/*
	Lightbox JS: Fullsize Image Overlays 
	by Lokesh Dhakar - http://www.huddletogether.com

	For more information on this script, visit:
	http://huddletogether.com/projects/lightbox/

	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
	(basically, do anything you want, just leave my name and link)
	
	Table of Contents
	-----------------
	Configuration
	
	Functions
	- getPageScroll()
	- getPageSize()
	- pause()
	- getKey()
	- listenKey()
	- showLightbox()
	- hideLightbox()
	- initLightbox()
	- addLoadEvent()
	
	Function Calls
	- addLoadEvent(initLightbox)

*/

//
// Configuration
//

// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = 'images/default/en/lightbox/loading.gif';		
var closeButton = 'images/default/en/lightbox/close.gif';		





//
// 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;
}


//
// 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, callback) {
	var timer = window.setTimeout(callback, numberMillis)
}

//
// 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'){ hideLightbox(); }
}


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

//change the opacity for different browsers
function checkOpac(id) {

if(typeof(changeOp) != "undefined"){
//clearTimeout(changeOp);
}

    var object = document.getElementById(id).style; 
    if(object.opacity>0 || object.MozOpacity>0 || object.KhtmlOpacity>0 || object.filter>0){
    object.opacity = 0;
    object.MozOpacity = 0;
    object.KhtmlOpacity = 0;
    //object.filter = "alpha(opacity=" + 0 + ")";
    }
} 



function showLightbox(objLink)
{
// prep objects
var objOverlay = document.getElementById('overlay');
var objLightbox = document.getElementById('lightbox');
var objCaption = document.getElementById('lightboxCaption');
var objImage = document.getElementById('lightboxImage');
var objLoadingImage = document.getElementById('loadingImage');
var objLightboxDetails = document.getElementById('lightboxDetails');

var arrayPageSize = getPageSize();
var arrayPageScroll = getPageScroll();

// center loadingImage if it exists
if (objLoadingImage) {
objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px');
objLoadingImage.style.display = 'block';
}

// set height of Overlay to take up whole page and show
objOverlay.style.height = (arrayPageSize[1] + 'px');
objOverlay.style.display = 'block';

// preload image
imgPreload = new Image();
imgPreload.onload=function(){
objImage.src = objLink.href;

// center lightbox and make sure that the top and left values are not negative
// and the image placed outside the viewport
var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);

objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";


objLightboxDetails.style.width = imgPreload.width + 'px';

if(objLink.getAttribute('title')){
objCaption.style.display = 'block';
//objCaption.style.width = imgPreload.width + 'px';
objCaption.innerHTML = objLink.getAttribute('title');
} else {
objCaption.style.display = 'none';
}

// A small pause between the image loading and displaying is required with IE,
// this prevents the previous image displaying for a short burst causing flicker.
if (navigator.appVersion.indexOf("MSIE")!=-1){
//pause(250);
	pause(250, function() {
		});
} 

if (objLoadingImage) { objLoadingImage.style.display = 'none'; }

// Hide select boxes as they will 'peek' through the image in IE
selects = document.getElementsByTagName("select");
for (i = 0; i != selects.length; i++) {
selects[i].style.visibility = "hidden";
}

opacity('overlay', 0, 65, 1500);
//pause(550);
pause(550, function() {
			opacity('lightbox', 0, 100, 1000);	
		});
//opacity('lightbox', 0, 100, 1500);

//objLightbox.style.display = 'block';

// After image is loaded, update the overlay height as the new image might have
// increased the overall page height.
arrayPageSize = getPageSize();
objOverlay.style.height = (arrayPageSize[1] + 'px');

// Check for 'x' keypress
listenKey();

return false;
}
imgPreload.src = objLink.href;

}




//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showStoreLightbox(objLink)
{
   //changeOpac(0, 'overlay');
   
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objCaption = document.getElementById('lightboxCaption');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objLightboxDetails = document.getElementById('lightboxDetails');

	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	if (objLoadingImage) {
		objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
		objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px');
		objLoadingImage.style.display = 'block';
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';

