// -----------------------------------------------------------------------------------
//
//	Lightbox v2.02
//	by Lokesh Dhakar - http://www.huddletogether.com
//	3/31/06
//
//	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.org), Thomas Fuchs(mir.aculo.us), and others.
//
//
// -----------------------------------------------------------------------------------
/*

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

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

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

//
//	Configuration
//
var fileLoadingImage = "/images/loading.gif";		
var fileCloseImage = "/images/closelabel.gif";
var filePrevImage = "/images/prevlabel.gif";
var fileNextImage = "/images/nextlabel.gif";

var resizeSpeed = 7;	// controls the speed of the image resizing (1=slowest and 10=fastest)

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

var videoController = true; // show the video controller on videos.
var videoControllerSize = 16; // size of the video controller.
var videoLoop = true; // set the video to loop after it plays.
var videoAutoplay = true; // set the video to begin playing automatically.

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

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

if(resizeSpeed > 10){ resizeSpeed = 10;}
if(resizeSpeed < 1){ resizeSpeed = 1;}
resizeDuration = (11 - resizeSpeed) * 0.15;

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

//
//	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";
	},
	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()
//
Array.prototype.removeDuplicates = function () {
	for(i = 1; i < this.length; i++){
		if(this[i][0] == this[i-1][0]){
			this.splice(i,1);
		}
	}
}

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

Array.prototype.empty = function () {
	for(i = 0; i <= this.length; i++){
		this.shift();
	}
}

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

//
//	Lightbox Class Declaration
//	- initialize()
//	- start()
//	- changeImage()
//	- resizeImageContainer()
//	- showImage()
//	- updateDetails()
//	- updateNav()
//	- 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. Loops through anchor tags looking for 
	// 'lightbox' references and applies onclick events to appropriate links. The 2nd section of
	// the function inserts html at the bottom of the page which is used to display the shadow 
	// overlay and the image container.
	//
	initialize: function() {	
		if (!document.getElementsByTagName){ return; }
		var anchors = document.getElementsByTagName('a');

		// 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;}
			}
		}

		// The rest of this code inserts html at the bottom of the page that looks similar to this:
		//
		//	<div id="overlay"></div>
		//	<div id="lightbox">
		//		<div id="outerImageContainer">
		//			<div id="imageContainer">
		//				<img id="lightboxImage">
		//				<div id="loading">
		//					<a href="#" id="loadingLink">
		//						<img src="lightbox2.02/js/images/loading.gif">
		//					</a>
		//				</div>
		//			</div>
		//	Added by Kevin Kilcher, kevin@kevinkilcher.com, 4/5/2007
		//			<div id="videoContainer">
		//				<div id="lightboxVideo"></div>
		//			</div>
		//		</div>
		// -----
		//		<div id="imageDataContainer">
		//			<div id="imageData">
		//				<div id="imageDetails">
		//					<span id="caption"></span>
		//					<span id="numberDisplay"></span>
		//				</div>
		//				<div id="bottomNavPrevNext">
		//					<a href="#" id="prevLink"></a>
		//					<a href="#" id="nextLink"></a>
		//				</div>
		//				<div id="bottomNav">
		//					<a href="#" id="bottomNavClose">
		//						<img src="lightbox2.02/js/images/close.gif">
		//					</a>
		//				</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() { myLightbox.end(); return false; }
		objBody.appendChild(objOverlay);
		
		var objLightbox = document.createElement("div");
		objLightbox.setAttribute('id','lightbox');
		objLightbox.style.display = 'none';
		objBody.appendChild(objLightbox);
	
		var objOuterImageContainer = document.createElement("div");
		objOuterImageContainer.setAttribute('id','outerImageContainer');
		objLightbox.appendChild(objOuterImageContainer);

		var objImageContainer = document.createElement("div");
		objImageContainer.setAttribute('id','imageContainer');
		objOuterImageContainer.appendChild(objImageContainer);
	
		var objLightboxImage = document.createElement("img");
		objLightboxImage.setAttribute('id','lightboxImage');
		objImageContainer.appendChild(objLightboxImage);
	
