//  ###########################################################################################################################
//
// BEN: Added this whole block to be able to initialise the lightbox BEFORE loading of ALL page-content is finished
//
// written by Dean Edwards, 2005
// with input from Tino Zijdel, Matthias Miller, Diego Perini
// http://dean.edwards.name/weblog/2005/10/add-event/
// 2007-07-10 TKO - Removed check for body in schedule because of problems with Firefox 2.0

function addEvent(element, type, handler) {
    // Modification by Tanny O'Haley, http://tanny.ica.com to add the
    // DOMContentLoaded for all browsers.
    if (type == "DOMContentLoaded" || type == "domload") {
        addDOMLoadEvent(handler);
        return;
    }
	
    if (element.addEventListener) {
        element.addEventListener(type, handler, false);
    } else {
        // assign each event handler a unique ID
        if (!handler.$$guid) {
            handler.$$guid = addEvent.guid++;
        }
        // create a hash table of event types for the element
        if (!element.events) {
            element.events = {};
        }
        // create a hash table of event handlers for each element/event pair
        var handlers = element.events[type];
        if (!handlers) {
            handlers = element.events[type] = {};
            // store the existing event handler (if there is one)
            if (element["on" + type]) {
                handlers[0] = element["on" + type];
            }
        }
        // store the event handler in the hash table
        handlers[handler.$$guid] = handler;
        // assign a global event handler to do all the work
        element["on" + type] = handleEvent;
    }
};
// a counter used to create unique IDs
addEvent.guid = 1;

function removeEvent(element, type, handler) {
    if (element.removeEventListener) {
        element.removeEventListener(type, handler, false);
    } else {
        // delete the event handler from the hash table
        if (element.events && element.events[type]) {
            delete element.events[type][handler.$$guid];
        }
    }
};

function handleEvent(event) {
    var returnValue = true;
    // grab the event object (IE uses a global event object)
    event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
    // get a reference to the hash table of event handlers
    var handlers = this.events[event.type];
    // execute each event handler
    for (var i in handlers) {
        this.$$handleEvent = handlers[i];
        if (this.$$handleEvent(event) === false) {
            returnValue = false;
        }
    }
    return returnValue;
};

function fixEvent(event) {
    // add W3C standard event methods
    event.preventDefault = fixEvent.preventDefault;
    event.stopPropagation = fixEvent.stopPropagation;
    return event;
};
fixEvent.preventDefault = function() {
    this.returnValue = false;
};
fixEvent.stopPropagation = function() {
    this.cancelBubble = true;
};

// End Dean Edwards addEvent.

// Tino Zijdel - crisp@xs4all.nl This little snippet fixes the problem that the onload attribute on 
// the body-element will overwrite previous attached events on the window object for the onload event.
if (!window.addEventListener) {
    document.onreadystatechange = function(){
        if (window.onload && window.onload != handleEvent) {
            addEvent(window, 'load', window.onload);
            window.onload = handleEvent;
        }
    }
}

// Here are my functions for adding the DOMContentLoaded event to browsers other
// than Mozilla.

// Array of DOMContentLoaded event handlers.
window.onDOMLoadEvents = new Array();
window.DOMContentLoadedInitDone = false;

// Function that adds DOMContentLoaded listeners to the array.
function addDOMLoadEvent(listener) {
    window.onDOMLoadEvents[window.onDOMLoadEvents.length]=listener;
}

// Function to process the DOMContentLoaded events array.
function DOMContentLoadedInit() {
    // quit if this function has already been called
    if (window.DOMContentLoadedInitDone) {
        return;
    }

    // flag this function so we don't do the same thing twice
    window.DOMContentLoadedInitDone = true;

    // iterates through array of registered functions
    for (var i=0; i<window.onDOMLoadEvents.length; i++) {
        var func = window.onDOMLoadEvents[i];
        func();
    }
}

function DOMContentLoadedScheduler() {
    // quit if the init function has already been called
    if (window.DOMContentLoadedInitDone) {
        return true;
    }
	
    // First, check for Safari or KHTML.
    // Second, check for IE.

    //if DOM methods are supported, and the body element exists
    //(using a double-check including document.body, for the benefit of older moz builds [eg ns7.1]
    //in which getElementsByTagName('body')[0] is undefined, unless this script is in the body section)
    if(/KHTML|WebKit/i.test(navigator.userAgent)) {
        if(/loaded|complete/.test(document.readyState)) {
            DOMContentLoadedInit();
        } else {
            // Not ready yet, wait a little more.
            setTimeout("DOMContentLoadedScheduler()", 250);
        }
    } else if(document.getElementById("__ie_onload")) {
        return true;
    }

    // Check for custom developer provided function.
    if(typeof DOMContentLoadedCustom == "function") {
        if(typeof document.getElementsByTagName != 'undefined' && (document.getElementsByTagName('body')[0] != null || document.body != null)) {
            // Call custom function.
            if(DOMContentLoadedCustom()) {
                DOMContentLoadedInit();
            } else {
                // Not ready yet, wait a little more.
                setTimeout("DOMContentLoadedScheduler()", 250);
            }
        }
    }
    return true;
}

