// -----------------------------------------------------------------------------------
//
//	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.
//
//
// -----------------------------------------------------------------------------------
//
//  Changes made by D. Hyde (http://www.dplot.com)
//
//  Added support for image maps. Note that this results in a warning message in most HTML validation routines
//  concerning "rel" not being a valid property of <AREA> tags. I have no idea how serious this might be, but 
//  it works in IE, FF, and Opera.
//
//  Deleted all hoverNav, prevLink and nextLink references. The prev and next buttons worked well, but had the 
//  unfortunate side effect of preventing right-click context menus from working. Plus I wanted to be able to 
//  click on the image to close it.
//
//  Click just about anywhere to close the image, other than the nav buttons. Original LightBox 2 script only 
//  closed when a) clicking the close link, b) clicking above or below the image, or c) pressing the 'X' key.
//
//  Added my own nav links for image sets, including 'first' and 'last'.
//
//  Keyboard support:
//  'X' or <Esc> closes the image.
//  'F' = first image in set
//  'P' = previous image in set
//  'N' = next image in set
//  'L' = last image in set
//  'R' = random image from set.
//
//  Added image resizing code. This works well for photos, but is pretty nasty for my graphs. I therefore 
//  use the global resizeImage (see below) to specify whether resizing should take place or not. I have no
//  pages that mix photos and graphs, so my pages will use one of two versions of this script. If necessary
//  you could fairly easily add something to the "rel" tag to specify this setting.
//
//  Added a flag (FX below) to specify whether the nice fade/stretch/slide effects should be used.
//	Including those effects costs ~27Kb. If you DO set FX=1, you'll also need to:
//	<script type="text/javascript" src="<path to your js files>/scriptaculous.js?load=effects"></script>
//	before loading lightbox.js
//
//  Center on the browser window (roughly). Original lightbox had a fixed top position.
//
//	Added support for multiple-resolution versions of images. If an image filename contains the string
//	l_suffix (see below), AND the screen height is less than l_limit but greater than m_limit, then
//	l_suffix is replaced with m_suffix. If the height is less than m_limit then s_suffix is used. This
//	feature works *only* at the time an image is first clicked. IOW, if a user clicks an image in a 
//	set and then resizes the browser window, resizing has no effect on the decision of which image to
//	display.
//
// -----------------------------------------------------------------------------------
/*

	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()
	- enableKeyboardNav()
	- disableKeyboardNav()
	- keyboardAction()
	- preloadNeighborImages()
	- end()
	
	Miscellaneous Functions
	- getPageScroll()
	- getPageSize()
	- getKey()
	- listenKey()
	- showSelectBoxes()
	- hideSelectBoxes()
	- pause()
	- initLightbox()
	
	Function Calls
	- addLoadEvent(initLightbox)
	
*/
// -----------------------------------------------------------------------------------

//
//	Configuration
//
var imgLoading = "http://www.fnp.no/img/lb_loading.gif";		
var imgClose = "http://www.fnp.no/img/lb_close.gif";
var imgFirst = "http://www.fnp.no/img/lb_first.gif";
var imgPrev = "http://www.fnp.no/img/lb_prev.gif";
var imgNext = "http://www.fnp.no/img/lb_next.gif";
var imgLast = "http://www.fnp.no/img/lb_last.gif";
var imgFirstDis = "http://www.fnp.no/img/lb_firstd.gif";
var imgPrevDis = "http://www.fnp.no/img/lb_prevd.gif";
var imgNextDis = "http://www.fnp.no/img/lb_nextd.gif";
var imgLastDis = "http://www.fnp.no/img/lb_lastd.gif";

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

var borderSize = 5;	//if you adjust the padding in the CSS, you will need to update this variable

var resizeImage = 0;
var lightboxTopFnp = -1;
var ImageHeightFnp = 0;
var FX = 0;				// Non-zero to use effects.js fancy scrolling, fading, etc. (Costs ~27Kb)

// DWH: Multiple resolution stuff. If an image contains l_suffix in the name, AND
//      the client height is less than l_limit, we'll replace l_suffix with
//      s_suffix in the href and use that image instead.
//      NOTE: The check for client height only occurs on first click. If user resizes 
//      the window while viewing an image set, he'll still get the same set of images.

var l_suffix = "_h600.";
var m_suffix = "_h400.";
var s_suffix = "_h300.";
var l_limit = 650;
var m_limit = 450;

