var loadingImage = '/images/loading.gif';		
var closeButton = '';		

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 = '<a href="#" style="font-family:Arial;font-size:11px;color:#333333;" onclick="hideLightbox(); return false;"><img src="http://www.acca.it/images/close.gif" align="absmiddle" hspace="4">Chiudi</a>';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);