		// Added by Kevin Kilcher, kevin@kevinkilcher.com
		//	4/6/2007
		//	Elements to hold video.
		var objVideoContainer = document.createElement("div");
		objVideoContainer.setAttribute('id','videoContainer');
		objOuterImageContainer.appendChild(objVideoContainer);
	
		var objLightboxVideo = document.createElement("div");
		objLightboxVideo.setAttribute('id','lightboxVideo');
		objVideoContainer.appendChild(objLightboxVideo);
		// END Added by Kevin Kilcher -----

		var objLoading = document.createElement("div");
		objLoading.setAttribute('id','loading');
		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 objLoadingImage = document.createElement("img");
		objLoadingImage.setAttribute('src', fileLoadingImage);
		objLoadingLink.appendChild(objLoadingImage);

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

		var objImageData = document.createElement("div");
		objImageData.setAttribute('id','imageData');
		objImageDataContainer.appendChild(objImageData);
	
		var objBottomNav = document.createElement("div");
		objBottomNav.setAttribute('id','bottomNav');
		objBottomNav.className = 'clearfix';
		objImageData.appendChild(objBottomNav);
		
		var objPrevLinkContainer = document.createElement("div");
		objPrevLinkContainer.setAttribute('id', 'prevLinkContainer');
		objBottomNav.appendChild(objPrevLinkContainer);
	
		var objPrevLink = document.createElement("a");
		objPrevLink.setAttribute('id','prevLink');
		objPrevLink.setAttribute('href','#');
		objPrevLink.onclick = function() { myLightbox.changeImage(activeImage - 1); return false; }
		objPrevLinkContainer.appendChild(objPrevLink);

		var objPrevImage = document.createElement("img");
		objPrevImage.setAttribute('src', filePrevImage);
		objPrevLink.appendChild(objPrevImage);

		var objNextLinkContainer = document.createElement("div");
		objNextLinkContainer.setAttribute('id', 'nextLinkContainer');
		objBottomNav.appendChild(objNextLinkContainer);
	
		var objNextLink = document.createElement("a");
		objNextLink.setAttribute('id','nextLink');
		objNextLink.setAttribute('href','#');
		objNextLink.onclick = function() { myLightbox.changeImage(activeImage + 1); return false; }
		objNextLinkContainer.appendChild(objNextLink);
	
		var objNextImage = document.createElement("img");
		objNextImage.setAttribute('src', fileNextImage);
		objNextLink.appendChild(objNextImage);

		var objCloseLinkContainer = document.createElement("div");
		objCloseLinkContainer.setAttribute('id', 'closeLinkContainer');
		objBottomNav.appendChild(objCloseLinkContainer);
		
		var objCloseLink = document.createElement("a");
		objCloseLink.setAttribute('id','closeLink');
		objCloseLink.setAttribute('href','#');
		objCloseLink.onclick = function() { myLightbox.end(); return false; }
		objCloseLinkContainer.appendChild(objCloseLink);
	
		var objCloseImage = document.createElement("img");
		objCloseImage.setAttribute('src', fileCloseImage);
		objCloseLink.appendChild(objCloseImage);
		/*
		var objBottomNavPrevNext = document.createElement("div");
		objBottomNavPrevNext.setAttribute('id','bottomNavPrevNext');
		objImageData.appendChild(objBottomNavPrevNext);
		*/
		var objImageDetails = document.createElement("div");
		objImageDetails.setAttribute('id','imageDetails');
		objImageData.appendChild(objImageDetails);
	
		var objCaption = document.createElement("span");
		objCaption.setAttribute('id','caption');
		objImageDetails.appendChild(objCaption);
	
		var objNumberDisplay = document.createElement("span");
		objNumberDisplay.setAttribute('id','numberDisplay');
		objImageDetails.appendChild(objNumberDisplay);
},
	
	//
	//	start()
	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
	//
	start: function(imageLink) {	

		hideSelectBoxes();

