });

    // preload neighboring gallery images
    if (S.gallery.length > 1)
    {
        var next = S.gallery[S.current + 1] || S.gallery[0];
        if (next.player == 'img')
        {
            var a = new Image();
            a.src = next.content;
        }
        var prev = S.gallery[S.current - 1] || S.gallery[S.gallery.length - 1];
        if (prev.player == 'img')
        {
            var b = new Image();
            b.src = prev.content;
        }
    }
}

/**
* Callback that should be called with the content is ready to be loaded.
*
* @return  void
* @private
*/
function contentReady()
{
    if (!S.content) return;
    S.content.append(S.skin.bodyEl(), content_id, S.dimensions);
    S.skin.onFinish(finishContent);
}

/**
* Callback that should be called when the content is finished loading.
*
* @return  void
* @private
*/
function finishContent()
{
    if (!S.content) return;

    if (S.content.onLoad)
        S.content.onLoad();
    if (S.options.onFinish)
        S.options.onFinish();
    if (!S.isPaused())
        S.play(); // kick off next slide

    listenKeys(true); // re-enable keyboard when finished
}

return S;

} ();

/**
 * The default skin for Shadowbox. Separated out into its own class so that it may
 * be customized more easily by skin developers.
 */
Shadowbox.skin = function()
{

    var S = Shadowbox,
        U = S.util,

    /**
    * Keeps track of whether or not the overlay is activated.
    *
    * @var     Boolean
    * @private
    */
    overlay_on = false,

    /**
    * Id's of elements that need transparent PNG support in IE6.
    *
    * @var     Array
    * @private
    */
    png = [
        'sb-nav-close',
        'sb-nav-next',
        'sb-nav-play',
        'sb-nav-pause',
        'sb-nav-previous'
    ];

    /**
    * Sets the top of the container element. This is only necessary in IE6
    * where the container uses absolute positioning instead of fixed.
    *
    * @return  void
    * @private
    */
    function fixTop()
    {
        U.get('sb-container').style.top = document.documentElement.scrollTop + 'px';
    }

    /**
    * Toggles the visibility of #sb-container and sets its size (if on
    * IE6). Also toggles the visibility of elements (<select>, <object>, and
    * <embed>) that are troublesome for semi-transparent modal overlays. IE has
    * problems with <select> elements, while Firefox has trouble with
    * <object>s.
    *
    * @param   Function    cb      A callback to call after toggling on, absent
    *                              when toggling off
    * @return  void
    * @private
    */
    function toggleVisible(cb)
    {
        var so = U.get('sb-overlay'),
            sc = U.get('sb-container'),
            sb = U.get('sb-wrapper');

        if (cb)
        {
            if (S.client.isIE6)
            {
                // fix container top before showing
                fixTop();
                S.lib.addEvent(window, 'scroll', fixTop);
            }
            if (S.options.showOverlay)
            {
                overlay_on = true;

                // set overlay color/opacity
                so.style.backgroundColor = S.options.overlayColor;
                U.setOpacity(so, 0);
                if (!S.options.modal) S.lib.addEvent(so, 'click', S.close);

                sb.style.display = 'none'; // cleared in onLoad
            }
            sc.style.visibility = 'visible';
            if (overlay_on)
            {
                // fade in effect
                var op = parseFloat(S.options.overlayOpacity);
                U.animate(so, 'opacity', op, S.options.fadeDuration, cb);
            } else
                cb();
        } else
        {
            if (S.client.isIE6)
                S.lib.removeEvent(window, 'scroll', fixTop);
            S.lib.removeEvent(so, 'click', S.close);
            if (overlay_on)
            {
                // fade out effect
                sb.style.display = 'none';
                U.animate(so, 'opacity', 0, S.options.fadeDuration, function()
                {
                    // the following is commented because it causes the overlay to
                    // be hidden on consecutive activations in IE8, even though we
                    // set the visibility to "visible" when we reactivate
                    //sc.style.visibility = 'hidden';
                    sc.style.display = '';
                    sb.style.display = '';
                    U.clearOpacity(so);
                });
            } else
                sc.style.visibility = 'hidden';
        }
    }

    /**
    * Toggles the display of the nav control with the given id on and off.
    *
    * @param   String      id      The id of the navigation control
    * @param   Boolean     on      True to toggle on, false to toggle off
    * @return  void
    * @private
    */
    function toggleNav(id, on)
    {
        var el = U.get('sb-nav-' + id);
        if (el) el.style.display = on ? '' : 'none';
    }