	// preload image
	imgPreload = new Image();

	imgPreload.onload=function(){

		// center lightbox and make sure that the top and left values are not negative
		// and the image placed outside the viewport
		var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
		var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);
		
		objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
		objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";


		objLightboxDetails.style.width = imgPreload.width + 'px';
		
		if(objLink.getAttribute('title')){
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			objCaption.innerHTML = objLink.getAttribute('title');
		} else {
			objCaption.style.display = 'none';
		}
		
		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			//pause(250);
			pause(250, function() {
				});
		} 

		if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

		// Hide select boxes as they will 'peek' through the image in IE
		selects = document.getElementsByTagName("select");
        for (i = 0; i != selects.length; i++) {
                selects[i].style.visibility = "hidden";
               // selects[i].style.display = "none";
                
        }

		opacity('overlay', 0, 65, 1500);
		//pause(550);
		pause(550, function() {
				opacity('lightbox', 0, 100, 1000);	
			});
		//opacity('lightbox', 0, 100, 1500);
		//setTimeout("opacity('lightbox', 0, 100, 500)",1600);
		
		//objLightbox.style.display = 'block';

		// After image is loaded, update the overlay height as the new image might have
		// increased the overall page height.
		arrayPageSize = getPageSize();
		objOverlay.style.height = (arrayPageSize[1] + 'px');
		
		// Check for 'x' keypress
		listenKey();
	
		return false;
	}
	
	if(document.getElementById("store-locator-details")){
	imgPreload.src = objLink.href;
	}
	else{
	objImage.src = objLink.href;
	}
}





//
// hideLightbox()
//
function hideLayers()
{
objOverlay.style.display = 'none';
objLightbox.style.display = 'none';
}

function hideLightbox()
{
	document.onkeypress = '';
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

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

	// disable keypress listener
	//opacity('overlay', 65, 0, 50);
	//pause(500);
	//opacity('lightbox', 100, 0, 50);
	
	//setTimeout("hideLayers()",10);

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
	//objLightbox.style.position = 'absolute';
	//objLightbox.style.top = '80px';
	//objLightbox.style.left = '0px';

}




//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//

//smooth Fade

//change the opacity for different browsers
function changeOpac(opacity, id) {

    var object = document.getElementById(id).style;

    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
    object.display="block";
   // filter: progid:DXImageTransform.Microsoft.Alpha(opacity=" + opacity + ");
 
} 

function opacity(id, opacStart, opacEnd, millisec, callback) {

	checkOpac('overlay');
	checkOpac('lightbox');
	
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;
    

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
			document.onkeypress = '';
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
  
	/*
            if(i==0){
            alert(document.getElementById('overlay').style.display);
            document.getElementById('overlay').style.display = 'none';
            document.getElementById('lightbox').style.display = 'none';
            }
   */         
           
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
           // alert("val changed="+i);
            document.onkeypress = '';
            changeOp=setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
    if (typeof callback === "function") {
		callback.call();
    }
}


function initLightbox()
{

	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];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
			anchor.onclick = function () {showLightbox(this); return false;}
			//alert(anchor.getAttribute("href"));
			MM_preloadImages(anchor.getAttribute("href"));
		}

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "Storelightbox")){
			anchor.onclick = function () {showStoreLightbox(this); return false;}
		}
		
		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "printPage")){
			anchor.onclick = function () {printPage(); return false;}
		}
	}

	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="overlay">
	//		<a href="#" onclick="hideLightbox(); return false;"><img id="loadingImage" /></a>
	//	</div>
	// <div id="lightbox">
	//		<a href="#" onclick="hideLightbox(); return false;" title="Click anywhere to close image">
	//			<img id="closeButton" />		
	//			<img id="lightboxImage" />
	//		</a>
	//		<div id="lightboxDetails">
	//			<div id="lightboxCaption"></div>
	//			<div id="keyboardMsg"></div>
	//		</div>
	// </div>
	
	var objBody = document.getElementsByTagName("body").item(0);
	
	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	//objOverlay.onclick = function () {hideLightbox(); return false;}
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
    objOverlay.style.opacity = (0 / 100);
    objOverlay.style.MozOpacity = (0 / 100);
    objOverlay.style.KhtmlOpacity = (0 / 100);
   // objOverlay.style.filter = "alpha(opacity=" + 0 + ")";
 	