		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setHeight('overlay', arrayPageSize[1]);
		new Effect.Appear('overlay', { duration: 0.2, from: 0.0, to: 0.8 });

		imageArray = [];
		imageNum = 0;		

		if (!document.getElementsByTagName){ return; }
		var anchors = document.getElementsByTagName('a');
		
		// rev array stores the extra information needed to deal with video.
		var revArray = new Array(3);

		// 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')));			
			// 
			// Added by Kevin Kilcher, kevin@kevinkilcher.com, 44/5/2007
			// We are also using sweetTitles which renames the 'title' attribute to 'tip' which stops the browser
			//	from displyaing it's own version of the tip. So we need to change the above line of code to reflect
			//	'tip' instead of 'title'.
			revArray = imageLink.getAttribute('rev').split(/\||x/);
			imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('tip'), revArray[0], revArray[1], revArray[2]));	
			// -----
		} 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')));
					// 
					// Added by Kevin Kilcher, kevin@kevinkilcher.com, 44/5/2007
					// We are also using sweetTitles which renames the 'title' attribute to 'tip' which stops the browser
					//	from displyaing it's own version of the tip. So we need to change the above line of code to reflect
					//	'tip' instead of 'title'.
					revArray = anchor.getAttribute('rev').split(/\||x/);
					imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('tip'), revArray[0], revArray[1], revArray[2]));
					// -----
				}
			}
			imageArray.removeDuplicates();
			while(imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
		}

		// calculate top offset for the lightbox and display 
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 25);

		Element.setTop('lightbox', lightboxTop);
		Element.show('lightbox');
		
		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
		Element.show('loading');
		Element.hide('lightboxImage');
		Element.hide('prevLinkContainer');
		Element.hide('nextLinkContainer');
		Element.hide('lightboxVideo');
		Element.hide('imageDataContainer');
		Element.hide('numberDisplay');
		Element.setInnerHTML('lightboxVideo', '');
		
		if(imageArray[activeImage][2] == 'image'){
			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);
			}
			imgPreloader.src = imageArray[activeImage][0];
		} else { // imageArray[activeImage][2] == 'movie'
			// no preloading, just change the size of the container and go.
			var videoHeight = parseInt(imageArray[activeImage][4]);
			if(videoController) videoHeight += videoControllerSize; //Make room for the controller.
			var videoWidth = parseInt(imageArray[activeImage][3]);
			
			myLightbox.resizeVideoContainer(videoWidth, videoHeight);
		}
	},

	//
	//	resizeImageContainer()
	//
	resizeImageContainer: function( imgWidth, imgHeight) {
		Element.hide('videoContainer');
		Element.show('imageContainer');
		
		// get current height and width
		this.wCur = Element.getWidth('outerImageContainer');
		this.hCur = Element.getHeight('outerImageContainer');

		// scalars based on change from old to new
		this.xScale = ((imgWidth  + (borderSize * 2)) / this.wCur) * 100;
		this.yScale = ((imgHeight  + (borderSize * 2)) / this.hCur) * 100;

		// calculate size difference between new and old image, and resize if necessary
		wDiff = (this.wCur - borderSize * 2) - imgWidth;
		hDiff = (this.hCur - borderSize * 2) - imgHeight;

		if(!( hDiff == 0)){ new Effect.Scale('outerImageContainer', this.yScale, {scaleX: false, duration: resizeDuration, queue: 'front'}); }
		if(!( wDiff == 0)){ new Effect.Scale('outerImageContainer', 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.setWidth('imageDataContainer', imgWidth + (borderSize * 2));

		this.showImage();
	},
	
	//
	//	showImage()
	//	Display image and begin preloading neighbors.
	//
	showImage: function(){
		Element.hide('loading');
		new Effect.Appear('lightboxImage', { duration: 0.5, queue: 'end', afterFinish: function(){	myLightbox.updateNav(); } });
		this.preloadNeighborImages();
	},

	//
	//	resizeVideoContainer()
	//
	resizeVideoContainer: function( videoWidth, videoHeight ) {
		// Hide the image, show the video
		Element.hide('imageContainer');
		Element.show('videoContainer');