    /**
    * Toggles the visibility of the "loading" layer.
    *
    * @param   Boolean     on      True to toggle on, false to toggle off
    * @param   Function    cb      The callback function to call when toggling
    *                              completes
    * @return  void
    * @private
    */
    function toggleLoading(on, cb)
    {
        var ld = U.get('sb-loading'),
            p = S.getCurrent().player,
            anim = (p == 'img' || p == 'html'); // fade on images & html

        if (on)
        {
            function fn()
            {
                U.clearOpacity(ld);
                if (cb) cb();
            }

            U.setOpacity(ld, 1);
            ld.style.display = 'block';

        } else
        {
            function fn()
            {
                ld.style.display = 'none';
                U.clearOpacity(ld);
                if (cb) cb();
            }

            if (anim)
                U.animate(ld, 'opacity', 0, S.options.fadeDuration, fn);
            else
                fn();
        }
    }

    /**
    * Builds the content for the title and information bars.
    *
    * @param   Function    cb      A callback function to execute after the
    *                              bars are built
    * @return  void
    * @private
    */
    function buildBars(cb)
    {
        var obj = S.getCurrent();

        // build the title, if present
        U.get('sb-title-inner').innerHTML = obj.title || '';

        // build the nav
        var c, n, pl, pa, p, sep;
        if (S.options.displayNav)
        {
            c = true;
            // next & previous links
            var len = S.gallery.length;
            if (len > 1)
            {
                if (S.options.continuous)
                    n = p = true; // show both
                else
                {
                    n = (len - 1) > S.current; // not last in gallery, show next
                    p = S.current > 0; // not first in gallery, show previous
                }

                sep = true;
            }
            // in a slideshow?
            if (S.options.slideshowDelay > 0 && S.hasNext())
            {
                pa = !S.isPaused();
                pl = !pa;
            }
        } else
        {
            c = n = pl = pa = p = sep = false;
        }
        toggleNav('close', c);
        toggleNav('next', n);
        toggleNav('play', pl);
        toggleNav('pause', pa);
        toggleNav('previous', p);
        toggleNav('seperator', sep);

        // build the counter
        var c = '';
        if (S.options.displayCounter && S.gallery.length > 1)
        {
            var count = S.getCounter();
            if (typeof count == 'string') // default
                c = count;
            else
            {
                U.each(count, function(i)
                {
                    c += '<a onclick="Shadowbox.change(' + i + ');"'
                    if (i == S.current) c += ' class="sb-counter-current"';
                    c += '>' + (i + 1) + '</a>';
                });
            }
        }
        U.get('sb-counter').innerHTML = c;

        cb();
    }

    /**
    * Hides the title and info bars.
    *
    * @param   Boolean     anim    True to animate the transition
    * @param   Function    cb      A callback function to execute after the
    *                              animation completes
    * @return  void
    * @private
    */
    function hideBars(anim, cb)
    {
        var sw = U.get('sb-wrapper'),
            st = U.get('sb-title'),
            si = U.get('sb-info'),
            ti = U.get('sb-title-inner'),
            ii = U.get('sb-info-inner'),
            t = parseInt(S.lib.getStyle(ti, 'height')) || 0,
            b = parseInt(S.lib.getStyle(ii, 'height')) || 0;

        function fn()
        {
            // hide bars here in case of overflow, build after hidden
            ti.style.visibility = ii.style.visibility = 'hidden';
            buildBars(cb);
        }

        if (anim)
        {
            U.animate(st, 'height', 0, 0.35);
            U.animate(si, 'height', 0, 0.35);
            U.animate(sw, 'paddingTop', t, 0.35);
            U.animate(sw, 'paddingBottom', b, 0.35, fn);
        } else
        {
            st.style.height = si.style.height = '0px';
            sw.style.paddingTop = t + 'px';
            sw.style.paddingBottom = b + 'px';
            fn();
        }
    }

    /**
    * Shows the title and info bars.
    *
    * @param   Function    cb      A callback function to execute after the
    *                              animation completes
    * @return  void
    * @private
    */
    function showBars(cb)
    {
        var sw = U.get('sb-wrapper'),
            st = U.get('sb-title'),
            si = U.get('sb-info'),
            ti = U.get('sb-title-inner'),
            ii = U.get('sb-info-inner'),
            t = parseInt(S.lib.getStyle(ti, 'height')) || 40,
            b = parseInt(S.lib.getStyle(ii, 'height')) || 40;

        // clear visibility before animating into view
        ti.style.visibility = ii.style.visibility = '';

        // Always show the title!
        U.animate(st, 'height', t, 0.35);
        U.animate(sw, 'paddingTop', 0, 0.35);
        U.animate(si, 'height', b, 0.35);
        U.animate(sw, 'paddingBottom', 0, 0.35, cb);
    }

