/*
Lightbox JS: Fullsize Image Overlays
by Lokesh Dhakar-http://www.huddletogether.com
*/
var loadingImage='images/loading.gif';
var closeButton='images/close.gif';
function getPageScroll(){
var yScroll;
if(self.pageYOffset){yScroll=self.pageYOffset;}else if(document.documentElement && document.documentElement.scrollTop){yScroll=document.documentElement.scrollTop;
}else if(document.body){yScroll=document.body.scrollTop;}
arrayPageScroll=new Array('',yScroll)
return arrayPageScroll;}
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){
xScroll=document.body.scrollWidth;
yScroll=document.body.scrollHeight;
}else{xScroll=document.body.offsetWidth;yScroll=document.body.offsetHeight;}
var windowWidth, windowHeight;
if(self.innerHeight){windowWidth=self.innerWidth;windowHeight=self.innerHeight;}else if(document.documentElement && document.documentElement.clientHeight){
windowWidth=document.documentElement.clientWidth;windowHeight=document.documentElement.clientHeight;
}else if(document.body){windowWidth=document.body.clientWidth;windowHeight=document.body.clientHeight;}
if(yScroll<windowHeight){pageHeight=windowHeight;}else{pageHeight=yScroll;}
if(xScroll<windowWidth){pageWidth=windowWidth;}else{pageWidth=xScroll;}
arrayPageSize=new Array(pageWidth,pageHeight,windowWidth,windowHeight)
return arrayPageSize;}
function pause(numberMillis){
var now=new Date();var exitTime=now.getTime()+numberMillis;
while(true){now=new Date();
if(now.getTime() > exitTime)
return;}}
function getKey(e){
if(e==null){keycode=event.keyCode;}else{keycode=e.which;}
key=String.fromCharCode(keycode).toLowerCase();
if(key=='x'){hideLightbox();}}
function listenKey (){document.onkeypress=getKey;}
function showLightbox(objLink){
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();
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';}
objOverlay.style.height=(arrayPageSize[1]+'px');
objOverlay.style.display='block';
imgPreload=new Image();
imgPreload.onload=function(){
objImage.src=objLink.href;
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.innerHTML=objLink.getAttribute('title');}else{objCaption.style.display='none';}
if(navigator.appVersion.indexOf("MSIE")!=-1){pause(250);}
if(objLoadingImage){objLoadingImage.style.display='none';}
selects=document.getElementsByTagName("select");
for(i=0;i!=selects.length;i++){selects[i].style.visibility="hidden";}
objLightbox.style.display='block';
arrayPageSize=getPageSize();
objOverlay.style.height=(arrayPageSize[1]+'px');
listenKey();return false;}
imgPreload.src=objLink.href;}
function hideLightbox(){
objOverlay=document.getElementById('overlay');
objLightbox=document.getElementById('lightbox');
objOverlay.style.display='none';
objLightbox.style.display='none';
selects=document.getElementsByTagName("select");
for(i=0;i!=selects.length;i++){selects[i].style.visibility="visible";}
document.onkeypress='';}
function initLightbox(){
if(!document.getElementsByTagName){return;}
var anchors=document.getElementsByTagName("a");
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;}}}
var objBody=document.getElementsByTagName("body").item(0);
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%';
objBody.insertBefore(objOverlay, objBody.firstChild);
var arrayPageSize=getPageSize();
var arrayPageScroll=getPageScroll();
var imgPreloader=new Image();
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(){};return false;}
imgPreloader.src=loadingImage;
var objLightbox=document.createElement("div");
objLightbox.setAttribute('id','lightbox');
objLightbox.style.display='none';
objLightbox.style.position='absolute';
objLightbox.style.zIndex='100';
objBody.insertBefore(objLightbox, objOverlay.nextSibling);
var objLink=document.createElement("a");
objLink.setAttribute('href','#');
objLink.setAttribute('title','Click to close');
objLink.onclick=function (){hideLightbox(); return false;}
objLightbox.appendChild(objLink);
var imgPreloadCloseButton=new Image();
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;
var objImage=document.createElement("img");
objImage.setAttribute('id','lightboxImage');
objLink.appendChild(objImage);
var objLightboxDetails=document.createElement("div");
objLightboxDetails.setAttribute('id','lightboxDetails');
objLightbox.appendChild(objLightboxDetails);
var objCaption=document.createElement("div");
objCaption.setAttribute('id','lightboxCaption');
objCaption.style.display='none';
objLightboxDetails.appendChild(objCaption);
var objKeyboardMsg=document.createElement("div");
objKeyboardMsg.setAttribute('id','keyboardMsg');
objKeyboardMsg.innerHTML='press <a href="#" onclick="hideLightbox(); return false;"><kbd>x</kbd></a> to close';
objLightboxDetails.appendChild(objKeyboardMsg);}
function addLoadEvent(func){var oldonload=window.onload;if(typeof window.onload!='function'){window.onload=func;}else{window.onload=function(){oldonload();func();}}}
addLoadEvent(initLightbox);