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

//
//	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";
	},
	getHeight: function(element) {
		element = $(element);
		return element.offsetHeight;
	},
	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;
	},
	setLeft: function(element,l) {
		element = $(element);
		element.style.left = l +"px";
	},
	getLeft: function(element) {
		element = $(element);
		return element.offsetLeft;
	}
});

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

//
//	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()
//	- 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;}
			}
		}

		// DWH: Add support for image maps
		var area_anchors = document.getElementsByTagName('area');

		// loop through all anchor tags
		for (var i=0; i<area_anchors.length; i++){
			var area_anchor = area_anchors[i];
			var area_relAttribute = String(area_anchor.getAttribute('rel'));
			if (area_anchor.getAttribute('href') && (area_relAttribute.toLowerCase().match('lightbox'))){
				area_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 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>


		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';
		objLightbox.onmousedown = LightboxClick;
		objBody.appendChild(objLightbox);
		
		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 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);
		
		var objBottomNav = document.createElement("div");
		objBottomNav.setAttribute('id','bottomNav');
		objImageData.appendChild(objBottomNav);
	
		var objBottomNavCloseLink = document.createElement("a");
		objBottomNavCloseLink.setAttribute('id','bottomNavClose');
		objBottomNavCloseLink.setAttribute('href','#');
		objBottomNavCloseLink.onclick = function() { myLightbox.end(); return false; }
		objBottomNav.appendChild(objBottomNavCloseLink);
	
		var objBottomNavCloseImage = document.createElement("img");
		objBottomNavCloseImage.setAttribute('src', imgClose);
		objBottomNavCloseLink.appendChild(objBottomNavCloseImage);
		

		var objOuterImageContainer = document.createElement("div");
		objOuterImageContainer.setAttribute('id','outerImageContainer');
  		objOuterImageContainer.onclick = function() { myLightbox.end(); return false; }	// DWH: close on click
		objLightbox.appendChild(objOuterImageContainer);

		var objImageContainer = document.createElement("div");
		objImageContainer.setAttribute('id','imageContainer');
		objImageContainer.onclick = function() { myLightbox.end(); return false; }	// DWH: close on click
		objOuterImageContainer.appendChild(objImageContainer);
	
		var objLightboxImage = document.createElement("img");
		objLightboxImage.setAttribute('id','lightboxImage');
		objLightboxImage.onclick = function() { myLightbox.end(); return false; }	// DWH: close on click
		objImageContainer.appendChild(objLightboxImage);
	
		var objLoading = document.createElement("div");
		objLoading.setAttribute('id','loading');
		objImageContainer.appendChild(objLoading);
	
		var objLoadingLink = document.createElement("a");
		objLoadingLink.setAttribute('id','loadingLink');
		objLoadingLink.setAttribute('href','#');
		objLoading.appendChild(objLoadingLink);
	
		var objLoadingImage = document.createElement("img");
		objLoadingImage.setAttribute('src', imgLoading);
		objLoadingLink.appendChild(objLoadingImage);

	},
	
	//
	//	start()
	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
	//
	start: function(imageLink) {	

//	DWH: Since I never use lightbox on pages with forms, I don't care about this:
//		hideSelectBoxes();

		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setHeight('overlay', arrayPageSize[1]);

		if(FX != 0) {
			new Effect.Appear('overlay', { duration: 0.2, from: 0.0, to: 0.6 });
		} else {
			Element.show('overlay');
		}

		imageArray = [];
		imageNum = 0;		

		if (!document.getElementsByTagName){ return; }
		var anchors = document.getElementsByTagName('a');

		// DWH: Add support for image maps
		var area_anchors = document.getElementsByTagName('area');

		var j=0;
		var img_this = "";

		// if image is NOT part of a set..
		if((imageLink.getAttribute('rel') == 'lightbox')){
			// add single image to imageArray
			img_this = imageLink.getAttribute('href');
			img_this = PickImage(img_this,arrayPageSize[3]);
			imageArray.push(new Array(img_this, imageLink.getAttribute('title')));

		} 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'))){
					img_this = anchor.getAttribute('href');
					img_this = PickImage(img_this,arrayPageSize[3]);
					imageArray.push(new Array(img_this, anchor.getAttribute('title')));
				}
			}

