// -----------------------------------------------------------------------------------
//
//	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	
	- Array.prototype.removeDuplicates()
	- Array.prototype.empty()

	Lightbox Class Declaration
	- 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 = "../../jbox/images/loading.gif";		
var fileBottomNavCloseImage = "../../jbox/images/closelabel.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

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

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

if(resizeSpeed > 10){ resizeSpeed = 10;}
if(resizeSpeed < 1){ resizeSpeed = 1;}
resizeDuration = (11 - resizeSpeed) * 0.15 * 1000;

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

//
//	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/)
//

$.fn.Lightbox = function(o){
	// 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.

	if (o) { $.Lightbox.params = o; }

	var anchors = this;

	$(anchors).each(function(){
		var anchor = this;

		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).click(function(){
				$.Lightbox.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';
	$(objOverlay).click(function(){$.Lightbox.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);

	switch($.Lightbox.params.mode) {
		case 'panoramic':
			var objLightboxImage = document.createElement("div");

			$(objLightboxImage).append('<a href=\"#\" id=\"panoLeftLink\" class=\"panoSliders\"></a>');
			$(objLightboxImage).append('<a href=\"#\" id=\"panoRightLink\" class=\"panoSliders\"></a>');

		break;
		
		default:
			var objLightboxImage = document.createElement("img");
			
			var objHoverNav = document.createElement("div");
			objHoverNav.setAttribute('id','hoverNav');
				
			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);
	}

	objLightboxImage.setAttribute('id','lightboxImage');
	objImageContainer.appendChild(objLightboxImage);
	
	if (objHoverNav){
		objImageContainer.appendChild(objHoverNav);
	}
	
	var objLoading = document.createElement("div");
	objLoading.setAttribute('id','loading');
	objImageContainer.appendChild(objLoading);
	
	var objLoadingLink = document.createElement("a");
	objLoadingLink.setAttribute('id','loadingLink');
	objLoadingLink.setAttribute('href','#');
	$(objLoadingLink).click(function(){$.Lightbox.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 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','#');
	$(objBottomNavCloseLink).click(function(){$.Lightbox.end(); return false;});
	objBottomNav.appendChild(objBottomNavCloseLink);
	
	var objBottomNavCloseImage = document.createElement("img");
	objBottomNavCloseImage.setAttribute('src', fileBottomNavCloseImage);
	objBottomNavCloseLink.appendChild(objBottomNavCloseImage);

	$('.panoSliders').click(function(){return false;})
	.mouseover($.Lightbox.panoramic.startSlide)
	.mouseout($.Lightbox.panoramic.stopSlide).css({display: 'none'});
	

	return false;
}

$.Lightbox = {
	
	params: {},

	//
	//	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();

		$('#overlay').css({height: arrayPageSize[1]+'px'});
		$('#overlay').fadeIn('slow');
		
		imageArray = [];
		imageNum = 0;		

		var anchors = $('a');
		// if image is NOT part of a set..
		if((imageLink.getAttribute('rel') == 'lightboxPanoramic')){
			$('.panoSliders').css({display: 'block'});
		}
		if((imageLink.getAttribute('rel') == 'lightbox')){
			// add single image to imageArray
			imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title'), imageLink.getAttribute('rel')));			
		} else {
		// if image is part of a set..

			// loop through anchors, find other images in set, and add them to imageArray
			$(anchors).each(function(){
				var anchor = this;
				if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
					imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title'), imageLink.getAttribute('rel')));
				}
			});
			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] / 15);

		$('#lightbox').css({marginTop: lightboxTop+'px'}).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	
		$('#loading').show();
		$('#lightboxImage').hide();
		$('#hoverNav').hide();
		$('#prevLink').hide();
		$('#nextLink').hide();
		$('#imageDataContainer').hide();
		$('#numberDisplay').hide();
		
		imgPreloader = new Image();
		
		// once image is preloaded, resize image container
		$(imgPreloader).load(function(){
									
			resizeHeight = imgPreloader.height;
			
			var lightboxMode = imageArray[activeImage][2];
			
			// switch($.Lightbox.params.mode) {
			switch(lightboxMode) {
				case 'lightboxPanoramic':
					resizeWidth  = $.Lightbox.params.width;

				
					$('#lightboxImage').css({	background: 'url('+imageArray[activeImage][0]+') 0% no-repeat',
												width:      resizeWidth+'px',
												height:     resizeHeight+'px',
												overflow:   'hidden'
					});
	
					panoSlidersHeight = $('.panoSliders').css('height');
					panoSlidersHeight = panoSlidersHeight.replace(/px/, '');
				
					$('.panoSliders').css({marginTop: ( (imgPreloader.height - panoSlidersHeight)/2)+'px'});
				
				break;
			
				default:
					resizeWidth  = imgPreloader.width;
					
					$('#lightboxImage').css({	background: 'url('+imageArray[activeImage][0]+') 0% no-repeat',
												width:      resizeWidth+'px',
												height:     resizeHeight+'px',
												overflow:   'hidden'
					});

					$('#lightboxImage').attr('src', imageArray[activeImage][0]);
			}

			$.Lightbox.resizeImageContainer(resizeWidth, resizeHeight);