// Schedule to run the init function.
setTimeout("DOMContentLoadedScheduler()", 250);

// Just in case window.onload happens first, add it there too.
addEvent(window, "load", DOMContentLoadedInit);

// If addEventListener supports the DOMContentLoaded event.
if(document.addEventListener) {
    document.addEventListener("DOMContentLoaded", DOMContentLoadedInit, false);
}

/* for Internet Explorer */
if (navigator.appName == "Microsoft Internet Explorer") {
    document.write("<script id=__ie_onload defer src=\"//:\"><\/script>");
    var script = document.getElementById("__ie_onload");
    script.onreadystatechange = function() {
        if (this.readyState == "complete") {
            DOMContentLoadedInit(); // call the onload handler
        }
    };
}
//  ###########################################################################################################################

// -----------------------------------------------------------------------------------
//
//	Lightbox v2.03.3
//	by Lokesh Dhakar - http://www.huddletogether.com
//	5/21/06
//
//	For more information on this script, visit:
//	http://huddletogether.com/projects/lightbox2/
//
//	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
//	
//	Credit also due to those who have helped, inspired, and made their code available to the public.
//	Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), Thomas Fuchs(mir.aculo.us), and others.
//
//  ###########################################################################################################################
//
//  BEN: Modified for better integration with a CMS
//  Added options to save the displayed image as well as a presentation mode
//  Added a slideshow option (inspired by LyteBox v3.20, Markus F. Hay, http://www.dolem.com/lytebox)
//  VERY MANY THANKS to Lokesh Dhakar for the basic script!
//
//  ###########################################################################################################################
//
// -----------------------------------------------------------------------------------
/*

	Table of Contents
	-----------------
	Configuration
	Global Variables

	Extending Built-in Objects	
	- Object.extend(Element)
	- Array.prototype.removeDuplicates()
	- Array.prototype.empty()

	Lightbox Class Declaration
	- initialize()
	- updateImageList()
	- start()
	- changeImage()
	- resizeImageContainer()
	- showImage()
	- updateDetails()
	- updateNav()
	// ###########################################################################################################################
	- updatePresentationNav()
	- startSlideshow()
	- stopSlideshow()
	// ###########################################################################################################################
	- enableKeyboardNav()
	- disableKeyboardNav()
	- keyboardAction()
	- preloadNeighborImages()
	- end()
	
	Miscellaneous Functions
	- getPageScroll()
	- getPageSize()
	- getKey()
	- listenKey()
	- showSelectBoxes()
	- hideSelectBoxes()
	- showFlash()
	- hideFlash()
	- pause()
	- initLightbox()
	
	Function Calls
	- addLoadEvent(initLightbox)
	
*/
// -----------------------------------------------------------------------------------

//
//	Configuration
//
// ###########################################################################################################################
//
// BEN: Out here. In css now.
// var fileLoadingImage = "img/loading.gif";		
// var fileBottomNavCloseImage = "img/closelabel.gif";
// ###########################################################################################################################

var overlayOpacity = 0.8; // Controls transparency of shadow overlay

var animate = false; // Toggles resizing animations
var resizeSpeed = 0; // Controls the speed of the image resizing animations (in milliseconds)

var borderSize = 10; // If you adjust the padding in the CSS, you will need to update this variable


// ###########################################################################################################################
//
// BEN: Adding vars for localisation and presentation mode, added prev-, and nextLink-images here.
// Added var to allow saving of images and appropriate button.
// Added slideshow option and vars.
//
var lllImage = 'Aufbau und Planung';
var lllOf = 'of';

var presentationMode; //Set during link-parsing

var allowSave = false;

var slideshowEnabled; // Set during link-parsing
var enableSlideshowAutoplay = false; // Is a slideshow active from the start?
var slideshowInterval = 5000; // Time in milliseconds before the images change during a slideshow
var slideshowAutoclose = false; // Should the lightbox be closed when the slideshow reaches the last image?
// ###########################################################################################################################


// -----------------------------------------------------------------------------------

//
//	Global Variables
//
var imageArray = new Array;
var activeImage;

// ###########################################################################################################################
//
// BEN: Adding vars for the slideshow
//
var slideshowActive; // Set during link-parsing
var slideshowIDArray = new Array();
var slideshowIDCount = 0;
// ###########################################################################################################################

// -----------------------------------------------------------------------------------

//
//	Additional methods for Element added by SU, Couloir
//	- further additions by Lokesh Dhakar (huddletogether.com)
//
Object.extend(Element, {
    getWidth: function(element) {
        element = $(element);
        return element.offsetWidth;
    },
    setWidth: function(element,w) {
        element = $(element);
        element.style.width = w +"px";
    },
    setHeight: function(element,h) {
        element = $(element);
        element.style.height = h +"px";
    },
    setTop: function(element,t) {
        element = $(element);
        element.style.top = t +"px";
    },
    setLeft: function(element,l) {
        element = $(element);
        element.style.left = l +"px";
    },
    setSrc: function(element,src) {
        element = $(element);
        element.src = src;
    },
    setHref: function(element,href) {
        element = $(element);
        element.href = href;
    },
    setInnerHTML: function(element,content) {
        element = $(element);
        element.innerHTML = content;
    }
});