			// DWH: Repeat for areas (image maps)
			for (var i=0; i<area_anchors.length; i++){
				var area_anchor = area_anchors[i];
				if (area_anchor.getAttribute('href') && (area_anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
					img_this = area_anchor.getAttribute('href');
					img_this = PickImage(img_this,arrayPageSize[3]);
					imageArray.push(new Array(img_this, area_anchor.getAttribute('title')));
				}
			}

 			imageArray.removeDuplicates();
// 			while(imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
			img_this = imageLink.getAttribute('href');
			img_this = PickImage(img_this,arrayPageSize[3]);
 			while(imageArray[imageNum][0] != img_this) { imageNum++;}
		}
		if(lightboxTopFnp== -1) {
			// calculate top offset for the lightbox and display 			
			var arrayPageSize = getPageSize();
			var arrayPageScroll = getPageScroll();
			var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 2) - 125;
			Element.setTop('lightbox', lightboxTop);						
			lightboxTopFnp = lightboxTop;
		} else
		{
          var arrayPageSize = getPageSize();
		  var arrayPageScroll = getPageScroll();
          var lightboxTop = (arrayPageSize[3]-ImageHeightFnp) /2;
		  if(lightboxTop < 0) lightboxTop = 0;
		  var arrayPageScroll = getPageScroll();
		  lightboxTop += arrayPageScroll[1];

          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('imageDataContainer');
		Element.hide('numberDisplay');		
		
		imgPreloader = new Image();

		// once image is preloaded, resize image container
		imgPreloader.onload=function(){

			var arrayPageSize = getPageSize();
			Element.setSrc('lightboxImage', imageArray[activeImage][0]);

			/* DWH: Image resizing (or not). The problem with resizing graphs is... 
			        they look really bad. Works well for photos, though. */
			if(resizeImage == 0)
			{
				myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
			}
			else
			{
				var page_w = arrayPageSize[2];
				var page_h = arrayPageSize[3];
			
				var x = page_w - 100;
				var y = page_h - 100;

		    	if(imgPreloader.width > x) 
				{ 
	    			imgPreloader.height = imgPreloader.height * (x/imgPreloader.width); 
					imgPreloader.width = x; 
					if(imgPreloader.height > y) 
					{ 
    					imgPreloader.width = imgPreloader.width * (y/imgPreloader.height); 
    					imgPreloader.height = y; 
					}
		    	} 
    			else if(imgPreloader.height > y) 
				{ 
	    			imgPreloader.width = imgPreloader.width * (y/imgPreloader.height); 
	    			imgPreloader.height = y; 
					if(imgPreloader.width > x) 
					{ 
	    				imgPreloader.height = imgPreloader.height * (x/imgPreloader.width); 
    					imgPreloader.width = x;
		   			}
    			}
				Element.setWidth('lightboxImage', imgPreloader.width);		
				myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
			}

			/*  DWH: Reset top position to more-or-less center LightBox.
				     Subtract height of Close image (22) plus it's padding (guessing 0.7em ~ 10).
			         This may or may not be correct depending on how many title lines there are,
			         if any. I'm lazy, and it's close. */

			var lightboxTop = (arrayPageSize[3]-imgPreloader.height-borderSize*2-32)/2;
			if(lightboxTop < 0) lightboxTop = 0;
			var arrayPageScroll = getPageScroll();
			lightboxTop += arrayPageScroll[1];
			Element.setTop('lightbox', lightboxTop);
			ImageHeightFnp = imgPreloader.height;			

		}
		imgPreloader.src = imageArray[activeImage][0];
	},

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

		if(FX != 0) {
			// 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);} 
			}
		} else {
			Element.setHeight('outerImageContainer',imgHeight + (borderSize*2));
			Element.setWidth('outerImageContainer',imgWidth + (borderSize*2));
		}
		Element.setWidth( 'imageDataContainer', imgWidth + (borderSize * 2));
		this.showImage();
	},
	
	//
	//	showImage()
	//	Display image and begin preloading neighbors.
	//
	showImage: function(){
		Element.hide('loading');
		if(FX != 0) {
			new Effect.Appear('lightboxImage', { duration: 0.5, queue: 'end', afterFinish: function(){	myLightbox.updateDetails(); } });
		} else {
			Element.show('lightboxImage');
			myLightbox.updateDetails();
		}
		this.preloadNeighborImages();
	},

	//
	//	updateDetails()
	//	Display caption, image number, and bottom nav.
	//
	updateDetails: function() {
	
