// -----------------------------------------------------------------------------------
//
//	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 = "specifique/img/loading.gif";		
var fileBottomNavCloseImage = "specifique/img/closelabel.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

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

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

var mouseX=0;
var mouseY=0;
function onMouseMove(e){

if (!(self.innerHeight)) { 
mouseX = event.clientX + document.body.scrollLeft;
mouseY = event.clientY + document.body.scrollTop;
} else {
mouseX = e.pageX;
mouseY = e.pageY;
}
}

document.onmousemove = onMouseMove;

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";
},
setPosition: function(element,w) {
element = $(element);
element.style._position = w;
},
setLeft: function(element,w) {
element = $(element);
element.style.left = 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 Lightbox2 = Class.create();

Lightbox2.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() {	


// 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 objBody2 = document.getElementsByTagName("body").item(0);

var objOverlay2 = document.createElement("div");
objOverlay2.setAttribute('id','overlay2');
objOverlay2.style.display = 'none';
objOverlay2.onclick = function() { myLightbox2.end2(); return false; }
objBody2.appendChild(objOverlay2);

var objinfo = document.createElement("div");
objinfo.setAttribute('id','infowindow');
objinfo.style.display = 'none';
objBody2.appendChild(objinfo);

var objinfo = document.createElement("div");
objinfo.setAttribute('id','infowindow2');
objinfo.style.display = 'none';
objBody2.appendChild(objinfo);

var objLightbox2 = document.createElement("div");
objLightbox2.setAttribute('id','lightbox2');
objLightbox2.style.display = 'none';
objBody2.appendChild(objLightbox2);
objLightbox2.onmouseover = function() { afficheinfo(); return false; }
objLightbox2.onclick = function() { myLightbox2.end2(); return false; }

var objOuterImageContainer2 = document.createElement("div");
objOuterImageContainer2.setAttribute('id','outerImageContainer2');
objLightbox2.appendChild(objOuterImageContainer2);

var objImageContainer2 = document.createElement("div");
objImageContainer2.setAttribute('id','imageContainer2');
objOuterImageContainer2.appendChild(objImageContainer2);

var objLightboxImage2 = document.createElement("img");
objLightboxImage2.setAttribute('id','lightbox2Image');
objImageContainer2.appendChild(objLightboxImage2);

var objHoverNav2 = document.createElement("div");
objHoverNav2.setAttribute('id','hoverNav2');
objImageContainer2.appendChild(objHoverNav2);

var objPrevLink2 = document.createElement("a");
objPrevLink2.setAttribute('id','prevLink2');
objPrevLink2.setAttribute('href','#');
objHoverNav2.appendChild(objPrevLink2);

var objNextLink2 = document.createElement("a");
objNextLink2.setAttribute('id','nextLink2');
objNextLink2.setAttribute('href','#');
objHoverNav2.appendChild(objNextLink2);

var objLoading2 = document.createElement("div");
objLoading2.setAttribute('id','loading2');
objImageContainer2.appendChild(objLoading2);

//var objLoadingLink2 = document.createElement("a");
//objLoadingLink2.setAttribute('id','loadingLink2');
//objLoadingLink2.setAttribute('href','#');
//objLoadingLink2.onclick = function() { myLightbox2.end2(); return false; }
//objLoading2.appendChild(objLoadingLink2);

var objLoadingImage2 = document.createElement("img");
objLoadingImage2.setAttribute('src', fileLoadingImage);
objLoading2.appendChild(objLoadingImage2);

var objImageDataContainer2 = document.createElement("div");
objImageDataContainer2.setAttribute('id','imageDataContainer2');
objImageDataContainer2.className = 'clearfix2';
objLightbox2.appendChild(objImageDataContainer2);

var objImageData2 = document.createElement("div");
objImageData2.setAttribute('id','imageData2');
objImageDataContainer2.appendChild(objImageData2);

var objImageDetails2 = document.createElement("div");
objImageDetails2.setAttribute('id','imageDetails2');
objImageData2.appendChild(objImageDetails2);

var objCaption2 = document.createElement("span");
objCaption2.setAttribute('id','caption2');
objImageDetails2.appendChild(objCaption2);

var objNumberDisplay2 = document.createElement("span");
objNumberDisplay2.setAttribute('id','numberDisplay2');
objImageDetails2.appendChild(objNumberDisplay2);

var objBottomNav2 = document.createElement("div");
objBottomNav2.setAttribute('id','bottomNav2');
objImageData2.appendChild(objBottomNav2);

var objBottomNavCloseLink2 = document.createElement("a");
objBottomNavCloseLink2.setAttribute('id','bottomNav2Close');
objBottomNavCloseLink2.setAttribute('href','#');
objBottomNavCloseLink2.onclick = function() { myLightbox2.end2(); return false; }
objBottomNav2.appendChild(objBottomNavCloseLink2);

var objBottomNavCloseImage2 = document.createElement("img");
objBottomNavCloseImage2.setAttribute('src', fileBottomNavCloseImage);
objBottomNavCloseLink2.appendChild(objBottomNavCloseImage2);