// -----------------------------------------------------------------------------------

//
//	Extending built-in Array object
//	- array.removeDuplicates()
//	- array.empty()
//
// BEN: Theres a prototype method that can do this!
/*Array.prototype.removeDuplicates = function () {
    for(i = 0; i < this.length; i++){
        for(j = this.length-1; j>i; j--){        
            if(this[i][0] == this[j][0]){
                this.splice(j,1);
            }
        }
    }
}*/

// -----------------------------------------------------------------------------------

// BEN: Seems that this is not used in the whole script!!!
/*Array.prototype.empty = function () {
	for(i = 0; i <= this.length; i++){
		this.shift();
	}
}*/

// -----------------------------------------------------------------------------------

//
//	Lightbox Class Declaration
//	- initialize()
//	- start()
//	- changeImage()
//	- resizeImageContainer()
//	- showImage()
//	- updateDetails()
//	- updateNav()
//  ###########################################################################################################################
//  - updatePresentationNav()
//  - startSlideshow()
//  - stopSlideshow()
//  ###########################################################################################################################
//	- enableKeyboardNav()
//	- disableKeyboardNav()
//	- keyboardNavAction()
//	- preloadNeighborImages()
//	- end()
//
//	Structuring of code inspired by Scott Upton (http://www.uptonic.com/)
//
var Lightbox = Class.create();

Lightbox.prototype = {
	
    // initialize()
    // Constructor runs on completion of the DOM loading. Calls updateImageList and then
    // the function inserts html at the bottom of the page which is used to display the shadow
    // overlay and the image container.
    //
    initialize: function() {
			
        // ###########################################################################################################################
        //
        // BEN: This was originally under "Global Variables" but it needs to be here so that it's not overwritten via inline scripts!
        // NOTE: resizeSpeed was changed to be passed in ms, so we need to recalculate a bit here... (for compatibility with slimbox vars!)
        //
        if(animate == true){
            //overlayDuration = 0.2;	// shadow fade in/out duration
            //if(resizeSpeed > 10){ resizeSpeed = 10;}
            //if(resizeSpeed < 1){ resizeSpeed = 1;}
            //resizeDuration = (11 - resizeSpeed) * 0.15;
            overlayDuration = resizeSpeed/1000;
            resizeDuration = resizeSpeed/1000;
        } else {
            overlayDuration = 0;
            resizeDuration = 0;
        }
        // ###########################################################################################################################
		
        this.updateImageList();

        // Code inserts html at the bottom of the page that looks similar to this:
        //      <div id=lightclose>
        //	<div id="overlay"  onclick="show_info('show_aktuell')"></div>
        //	<div id="lightbox">
        //		<div id="outerImageContainer">
        //			<div id="imageContainer">
        //				<img id="lightboxImage">
        //				<div style="" id="hoverNav">
        //					<a href="#" id="prevLink"></a>
        //					<a href="#" id="nextLink"></a>
        //				</div>
        //				<div id="loading">
        //					<a href="#" id="loadingLink">
        //						<img src="images/loading.gif">
        //					</a>
        //				</div>
        //			</div>
        //		</div>
        //		<div id="imageDataContainer">
        //			<div id="imageData">
        //				<div id="imageDetails">
        //					<span id="caption"></span>
        //					<span id="numberDisplay"></span>
        //				</div>
        //				<div id="bottomNav">
        //					<a href="#" id="bottomNavClose">
        //						<img src="images/close.gif">
        //					</a>
        //				</div>
        //			</div>
        //		</div>
        //	</div>
        //  </div>


        var objBody = document.getElementsByTagName("body").item(0);

        var objOverlay = document.createElement("div");
        objOverlay.setAttribute('id','overlay');
        objOverlay.style.display = 'none';
        objOverlay.onclick = function() {
            var MyId = document.getElementById("show_aktuell");
            if (MyId != undefined) {
               document.getElementById("show_aktuell").style.display = 'none';
            } else {
                
            }
            myLightbox.end();          
            
        }
        objBody.appendChild(objOverlay);
		
        var objLightbox = document.createElement("div");
        objLightbox.setAttribute('id','lbLightbox');
        objLightbox.style.display = 'none';
        objLightbox.onclick = function(e) {	// close Lightbox is user clicks shadow overlay
           if (!e) var e = window.event;
            var clickObj = Event.element(e).id;
            if ( clickObj == 'lbLightbox') {                
                myLightbox.end();
            }
        };
        objBody.appendChild(objLightbox);
			
        var objOuterImageContainer = document.createElement("div");
        objOuterImageContainer.setAttribute('id','lbOuterImageContainer');
        objLightbox.appendChild(objOuterImageContainer);