		Element.show('caption');
		Element.setInnerHTML( 'caption', imageArray[activeImage][1]);
		
		// if image is part of set display 'Image x of x' (DWH: along with my nav buttons)
		if(imageArray.length > 1){
			Element.show('numberDisplay');
			var setDis="";
			if(activeImage > 0){
				setDis='<a href="#" title="First" onClick="myLightbox.changeImage(0); return false;"><img src=' + imgFirst + '></a> ';
				setDis+='<a href="#" title="Previous" onClick="myLightbox.changeImage(activeImage - 1); return false;"><img src=' + imgPrev + '></a> ';
			} else {
				setDis='<img src=' + imgFirstDis + '> <img src=' + imgPrevDis + '> ';
			}
			setDis += 'Image ' + eval(activeImage + 1) + ' of ' + imageArray.length;
			if(activeImage < (imageArray.length - 1)){
				setDis += ' <a href="#" title="Next" onClick="myLightbox.changeImage(activeImage + 1); return false;"><img src=' + imgNext + '></a>';
				setDis += ' <a href="#" title="Last" onClick="myLightbox.changeImage(imageArray.length - 1); return false;"><img src=' + imgLast + '></a>';
			} else {
				setDis += ' <img src=' + imgNextDis + '> <img src=' + imgLastDis + '>';
			}

			Element.setInnerHTML( 'numberDisplay', setDis);
		}

		if(FX != 0) {
			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() { myLightbox.enableKeyboardNav();} } 
			);
		} else {
			Element.show('imageDataContainer');
			myLightbox.enableKeyboardNav();
		}
	},

	//
	//	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') || (keycode == 27)){	// 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);
			}
		} else if(key == 'r') {				// display random image
			myLightbox.disableKeyboardNav();
			myLightbox.changeImage(Math.floor(Math.random()*imageArray.length));
		} else if(key == 'f') {				// display first image
			if(activeImage != 0) {
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(0);
			}
		} else if(key == 'l') {				// display last image
			if(activeImage != (imageArray.length - 1)) {
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(imageArray.length - 1);
			}
		}
	},

	//
	//	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();
		Element.hide('lightbox');
		if(FX != 0) {
			new Effect.Fade('overlay', { duration: 0.2});
		} else {
			Element.hide('overlay');
		}
//	DWH: Since I never use lightbox on pages with forms, I don't care about this:
//		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'){
	}
}

// -----------------------------------------------------------------------------------
/* DWH: Never used? Why's it here?
//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }
*/
// ---------------------------------------------------
/*
	DWH: Since I never use lightbox on pages with forms, I don't care about this:
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;
	}
}
// ---------------------------------------------------
// DWH
// PickImage picks which image to display based on
// the client height and whether the original image
// filename includes the appropriate suffix.
function PickImage(imgname,h) {
	if(h < l_limit) {
		var j = imgname.indexOf(l_suffix);
		if(j != -1) {
			if(h < m_limit) {
				imgname = imgname.substring(0,j) + s_suffix + imgname.substring(j+l_suffix.length);
			} else {
				imgname = imgname.substring(0,j) + m_suffix + imgname.substring(j+l_suffix.length);
			}
		}
	}
	return imgname;
}

// ---------------------------------------------------
// DWH
// LightboxClick added to check whether user clicks
// left or right of outerImageContainer. We can't
// just set the onclick event of lightbox to shut
// everything down, because then clicking *anywhere*,
// including our navigation buttons, shuts it down.
// So we check whether the mouse was to the left or
// right of the image.
function LightboxClick(e) {

	var posx = 0;
	var posy = 0;
	if (!e) var e = window.event;
	if (e.pageX || e.pageY) 	{
		posx = e.pageX;
		posy = e.pageY;
	}
	else if (e.clientX || e.clientY) 	{
		posx = e.clientX + document.body.scrollLeft
			+ document.documentElement.scrollLeft;
		posy = e.clientY + document.body.scrollTop
			+ document.documentElement.scrollTop;
	}
	// posx and posy contain the mouse position relative to the document
	var w = Element.getWidth('outerImageContainer');
	var l = Element.getLeft('outerImageContainer');
	if( posx < l ) {
		myLightbox.end();
	}
	else if( posx > l+w ) {
		myLightbox.end();
	}
	return false;
}
// ---------------------------------------------------
function initLightbox() { myLightbox = new Lightbox(); }
Event.observe(window, 'load', initLightbox, false);