    /**
    * Adjusts the height of #sb-body and centers #sb-wrapper vertically
    * in the viewport.
    *
    * @param   Number      height      The height to use for #sb-body
    * @param   Number      top         The top to use for #sb-wrapper
    * @param   Boolean     anim        True to animate the transition
    * @param   Function    cb          A callback to use when the animation
    *                                  completes
    * @return  void
    * @private
    */
    function adjustHeight(height, top, anim, cb)
    {
        var sb = U.get('sb-body'),
            s = U.get('sb-wrapper'),
            h = parseInt(height),
            t = parseInt(top);

        if (anim)
        {
            U.animate(sb, 'height', h, S.options.resizeDuration);
            U.animate(s, 'top', t, S.options.resizeDuration, cb);
        } else
        {
            sb.style.height = h + 'px';
            s.style.top = t + 'px';
            if (cb) cb();
        }
    }

    /**
    * Adjusts the width and left of #sb-wrapper.
    *
    * @param   Number      width       The width to use for #sb-wrapper
    * @param   Number      left        The left to use for #sb-wrapper
    * @param   Boolean     anim        True to animate the transition
    * @param   Function    cb          A callback to use when the animation
    *                                  completes
    * @return  void
    * @private
    */
    function adjustWidth(width, left, anim, cb)
    {
        var s = U.get('sb-wrapper'),
            w = parseInt(width),
            l = parseInt(left);

        if (anim)
        {
            U.animate(s, 'width', w, S.options.resizeDuration);
            U.animate(s, 'left', l, S.options.resizeDuration, cb);
        } else
        {
            s.style.width = w + 'px';
            s.style.left = l + 'px';
            if (cb) cb();
        }
    }

    /**
    * Resizes Shadowbox to the appropriate height and width for the current
    * content.
    *
    * @param   Function    cb      A callback function to execute after the
    *                              resize completes
    * @return  void
    * @private
    */
    function resizeContent(cb)
    {
        var c = S.content;
        if (!c) return;

        // set new dimensions
        var d = setDimensions(c.height, c.width, c.resizable);

        switch (S.options.animSequence)
        {
            case 'hw':
                adjustHeight(d.inner_h, d.top, true, function()
                {
                    adjustWidth(d.width, d.left, true, cb);
                });
                break;
            case 'wh':
                adjustWidth(d.width, d.left, true, function()
                {
                    adjustHeight(d.inner_h, d.top, true, cb);
                });
                break;
            default: // sync
                adjustWidth(d.width, d.left, true);
                adjustHeight(d.inner_h, d.top, true, cb);
        }
    }

    /**
    * Calculates the dimensions for Shadowbox, taking into account the borders
    * and surrounding elements of #sb-body.
    *
    * @param   Number      height      The content height
    * @param   Number      width       The content width
    * @param   Boolean     resizable   True if the content is able to be
    *                                  resized. Defaults to false
    * @return  Object                  The new dimensions object
    * @private
    */
    function setDimensions(height, width, resizable)
    {
        var sbi = U.get('sb-body-inner')
        sw = U.get('sb-wrapper'),
            so = U.get('sb-overlay'),
            tb = sw.offsetHeight - sbi.offsetHeight,
            lr = sw.offsetWidth - sbi.offsetWidth,
            max_h = so.offsetHeight, // measure overlay to get viewport size for IE6
            max_w = so.offsetWidth;

        return S.setDimensions(height, width, max_h, max_w, tb, lr, resizable);
    }

    return {

        /**
        * The HTML markup to use.
        *
        * @var     String
        * @public
        */
        markup: '<div id="sb-container">' +
                    '<div id="sb-overlay"></div>' +
                    '<div id="sb-wrapper">' +
                        '<div id="sb-title">' +
                            '<div class="topNav"><a id="sb-nav-close" title="Close" onclick="Shadowbox.close()">Close X</a></div>' +
                            '<div id="sb-title-inner"></div>' +
                        '</div>' +
                        '<div id="sb-body">' +
                            '<div id="sb-body-inner"></div>' +
                            '<div id="sb-loading">' +
                                '<div id="shadowbox_loading_indicator"></div>' +
                                '<div>Loading...</div>' +
                                '<div><a onclick="Shadowbox.close();">(Click here to cancel)</a></div>' +
                            '</div>' +
                        '</div>' +
                        '<div id="sb-info">' +
                            '<div id="sb-info-inner">' +
                                '<div id="sb-counter"></div>' +
                                '<div id="sb-nav">' +
                                    '<div style="text-align: center">' +
                                        '<a id="sb-nav-previous" title="Previous" onclick="Shadowbox.previous()">&lt;&nbsp;Prev</a>' +
                                        '<span id="sb-nav-seperator">&nbsp;&nbsp;|&nbsp;&nbsp;</span>' +
                                        '<a id="sb-nav-next" title="Next" onclick="Shadowbox.next()">Next&nbsp;&gt;</a>' +
                                    '</div>' +
                                '</div>' +
                                '<div style="clear:both"></div>' +
                            '</div>' +
                        '</div>' +
                    '</div>' +
                '</div>',

        options: {

            /**
            * Determines the sequence of the resizing animations. A value of
            * "hw" will resize first the height, then the width. Likewise, "wh"
            * will resize the width first, then the height. The default is
            * "sync" and will resize both simultaneously.
            *
            * @var     String
            * @public
            */
            animSequence: 'sync'