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

	},

	//
	//	resizeImageContainer()
	//
	resizeImageContainer: function( imgWidth, imgHeight) {
		// get current height and width
		//var outerImageContainerSize = jQuery.iUtil.getSize($('#outerImageContainer'));
		this.wCur = $('#outerImageContainer').css('width');
		this.hCur = $('#outerImageContainer').css('height');
		
		this.wCur = this.wCur.replace(/px/, '');
		this.hCur = this.wCur.replace(/px/, '');
		
		// scalars based on change from old to new
		this.xScale = imgWidth  + (borderSize * 2);
		this.yScale = imgHeight  + (borderSize * 2);

		// calculate size difference between new and old image, and resize if necessary
		wDiff = (this.wCur - borderSize * 2) - imgWidth;
		hDiff = (this.hCur - borderSize * 2) - imgHeight;
		
		$('#outerImageContainer').animate({height: this.yScale}, resizeDuration);
		$('#outerImageContainer').animate({width:  this.xScale}, resizeDuration);
			
		$('#prevLink').css({height: imgHeight+'px'});
		$('#nextLink').css({height: imgHeight+'px'});
		$('#imageDataContainer').css({width: imgWidth + (borderSize * 2) + 'px'});

		setTimeout(this.showImage, resizeDuration*2);
	},
	
	//
	//	showImage()
	//	Display image and begin preloading neighbors.
	//
	showImage: function(){
		$('#loading').hide();
		$('#lightboxImage').fadeIn('slow', function(){
			$.Lightbox.updateDetails();
		});

		$.Lightbox.preloadNeighborImages();
	},
	
	//
	//	updateDetails()
	//	Display caption, image number, and bottom nav.
	//
	updateDetails: function() {

		$('#caption').show().html(imageArray[activeImage][1]);

		// if image is part of set display 'Image x of x' 
		if(imageArray.length > 1){
			$('#numberDisplay').show().html("Image " + eval(activeImage + 1) + " of " + imageArray.length);
		}

		$('#imageDataContainer').slideDown('slow', $.Lightbox.updateNav);
	},

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

		$('#hoverNav').show();

		$('#prevLink').unbind();
		$('#nextLink').unbind();
		
		// if not first image in set, display prev image button
		if(activeImage != 0){
			$('#prevLink').show().click(function(){
				$.Lightbox.changeImage(activeImage - 1); return false;
			});
		}

		// if not last image in set, display next image button
		if(activeImage != (imageArray.length - 1)){	
			$('#nextLink').show().click(function(){
				$.Lightbox.changeImage(activeImage + 1); return false;
			});
		}
		
		$.Lightbox.enableKeyboardNav();
	},

	//
	//	enableKeyboardNav()
	//
	enableKeyboardNav: function() {
		$(document).keydown($.Lightbox.keyboardAction);
	},

	//
	//	disableKeyboardNav()
	//
	disableKeyboardNav: function() {
		$(document).keydown(function(){});
	},

	//
	//	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
			$.Lightbox.end();
		} else if(key == 'p'){	// display previous image
			if(activeImage != 0){
				$.Lightbox.disableKeyboardNav();
				$.Lightbox.changeImage(activeImage - 1);
			}
		} else if(key == 'n'){	// display next image
			if(activeImage != (imageArray.length - 1)){
				$.Lightbox.disableKeyboardNav();
				$.Lightbox.changeImage(activeImage + 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();
		/*$('#lightbox').fadeOut('slow', function(){
			$('#overlay').fadeOut('slow');
		});*/
		$('#lightbox').hide();
		$('#overlay').fadeOut('slow', function(){
				$('#overlay').hide();	  
		});
		showSelectBoxes();
	},
	

	//
	//	panoramic photos slider
	//
	panoramic: {
		interval:  0,
		direction: 0,
			
		startSlide: function() {
			$.Lightbox.panoramic.direction = this.id;
			
			if (speed = $.Lightbox.params.speed) {
				$.Lightbox.panoramic.interval = setInterval($.Lightbox.panoramic.slide, speed);
			}
		},
		
		stopSlide: function() {
			clearInterval($.Lightbox.panoramic.interval);
		},
		
		slide: function() {
			var bg_str = $("#lightboxImage").css("backgroundPosition");
			var pos    = 0;
			
			if (bg_str) {
				bg_str = bg_str.replace(/%/gi, '');
				bg_str = bg_str.split(' ');
				pos    = bg_str[0];
			}
			
			if ($.Lightbox.panoramic.direction == 'panoLeftLink') {
				pos--;
			}else{
				pos++;
			}
			
			if ( pos >= 100 || pos <= 0){ pos = 0; return false; }
			
			$("#lightboxImage").css({backgroundPosition: pos+'%'});
		}

	}
}

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

//
// 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).keypress(getKey); }
	
// ---------------------------------------------------

function showSelectBoxes(){
	$('select').css({visibility: 'visible'});
}

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


function hideSelectBoxes(){
	$('select').css({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;
	}
}

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



$(document).ready(function(){
	$('a').Lightbox({mode: 'panoramic', width: 550, speed: 140});
})