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
		var objBackImage = document.createElement("img");
		objBackImage.setAttribute('id','overlayBack');
    	objBackImage.setAttribute('src',UrlUtils.absoluteWebPath("/images/default/en/lightbox/blank.gif"));
		objOverlay.appendChild(objBackImage);
	
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	
	// preload and create loader image
	var imgPreloader = new Image();
	
	// if loader image found, create link to hide lightbox and create loadingimage
	imgPreloader.onload=function(){

		var objLoadingImageLink = document.createElement("a");
		objLoadingImageLink.setAttribute('href','#');
		objLoadingImageLink.onclick = function () {hideLightbox(); return false;}
		objOverlay.appendChild(objLoadingImageLink);
		
		var objLoadingImage = document.createElement("img");
		objLoadingImage.src = loadingImage;
		objLoadingImage.setAttribute('id','loadingImage');
		objLoadingImage.style.position = 'absolute';
		objLoadingImage.style.zIndex = '150';
		objLoadingImageLink.appendChild(objLoadingImage);

		imgPreloader.onload=function(){};	//	clear onLoad, as IE will flip out w/animated gifs

		return false;
	}

	imgPreloader.src = loadingImage;

	// create lightbox div, same note about styles as above
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '100';	
 	objLightbox.style.opacity = (0 / 100);
    objLightbox.style.MozOpacity = (0 / 100);
    objLightbox.style.KhtmlOpacity = (0 / 100);
    //objLightbox.style.filter = "alpha(opacity=" + 0 + ")";
	
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	
	// create link
	var objLink = document.createElement("a");
	//objLink.setAttribute('href','#');
	//objLink.setAttribute('title','Click to close');
	//objLink.onclick = function () {hideLightbox(); return false;}
	objLightbox.appendChild(objLink);
	// preload and create close button image
	var imgPreloadCloseButton = new Image();

	// if close button image found, 
	imgPreloadCloseButton.onload=function(){

		var objCloseButton = document.createElement("img");
		objCloseButton.src = closeButton;
		objCloseButton.setAttribute('id','closeButton');
		objCloseButton.style.position = 'absolute';
		objCloseButton.style.zIndex = '200';
		objLink.appendChild(objCloseButton);

		return false;
	}

	imgPreloadCloseButton.src = closeButton;


   	if(document.getElementById("store-locator-details")){
		//Map image
		
		
		var objMap = document.createElement("img");
		objMap.setAttribute('id','lightboxImage');
		
		preload_image = new Image(); 
		preload_image.src=document.getElementById("store-enlarge").href;
		
		objMap.src=preload_image.src;
		objLink.appendChild(objMap);
		
		//address content
		var objAddy = document.createElement("div");
		objAddy.setAttribute('id','lightboxContent');
		objAddy.innerHTML=document.getElementById("store-locator-address").innerHTML;
		objLightbox.appendChild(objAddy);
	}
	else{ 
	// create image
	var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	
	
	
		// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
		MM_preloadImages(anchor.getAttribute("href"));
		objImage.src=anchor.getAttribute("href");
			
		}
	}

	objLink.appendChild(objImage);
	}

	
	// create details div, a container for the caption and keyboard message
	var objLightboxDetails = document.createElement("div");
	objLightboxDetails.setAttribute('id','lightboxDetails');
	objLightbox.appendChild(objLightboxDetails);

	// create caption
	var objCaption = document.createElement("div");
	objCaption.setAttribute('id','lightboxCaption');
	objCaption.style.display = 'none';
	objLightboxDetails.appendChild(objCaption);

	// create keyboard message
	var objKeyboardMsg = document.createElement("div");
	objKeyboardMsg.setAttribute('id','keyboardMsg');
	objKeyboardMsg.innerHTML = '<a href="#" onclick="hideLightbox(); return false;" alt="Click to close" title="Click to close">Close</a>';
	objLightboxDetails.appendChild(objKeyboardMsg);


}




//
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}


addLoadEvent(initLightbox);	// run initLightbox onLoad