        },

        /**
        * Initialization function. Called immediately after this skin's markup
        * has been appended to the document with all of the necessary language
        * replacements done.
        *
        * @return  void
        * @public
        */
        init: function()
        {
            // several fixes for IE6
            if (S.client.isIE6)
            {
                // trigger hasLayout on sb-body
                U.get('sb-body').style.zoom = 1;

                // support transparent PNG's via AlphaImageLoader
                var el, m, re = /url\("(.*\.png)"\)/;
                U.each(png, function(id)
                {
                    el = U.get(id);
                    if (el)
                    {
                        m = S.lib.getStyle(el, 'backgroundImage').match(re);
                        if (m)
                        {
                            el.style.backgroundImage = 'none';
                            el.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,src=' +
                                m[1] + ',sizingMethod=scale);';
                        }
                    }
                });
            }
        },

        /**
        * Gets the element that content should be appended to.
        *
        * @return  HTMLElement     The body element
        * @public
        */
        bodyEl: function()
        {
            return U.get('sb-body-inner');
        },

        /**
        * Called when Shadowbox opens from an inactive state.
        *
        * @param   Number      h       The initial height to use
        * @param   Number      w       The initial width to use
        * @param   Function    cb      The function to call when finished
        * @return  void
        * @public
        */
        onOpen: function(h, w, cb)
        {
            U.get('sb-container').style.display = 'block';

            var d = setDimensions(h, w);
            adjustHeight(d.inner_h, d.top, false);
            adjustWidth(d.width, d.left, false);
            toggleVisible(cb);
        },

        /**
        * Called when a new piece of content is being loaded.
        *
        * @param   mixed       content     The content object
        * @param   Boolean     change      True if the content is changing
        *                                  from some previous content
        * @param   Function    cb          A callback that should be fired when
        *                                  this function is finished
        * @return  void
        * @public
        */
        onLoad: function(content, change, cb)
        {
            toggleLoading(true);

            hideBars(change, function()
            { // if changing, animate the bars transition
                if (!content) return;

                // if opening, clear #sb-wrapper display
                if (!change) U.get('sb-wrapper').style.display = '';

                cb();
            });
        },

        /**
        * Called when the content is ready to be loaded (e.g. when the image
        * has finished loading). Should resize the content box and make any
        * other necessary adjustments.
        *
        * @param   Function    cb          A callback that should be fired when
        *                                  this function is finished
        * @return  void
        * @public
        */
        onReady: function(cb)
        {
            resizeContent(function()
            {
                showBars(cb);
            });
        },

        /**
        * Called when the content is loaded into the box and is ready to be
        * displayed.
        *
        * @param   Function    cb          A callback that should be fired when
        *                                  this function is finished
        * @return  void
        * @public
        */
        onFinish: function(cb)
        {
            toggleLoading(false, cb);
        },

        /**
        * Called when Shadowbox is closed.
        *
        * @return  void
        * @public
        */
        onClose: function()
        {
            toggleVisible(false);
        },

        /**
        * Called in Shadowbox.play().
        *
        * @return  void
        * @public
        */
        onPlay: function()
        {
            toggleNav('play', false);
            toggleNav('pause', true);
        },

        /**
        * Called in Shadowbox.pause().
        *
        * @return  void
        * @public
        */
        onPause: function()
        {
            toggleNav('pause', false);
            toggleNav('play', true);
        },

        /**
        * Called when the window is resized.
        *
        * @return  void
        * @public
        */
        onWindowResize: function()
        {
            var c = S.content;
            if (!c) return;

            // set new dimensions
            var d = setDimensions(c.height, c.width, c.resizable);

            adjustWidth(d.width, d.left, false);
            adjustHeight(d.inner_h, d.top, false);

            var el = U.get(S.contentId());
            if (el)
            {
                // resize resizable content when in resize mode
                if (c.resizable && S.options.handleOversize == 'resize')
                {
                    el.height = d.resize_h;
                    el.width = d.resize_w;
                }
            }
        }

    };

} ();

function shadowbox_initialise(a, b, c)
{ 
    //Do Nothing.
}