		// get current height and width
		this.wCur = Element.getWidth('outerImageContainer');
		this.hCur = Element.getHeight('outerImageContainer');


		// scalars based on change from old to new
		this.xScale = ((videoWidth  + (borderSize * 2)) / this.wCur) * 100;
		this.yScale = ((videoHeight  + (borderSize * 2)) / this.hCur) * 100;
		
		// calculate size difference between new and old image, and resize if necessary
		wDiff = (this.wCur - borderSize * 2) - videoWidth;
		hDiff = (this.hCur - borderSize * 2) - videoHeight;

		if(!( hDiff == 0)){
			var newHeight = Element.getHeight('outerImageContainer') * (this.yScale / 100);
			Element.setHeight('outerImageContainer', newHeight);
		}
		if(!( wDiff == 0)){
			var newWidth = Element.getWidth('outerImageContainer') * (this.xScale / 100);
			Element.setWidth('outerImageContainer', newWidth);
		}

		Element.setWidth('imageDataContainer', videoWidth + (borderSize * 2));
		//myLightbox.updateDetails();
		myLightbox.updateNav();
		
		//instead of calling showVideo here, we'll do it conditionally in the call back funciton to
		//	updateDetails beause we want the video to appear at the very end because it doesn't get along
		//	with animation and DOM scripting too well.
		//this.showVideo(videoWidth, videoHeigt);
	},
	
	//
	//	showVideo()
	//	Display image and begin preloading neighbors.
	//
	showVideo: function() {
		Element.hide('loading');

		var videoSrc = imageArray[activeImage][0];
		var videoWidth = parseInt(imageArray[activeImage][3]);
		var videoHeight = parseInt(imageArray[activeImage][4]);
		if(videoController) videoHeight += 16;
		
		//var videoObjectString = "<video src=\"" + videoSrc +" \" width=\"" + videoWidth + "\" height=\"" + videoHeight + "\" controls autoplay></video>";
		
		jwplayer("lightboxVideo").setup({
            //flashplayer: "/includes/player.swf",
            file: videoSrc,
            height: videoHeight,
            width: videoWidth,
            controlbar: "bottom",
            autostart: true,
            modes: [
                    {type: 'html5'},
                    {type: 'flash', src: '/includes/player.swf'},
                    ]
        });
		/*
		videoObjectString  = '<object CLASSID="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" id="videoDisplay" ';
		    videoObjectString += 'width="'+ videoWidth +'" height="'+ videoHeight +'" ';
		    videoObjectString += 'CODEBASE="http://www.apple.com/qtactivex/qtplugin.cab">\n';
		    videoObjectString += '<param name="src" value="'+ videoSrc +'">\n';
		    videoObjectString += '<param name="autoplay" value="'+ videoAutoplay +'">\n';
		    videoObjectString += '<param name="loop" value="'+ videoLoop +'">\n';
		    videoObjectString += '<param name="controller" value="'+ videoController +'">\n';
		    videoObjectString += '<embed id="videoDisplay" src="'+ videoSrc +'" width="'+ videoWidth +'" height="'+ videoHeight + ' ';
		    videoObjectString += 'autoplay="'+ videoAutoplay +'" loop="'+ videoLoop +'"';
		    videoObjectString += 'controller="'+ videoController +'" pluginspage="http://www.apple.com/quicktime/"></embed>\n';
		    videoObjectString += '</object>';*/
		
		
		Element.show('lightboxVideo');
		//Element.setInnerHTML('lightboxVideo', videoObjectString);
		this.preloadNeighborImages();
	},

	//
	//	updateDetails()
	//	Display caption, image number, and bottom nav.
	//
	updateDetails: function() {
	
		Element.show('caption');
		if(imageArray[activeImage][1] != null && imageArray[activeImage][1] != ''){
			Element.setInnerHTML( 'caption', imageArray[activeImage][1]);
		} else {
			Element.setInnerHTML( 'caption', '');
		}
		