},

//
//	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', 1200);
var array2 = screen.width;
Element.setWidth('overlay', array2);


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');


// calculate top offset for the lightbox and display 
var arrayPageSize = getPageSize();
var arrayPageScroll = getPageScroll();
var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15)- 30;
var lightboxLeft = (screen.width / 2 )- 400;
anchor=anchors[0];

imageArray.push(new Array(imageLink, "hello"));

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('hoverNav');
Element.hide('prevLink');
Element.hide('nextLink');
Element.hide('imageDataContainer');
Element.hide('numberDisplay');		

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];
},

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

// 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.setHeight('prevLink', imgHeight);
Element.setHeight('nextLink', imgHeight);
Element.setWidth( 'imageDataContainer', imgWidth + (borderSize * 2));

this.showImage();
},

resizeImageContainer2: function( imgWidth, imgHeight) {

// get current height and width
this.wCur = 50;
this.hCur = 50;

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

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

//if(!( hDiff == 0)){ new Effect.Scale('outerImageContainer2', this.yScale, {scaleX: false, duration: resizeDuration, queue: 'front'}); }
//if(!( wDiff == 0)){ new Effect.Scale('outerImageContainer2', this.xScale, {scaleY: false, delay: resizeDuration, duration: resizeDuration}); }

if((!( hDiff == 0))&&(!( wDiff == 0))){
if (ppc==1)
{
new Effect.Scale('outerImageContainer2', this.xScale-40, {duration: resizeDuration, queue: 'front'}); 
} else {
new Effect.Scale('outerImageContainer2', this.xScale-50, {duration: resizeDuration, queue: 'front'}); 
}

}
this.yScale=1010/((this.xScale)*this.wCur);
if (ppc==1)
{
new Effect.Scale('outerImageContainer2', 62.5, {scaleX: false, delay: resizeDuration, duration: resizeDuration});
} else {
new Effect.Scale('outerImageContainer2', 97, {scaleX: 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('prevLink2', imgHeight);
Element.setHeight('nextLink2', imgHeight);
Element.setWidth( 'imageDataContainer2', imgWidth + (borderSize * 2));
Element.hide('imageDataContainer2');
Element.hide('prevLink2');
Element.hide('nextLink2');

//this.showImage();
},



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

//
//	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();
},

//
//	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(){

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');
new Effect.Fade('overlay', { duration: 0.2});
showSelectBoxes();
},

end2: function() {
this.disableKeyboardNav();
Element.hide('lightbox2');
Element.hide('infowindow');
new Effect.Fade('overlay2', { duration: 0.2});
showSelectBoxes();
closeinfo2();
closePane3b();
}
}

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

//
// 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;
var myWidth = 0, myHeight = 0;
if( typeof( window.innerWidth ) == 'number' ) {
//Non-IE
myWidth = window.innerWidth;
myHeight = window.innerHeight;
} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
//IE 6+ in 'standards compliant mode'
myWidth = document.documentElement.clientWidth;
myHeight = document.documentElement.clientHeight;
} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
//IE 4 compatible
myWidth = document.body.clientWidth;
myHeight = document.body.clientHeight;
}
windowWidth = myWidth;
windowHeight = myHeight;

// 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 afficheinfo(){
Element.setTop('infowindow',mouseY);
Element.setLeft('infowindow',mouseX);
Element.setInnerHTML( 'infowindow', 'Laissez défiler, cliquez pour fermer')
Element.show('infowindow');
}

function closeinfo2(){
new Effect.Fade('infowindow2', { duration: 0.2});
}

function afficheinfo2(texte){
Element.setTop('infowindow2',screen.height/2);
Element.setLeft('infowindow2',screen.width/2-290);
Element.setInnerHTML( 'infowindow2', texte);
new Effect.Appear('infowindow2', { duration: 0.2, from: 0.0, to: 0.75 });
var functo = 'closeinfo2()';
too2 = setTimeout(functo,4000);
}

function afficheinfo3(texte){
Element.setTop('infowindow2',screen.height/2);
Element.setLeft('infowindow2',screen.width/2-250);
Element.setInnerHTML( 'infowindow2', texte);
new Effect.Appear('infowindow2', { duration: 0.2, from: 0.0, to: 0.75 });
var functo = 'closeinfo2()';
too2 = setTimeout(functo,4000);
}



function initLightbox2() { 
myLightbox2 = new Lightbox2();
}
Event.observe(window, 'load', initLightbox2, false);