        // When Lightbox starts it will resize itself from 250 by 250 to the current image dimension.
        // If animations are turned off, it will be hidden as to prevent a flicker of a
        // white 250 by 250 box.
        if(animate){
            Element.setWidth('lbOuterImageContainer', 250);
            Element.setHeight('lbOuterImageContainer', 250);
        } else {
            Element.setWidth('lbOuterImageContainer', 1);
            Element.setHeight('lbOuterImageContainer', 1);
        }

        var objImageContainer = document.createElement("div");
        objImageContainer.setAttribute('id','lbImageContainer');
        objOuterImageContainer.appendChild(objImageContainer);
	
        var objLightboxImage = document.createElement("img");
        objLightboxImage.setAttribute('id','lightboxImage');
        objImageContainer.appendChild(objLightboxImage);
	
        var objHoverNav = document.createElement("div");
        objHoverNav.setAttribute('id','lbHoverNav');
        objImageContainer.appendChild(objHoverNav);
	
        var objPrevLink = document.createElement("a");
        objPrevLink.setAttribute('id','prevLink');
        objPrevLink.setAttribute('href','#');
        objHoverNav.appendChild(objPrevLink);
		
        var objNextLink = document.createElement("a");
        objNextLink.setAttribute('id','nextLink');
        objNextLink.setAttribute('href','#');
        objHoverNav.appendChild(objNextLink);
		
        var objLoading = document.createElement("div");
        objLoading.setAttribute('id','lbLoading');
        objImageContainer.appendChild(objLoading);
	
        var objLoadingLink = document.createElement("a");
        objLoadingLink.setAttribute('id','loadingLink');
        objLoadingLink.setAttribute('href','#');
        objLoadingLink.onclick = function() {
            myLightbox.end(); return false;
        }
        objLoading.appendChild(objLoadingLink);

        var objImageDataContainer = document.createElement("div");
        objImageDataContainer.setAttribute('id','lbImageDataContainer');
        objLightbox.appendChild(objImageDataContainer);

        var objImageData = document.createElement("div");
        objImageData.setAttribute('id','lbImageData');
        objImageDataContainer.appendChild(objImageData);
	
        var objImageDetails = document.createElement("div");
        objImageDetails.setAttribute('id','lbImageDetails');
        objImageData.appendChild(objImageDetails);
	
        var objCaption = document.createElement("span");
        objCaption.setAttribute('id','lbCaption');
        objImageDetails.appendChild(objCaption);
	
        var objNumberDisplay = document.createElement("span");
        objNumberDisplay.setAttribute('id','lbNumber');
        objImageDetails.appendChild(objNumberDisplay);
		
        // ###########################################################################################################################
        //
        // BEN: Adding element for the display of presentation mode
        //
        var objPresentMode = document.createElement("span");
        objPresentMode.setAttribute('id','lbPresent');
        objImageDetails.appendChild(objPresentMode);
        // ###########################################################################################################################
		
        var objBottomNav = document.createElement("div");
        objBottomNav.setAttribute('id','bottomNav');
        objImageData.appendChild(objBottomNav);
		
        // ###########################################################################################################################
        //
        // BEN: Adding play/pause buttons for the slideshow
        //
        var objBottomNavPlayLink = document.createElement("a");
        objBottomNavPlayLink.setAttribute('id','playLink');
        objBottomNavPlayLink.setAttribute('href','#');
        objBottomNavPlayLink.onclick = function() {
            myLightbox.startSlideshow(); return false;
        }
        objBottomNav.appendChild(objBottomNavPlayLink);
		
        var objBottomNavPauseLink = document.createElement("a");
        objBottomNavPauseLink.setAttribute('id','pauseLink');
        objBottomNavPauseLink.setAttribute('href','#');
        objBottomNavPauseLink.onclick = function() {
            myLightbox.stopSlideshow(); return false;
        }
        objBottomNav.appendChild(objBottomNavPauseLink);
        // ###########################################################################################################################
		
        // ###########################################################################################################################
        //
        // BEN: Adding a save-button if saving is allowed
        //
        if (allowSave) {
            var objBottomNavSaveLink = document.createElement("a");
            objBottomNavSaveLink.setAttribute('id','saveLink');
            objBottomNavSaveLink.setAttribute('target','_blank');
            objBottomNav.appendChild(objBottomNavSaveLink);
        }
        // ###########################################################################################################################
		
        var objBottomNavCloseLink = document.createElement("a");
        objBottomNavCloseLink.setAttribute('id','closeLink');
        objBottomNavCloseLink.setAttribute('href','#');
        objBottomNavCloseLink.onclick = function() {
            myLightbox.end(); return false;
        }
        objBottomNav.appendChild(objBottomNavCloseLink);
    },


    //
    // updateImageList()
    // Loops through anchor tags looking for 'lightbox' references and applies onclick
    // events to appropriate links. You can rerun after dynamically adding images w/ajax.
    //
    updateImageList: function() {
        if (!document.getElementsByTagName){
            return;
        }
        var anchors = document.getElementsByTagName('a');
        var areas = document.getElementsByTagName('area');

        // loop through all anchor tags
        for (var i=0; i<anchors.length; i++){
            var anchor = anchors[i];
			
            var relAttribute = String(anchor.getAttribute('rel'));
			
            // use the string.match() method to catch 'lightbox' references in the rel attribute
            if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
                anchor.onclick = function () {
                    myLightbox.start(this); return false;
                }
            }
        }