		// if image is part of set display 'Image x of x' 
		if(imageArray.length > 1){
			Element.show('numberDisplay');
			Element.setInnerHTML( 'numberDisplay', "Image " + eval(activeImage + 1) + " of " + imageArray.length);
		}

		new Effect.Parallel(
			[ new Effect.SlideDown( 'imageDataContainer', { sync: true, duration: resizeDuration + 0.25, from: 0.0, to: 1.0 }), 
			  new Effect.Appear('imageDataContainer', { sync: true, duration: 1.0 }) ], 
			{ duration: 0.65, 
				afterFinish: function() {
					if(imageArray[activeImage][2] == 'movie'){
						myLightbox.showVideo();
					}
					//myLightbox.updateNav();
					myLightbox.enableKeyboardNav();
				}
			} 
		);
	},

	//
	//	updateNav()
	//	Display appropriate previous and next hover navigation.
	//
	//	updateNav: function() {
	//
	//		Element.show('hoverNav');				
	//
	//		// if not first image in set, display prev image button
	//		if(activeImage != 0){
	//			Element.show('prevLink');
	//			document.getElementById('prevLink').onclick = function() {
	//				myLightbox.changeImage(activeImage - 1); return false;
	//			}
	//		}
	//
	//		// if not last image in set, display next image button
	//		if(activeImage != (imageArray.length - 1)){
	//			Element.show('nextLink');
	//			document.getElementById('nextLink').onclick = function() {
	//				myLightbox.changeImage(activeImage + 1); return false;
	//			}
	//		}
	//		
	//		this.enableKeyboardNav();
	//	},
	updateNav: function() {
		Element.hide('prevLinkContainer');
		Element.hide('nextLinkContainer');
		// if not first image in set, display prev image button
		if(activeImage != 0){
			Element.show('prevLinkContainer');
			document.getElementById('prevLink').onclick = function() {
				myLightbox.changeImage(activeImage - 1); return false;
			}
		} else {
			Element.hide('prevLinkContainer');
		}

		// if not last image in set, display next image button
		if(activeImage != (imageArray.length - 1)){
			Element.show('nextLinkContainer');
			document.getElementById('nextLink').onclick = function() {
				myLightbox.changeImage(activeImage + 1); return false;
			}
		} else {
			Element.hide('nextLinkContainer');
		}
		
		// this.enableKeyboardNav();
		myLightbox.updateDetails();
	},

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

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

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

		key = String.fromCharCode(keycode).toLowerCase();
		
		if((key == 'x') || (key == 'o') || (key == 'c')){	// close lightbox
			myLightbox.end();
		} else if(key == 'p'){	// display previous image
			if(activeImage != 0){
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(activeImage - 1);
			}
		} else if(key == 'n'){	// display next image
			if(activeImage != (imageArray.length - 1)){
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(activeImage + 1);
			}
		}


	},

	//
	//	preloadNeighborImages()
	//	Preload previous and next images.
	//
	preloadNeighborImages: function(){
		
		// make sure the next thing is an image and not a video.
		// if((imageArray.length - 1) > activeImage){
		if((imageArray.length - 1) > activeImage && imageArray[activeImage + 1][2] == 'image'){
			preloadNextImage = new Image();
			preloadNextImage.src = imageArray[activeImage + 1][0];
		}
		
		// make sure the previous thing is an image and not a video.
		// if(activeImage > 0){
		if(activeImage > 0 && imageArray[activeImage - 1][2] == 'image'){
			preloadPrevImage = new Image();
			preloadPrevImage.src = imageArray[activeImage - 1][0];
		}
	
	},

	//
	//	end()
	//
	end: function() {
		this.disableKeyboardNav();
		Element.hide('lightbox');
		Element.setInnerHTML('lightboxVideo', '');
		new Effect.Fade('overlay', { duration: 0.2});
		showSelectBoxes();
	}
}

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

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

	var yScroll;

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

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

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

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		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;
	if (self.innerHeight) {	// all except Explorer
		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;
	}

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


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

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

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

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

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}

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



function initLightbox() { myLightbox = new Lightbox(); }
Event.observe(window, 'load', initLightbox, false);