        // loop through all area tags
        // todo: combine anchor & area tag loops
        for (var i=0; i< areas.length; i++){
            var area = areas[i];
			
            var relAttribute = String(area.getAttribute('rel'));
			
            // use the string.match() method to catch 'lightbox' references in the rel attribute
            if (area.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
                area.onclick = function () {
                    myLightbox.start(this); return false;
                }
            }
        }
    },
	
	
    //
    //	start()
    //	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
    //
    start: function(imageLink) {
		
        hideSelectBoxes();
        hideFlash();

        // stretch overlay to fill page and fade in
        var arrayPageSize = getPageSize();
		
        // ###########################################################################################################################
        // BEN: The setting of the width is not necessary as it's set to 100% in css. If user resizes browser during lightshow it breaks.
        //Element.setWidth('overlay', arrayPageSize[0]);
        Element.setHeight('overlay', arrayPageSize[1]);
        // ###########################################################################################################################

        new Effect.Appear('overlay', {
            duration: overlayDuration,
            from: 0.0,
            to: overlayOpacity
        });

        imageArray = [];
        imageNum = 0;

        if (!document.getElementsByTagName){
            return;
        }
        var anchors = document.getElementsByTagName( imageLink.tagName);

        // if image is NOT part of a set..
        if((imageLink.getAttribute('rel') == 'lightbox')){
            // add single image to imageArray
            imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));
			
            // ###########################################################################################################################
            //
            // BEN: Make sure the presentation mode and/or slideshow is disabled for single images!
            //
            presentationMode = false;
            slideshowEnabled = false;
            slideshowActive = false;
            $('pauseLink').hide();
            $('playLink').hide();
        // ###########################################################################################################################
        } else {
            // if image is part of a set..

            // loop through anchors, find other images in set, and add them to imageArray
            for (var i=0; i<anchors.length; i++){
                var anchor = anchors[i];
                if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
                    imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title')));
                }
            }
			
            // ############### BEN: Changed this to the "normal" prototype function that exists for these things!
            // probably this is even not wanted!? Disable completely?
            //imageArray.removeDuplicates();
            //imageArray.uniq();
            while(imageArray[imageNum][0] != imageLink.getAttribute('href')) {
                imageNum++;
            }
			
            // ###########################################################################################################################
            //
            // BEN: Adding a search for 'present' here. If matched activate presentation mode otherwise reset to false
            // Added another search for 'slideshow' to activate slideshow
            //
            if(imageLink.getAttribute('rel').toLowerCase().match('present')){
                presentationMode = true;
            } else {
                presentationMode = false;
            }
            if(imageLink.getAttribute('rel').toLowerCase().match('slideshow')){
                slideshowEnabled = true;
                slideshowActive = enableSlideshowAutoplay;
            } else {
                slideshowEnabled = false;
                slideshowActive = false;
                $('pauseLink').hide();
                $('playLink').hide();
            }
        // ###########################################################################################################################
        }

        // calculate top and left offset for the lightbox
        var arrayPageScroll = getPageScroll();
        var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 10);
        var lightboxLeft = arrayPageScroll[0];
        Element.setTop('lbLightbox', lightboxTop);
        Element.setLeft('lbLightbox', lightboxLeft);
		
        $('lbLightbox').show();
		
        this.changeImage(imageNum);
    },

    //
    //	changeImage()
    //	Hide most elements and preload image in preparation for resizing image container.
    //
    changeImage: function(imageNum) {
		
        activeImage = imageNum;	// update global var

        // hide elements during transition
        if(animate){
            $('lbLoading').show();
        }
        $('lightboxImage').hide();
        $('lbHoverNav').hide();
        $('prevLink').hide();
        $('nextLink').hide();
        $('lbImageDataContainer').hide();
        $('lbNumber').hide();
		
        imgPreloader = new Image();
		
        // once image is preloaded, resize image container
        imgPreloader.onload=function(){
            Element.setSrc('lightboxImage', imageArray[activeImage][0]);
            myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
            // ###########################################################################################################################
            //
            // BEN: Adding link to image if saving is allowed
            //
            if (allowSave) {
                document.getElementById('saveLink').setAttribute('href',imageArray[activeImage][0]);
            }
            // ###########################################################################################################################
            imgPreloader.onload=function(){};	//	clear onLoad, IE behaves irratically with animated gifs otherwise
        }
        imgPreloader.src = imageArray[activeImage][0];
    },

    //
    //	resizeImageContainer()
    //
    resizeImageContainer: function( imgWidth, imgHeight) {

        // get curren width and height
        this.widthCurrent = Element.getWidth('lbOuterImageContainer');
        this.heightCurrent = Element.getHeight('lbOuterImageContainer');

        // get new width and height
        var widthNew = (imgWidth  + (borderSize * 2));
        var heightNew = (imgHeight  + (borderSize * 2));

        // scalars based on change from old to new
        this.xScale = ( widthNew / this.widthCurrent) * 100;
        this.yScale = ( heightNew / this.heightCurrent) * 100;

        // calculate size difference between new and old image, and resize if necessary
        wDiff = this.widthCurrent - widthNew;
        hDiff = this.heightCurrent - heightNew;

        if(!( hDiff == 0)){
            new Effect.Scale('lbOuterImageContainer', this.yScale, {
                scaleX: false,
                duration: resizeDuration,
                queue: 'front'
            });
        }
        if(!( wDiff == 0)){
            new Effect.Scale('lbOuterImageContainer', this.xScale, {
                scaleY: false,
                delay: resizeDuration,
                duration: resizeDuration
            });
        }

        // if new and old image are same size and no scaling transition is necessary,
        // do a quick pause to prevent image flicker.
        if((hDiff == 0) && (wDiff == 0)){
            if (navigator.appVersion.indexOf("MSIE")!=-1){
                pause(250);
            } else {
                pause(100);
            }
        }

        Element.setHeight('prevLink', imgHeight);
        Element.setHeight('nextLink', imgHeight);
        Element.setWidth( 'lbImageDataContainer', widthNew);

        this.showImage();
    },
	
    //
    //	showImage()
    //	Display image and begin preloading neighbors.
    //
    showImage: function(){
        $('lbLoading').hide();
        new Effect.Appear('lightboxImage', {
            duration: resizeDuration,
            queue: 'end',
            afterFinish: function(){
                myLightbox.updateDetails();
            }
        });
        // ###########################################################################################################################
        //
        // BEN: Adding slideshow options
        //
        if (slideshowActive) {
            // If last image in set...
            if(activeImage == (imageArray.length -1)){
                // ...either shut down the lightbox if configured to do so...
                if(slideshowAutoclose) {
                    slideshowIDArray[slideshowIDCount++] = setTimeout('myLightbox.end()',slideshowInterval+resizeSpeed*2);
                // ...or stop the slideshow
                } else {
                    myLightbox.stopSlideshow();
                }
            // If not last image in set, display next image in appropriate time
            } else {
                slideshowIDArray[slideshowIDCount++] = setTimeout('myLightbox.changeImage('+(activeImage+1)+')',slideshowInterval+resizeSpeed*2);
            }
        }
        // ###########################################################################################################################
        this.preloadNeighborImages();
    },

    //
    //	updateDetails()
    //	Display caption, image number, and bottom nav.
    //
    updateDetails: function() {
	
        // if caption is not null
        // if(imageArray[activeImage][1])
        if(imageArray[activeImage][1]){
            $('lbCaption').show();
            Element.setInnerHTML( 'lbCaption', imageArray[activeImage][1]);
            //Element.setInnerHTML( 'lbCaption', imageArray[document.images[1].name][1]);
            //document.write(document.images[0].name);
        } else {
            $('lbCaption').hide();            
        }
		
        // if image is part of set display 'Image x of x'
        if(imageArray.length > 0){
            $('lbNumber').show();
           // Element.setInnerHTML( 'lbNumber', " " + lllImage + " " + eval(activeImage + 1) + " " + lllOf + " " + imageArray.length);
          Element.setInnerHTML( 'lbNumber', " " + lllImage + "  " );
        }
		
        // ###########################################################################################################################
        //
        // BEN: Adding presentation mode
        // Added slideshow controls
        //
        if(presentationMode){
            // Hide numberDisplay again
            $('lbNumber').hide();
            myLightbox.updatePresentationNav();
        } else {
            $('lbPresent').hide();
        }
		
        if(slideshowEnabled) {
            if(slideshowActive) {
                $('playLink').hide();
                $('pauseLink').show();
            } else {
                $('pauseLink').hide();
                $('playLink').show();
            }
        }
        // ###########################################################################################################################

        new Effect.Parallel(
            [ new Effect.SlideDown( 'lbImageDataContainer', {
                sync: true,
                duration: resizeDuration,
                from: 0.0,
                to: 1.0
            }),
            new Effect.Appear('lbImageDataContainer', {
                sync: true,
                duration: resizeDuration
            }) ],

            {
                duration: resizeDuration,
                afterFinish: function() {
                    // update overlay size and update nav
                    var arrayPageSize = getPageSize();
                    Element.setHeight('overlay', arrayPageSize[1]);
                    myLightbox.updateNav();
                }
            }
            );
    },

    //
    //	updateNav()
    //	Display appropriate previous and next hover navigation.
    //
    updateNav: function() {

        $('lbHoverNav').show();

        // if not first image in set, display prev image button
        if(activeImage != 0){
            $('prevLink').show();
            // ###########################################################################################################################
            //
            //	BEN: Stop slideshow if user manually interrupts
            //
            if (!slideshowActive) {
                // No slideshow -> normal behaviour
                document.getElementById('prevLink').onclick = function() {
                    myLightbox.changeImage(activeImage - 1); return false;
                }
            } else {
                // Stop slideshow
                document.getElementById('prevLink').onclick = function() {
                    myLightbox.stopSlideshow();
                    myLightbox.changeImage(activeImage - 1);
                    return false;
                }
            }
        // ###########################################################################################################################
        }

        // if not last image in set, display next image button
        if(activeImage != (imageArray.length - 1)){
            $('nextLink').show();
            // ###########################################################################################################################
            //
            //	BEN: Stop slideshow if user manually interrupts
            //
            if (!slideshowActive) {
                // No slideshow -> normal behaviour
                document.getElementById('nextLink').onclick = function() {
                    myLightbox.changeImage(activeImage + 1); return false;
                }
            } else {
                // Stop slideshow
                document.getElementById('nextLink').onclick = function() {
                    myLightbox.stopSlideshow();
                    myLightbox.changeImage(activeImage + 1);
                    return false;
                }
            }
        }
		
        this.enableKeyboardNav();
    },
	
    // ###########################################################################################################################
    //
    // BEN: updatePresentationNav()
    // Display presentation mode navigation
    // Added support for slideshow
    //
    updatePresentationNav: function() {
        var content = '';
        for(var i=1; i<=(imageArray.length); i++){
            if((i-1) == activeImage){
                if(!slideshowActive){
                    content += '<a class="act" href="#" id="pmi'+i+'" onClick="myLightbox.changeImage('+(i-1)+'); return false;">'+i+'</a> ';
                } else {
                    content += '<a class="act" href="#" id="pmi'+i+'" onClick="myLightbox.stopSlideshow(); myLightbox.changeImage('+(i-1)+'); return false;">'+i+'</a> ';
                }
            } else {
                if (!slideshowActive){
                    content += '<a class="no" href="#" id="pmi'+i+'" onClick="myLightbox.changeImage('+(i-1)+'); return false;">'+i+'</a> ';
                } else {
                    content += '<a class="no" href="#" id="pmi'+i+'" onClick="myLightbox.stopSlideshow(); myLightbox.changeImage('+(i-1)+'); return false;">'+i+'</a> ';
                }
            }
        }
        $('lbPresent').show();
        Element.setInnerHTML( 'lbPresent', content);
    },
    // ###########################################################################################################################

    // ###########################################################################################################################
    //
    // BEN: startSlideshow()
    // Sets global var slideshow to true, changes to next image to initialise timeouts, if it's the last image shut down the lightbox or start again from the first image
    //
    startSlideshow: function() {
        if(activeImage != (imageArray.length - 1)){
            slideshowActive = true;
            myLightbox.changeImage(activeImage + 1);
        } else {
            if(slideshowAutoclose) {
                myLightbox.end();
            } else {
                slideshowActive = true;
                myLightbox.changeImage(0);
            }
        }
    },
    // ###########################################################################################################################

    // ###########################################################################################################################
    //
    // BEN: stopSlideshow()
    // Sets global var slideshow to false, clears all timeouts, toggles visibility of play/pause-buttons
    //
    stopSlideshow: function() {
        if(!slideshowActive){
            return false;
        }
        slideshowActive = false;
        for (var i=0;i<slideshowIDCount;i++) {
            window.clearTimeout(slideshowIDArray[i]);
        }
        $('pauseLink').hide();
        $('playLink').show();
    },
    // ###########################################################################################################################

    //
    //	enableKeyboardNav()
    //
    enableKeyboardNav: function() {
        document.onkeydown = this.keyboardAction;
    },

    //
    //	disableKeyboardNav()
    //
    disableKeyboardNav: function() {
        document.onkeydown = '';
    },

    //
    //	keyboardAction()
    //
    keyboardAction: function(e) {
        if (e == null) { // ie
            keycode = event.keyCode;
            escapeKey = 27;
        } else { // mozilla
            keycode = e.keyCode;
            escapeKey = e.DOM_VK_ESCAPE;
        }

        key = String.fromCharCode(keycode).toLowerCase();
		
        if((key == 'x') || (key == 'o') || (key == 'c') || (keycode == escapeKey)){	// close lightbox
            myLightbox.end();
        } else if((key == 'p') || (keycode == 37)){	// display previous image
            if(activeImage != 0){
                myLightbox.disableKeyboardNav();
                // ###########################################################################################################################
                //
                //	BEN: Stop slideshow if user manually interrupts
                //
                if(slideshowActive){
                    myLightbox.stopSlideshow();
                }
                // ###########################################################################################################################
                myLightbox.changeImage(activeImage - 1);
            }
        } else if((key == 'n') || (keycode == 39)){	// display next image
            if(activeImage != (imageArray.length - 1)){
                myLightbox.disableKeyboardNav();
                // ###########################################################################################################################
                //
                //	BEN: Stop slideshow if user manually interrupts
                //
                if(slideshowActive){
                    myLightbox.stopSlideshow();
                }
                // ###########################################################################################################################
                myLightbox.changeImage(activeImage + 1);
            }
        // ###########################################################################################################################
        //
        //	BEN: Adding keys for slideshow
        //
        } else if((key == 's') || (keycode == 83)){ // toggle slideshow on/off
            if(slideshowActive){
                myLightbox.stopSlideshow();
            } else {
                myLightbox.startSlideshow();
            }
        // ###########################################################################################################################
        }
    },

    //
    //	preloadNeighborImages()
    //	Preload previous and next images.
    //
    preloadNeighborImages: function(){

        if((imageArray.length - 1) > activeImage){
            preloadNextImage = new Image();
            preloadNextImage.src = imageArray[activeImage + 1][0];
        }
        if(activeImage > 0){
            preloadPrevImage = new Image();
            preloadPrevImage.src = imageArray[activeImage - 1][0];
        }
	
    },

    //
    //	end()
    //
    end: function() {
        this.disableKeyboardNav();
        $('lbLightbox').hide();
        new Effect.Fade('overlay', {
            duration: overlayDuration
        });
        showSelectBoxes();
        showFlash();
        // ###########################################################################################################################
        //
        //	BEN: If slideshow was active clear all timeouts
        //
        if (slideshowActive) {
            for (var i=0;i<slideshowIDCount;i++) {
                window.clearTimeout(slideshowIDArray[i]);
            }
            slideshowActive = false;
        }
    // ###########################################################################################################################
    }
}

// -----------------------------------------------------------------------------------

//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.com
//
function getPageScroll(){

    var xScroll, yScroll;

    if (self.pageYOffset) {
        yScroll = self.pageYOffset;
        xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
        yScroll = document.documentElement.scrollTop;
        xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
        yScroll = document.body.scrollTop;
        xScroll = document.body.scrollLeft;
    }

    arrayPageScroll = new Array(xScroll,yScroll)
    return arrayPageScroll;
}

// -----------------------------------------------------------------------------------

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.com
// Edit for Firefox by pHaez
//
function getPageSize(){
	
    var xScroll, yScroll;
	
    if (window.innerHeight && window.scrollMaxY) {
        xScroll = window.innerWidth + window.scrollMaxX;
        yScroll = window.innerHeight + window.scrollMaxY;
    } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
        xScroll = document.body.scrollWidth;
        yScroll = document.body.scrollHeight;
    } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
        xScroll = document.body.offsetWidth;
        yScroll = document.body.offsetHeight;
    }
	
    var windowWidth, windowHeight;
	
    //	console.log(self.innerWidth);
    //	console.log(document.documentElement.clientWidth);

    if (self.innerHeight) {	// all except Explorer
        if(document.documentElement.clientWidth){
            windowWidth = document.documentElement.clientWidth;
        } else {
            windowWidth = self.innerWidth;
        }
        windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
        windowWidth = document.documentElement.clientWidth;
        windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
        windowWidth = document.body.clientWidth;
        windowHeight = document.body.clientHeight;
    }
	
    // for small pages with total height less then height of the viewport
    if(yScroll < windowHeight){
        pageHeight = windowHeight;
    } else {
        pageHeight = yScroll;
    }

    //	console.log("xScroll " + xScroll)
    //	console.log("windowWidth " + windowWidth)

    // for small pages with total width less then width of the viewport
    if(xScroll < windowWidth){
        pageWidth = xScroll;
    } else {
        pageWidth = windowWidth;
    }
    //	console.log("pageWidth " + pageWidth)

    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
    return arrayPageSize;
}

// -----------------------------------------------------------------------------------

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//
function getKey(e){
    if (e == null) { // ie
        keycode = event.keyCode;
    } else { // mozilla
        keycode = e.which;
    }
    key = String.fromCharCode(keycode).toLowerCase();
	
    if(key == 'x'){
}
}

// -----------------------------------------------------------------------------------

//
// listenKey()
//
function listenKey () {	
    document.onkeypress = getKey;
}
	
// ---------------------------------------------------

function showSelectBoxes(){
    var selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
        selects[i].style.visibility = "visible";
    }
}

// ---------------------------------------------------

function hideSelectBoxes(){
    var selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
        selects[i].style.visibility = "hidden";
    }
}

// ---------------------------------------------------

function showFlash(){
    var flashObjects = document.getElementsByTagName("object");
    for (i = 0; i < flashObjects.length; i++) {
        flashObjects[i].style.visibility = "visible";
    }

    var flashEmbeds = document.getElementsByTagName("embed");
    for (i = 0; i < flashEmbeds.length; i++) {
        flashEmbeds[i].style.visibility = "visible";
    }
}

// ---------------------------------------------------

function hideFlash(){
    var flashObjects = document.getElementsByTagName("object");
    for (i = 0; i < flashObjects.length; i++) {
        flashObjects[i].style.visibility = "hidden";
    }

    var flashEmbeds = document.getElementsByTagName("embed");
    for (i = 0; i < flashEmbeds.length; i++) {
        flashEmbeds[i].style.visibility = "hidden";
    }

}


// ---------------------------------------------------

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Help from Ran Bar-On [ran2103@gmail.com]
//

function pause(ms){
    var date = new Date();
    curDate = null;
    do{
        var curDate = new Date();
    }
    while( curDate - date < ms);
}
/*
function pause(numberMillis) {
	var curently = new Date().getTime() + sender;
	while (new Date().getTime();	
}
*/
// ---------------------------------------------------



function initLightbox() { 
    myLightbox = new Lightbox();
}
//  ###########################################################################################################################
//
// BEN: This implements the very first block: initialise the lightbox when DOM is ready (which is much earlier than loading of the whole page)
//
//Event.observe(window, 'load', initLightbox, false);
addEvent(window,'DOMContentLoaded', initLightbox);
//  ###########################################################################################################################