var fileLoadingImage = "lightbox/images/loading.gif"; var fileBottomNavCloseImage = "lightbox/images/closelabel.gif"; var overlayOpacity = 0.8; var animate = true; var resizeSpeed = 7; var borderSize = 10; var imageArray = new Array; var activeImage; if(animate == true){ overlayDuration = 0.2; if(resizeSpeed > 10){ resizeSpeed = 10;}
if(resizeSpeed < 1){ resizeSpeed = 1;}
resizeDuration = (11 - resizeSpeed) * 0.15;} else { overlayDuration = 0; resizeDuration = 0;}
Object.extend(Element, { getWidth: function(element) { element = $(element); return element.offsetWidth;}, setWidth: function(element,w) { element = $(element); element.style.width = w +"px";}, setHeight: function(element,h) { element = $(element); element.style.height = h +"px";}, setTop: function(element,t) { element = $(element); element.style.top = t +"px";}, setLeft: function(element,l) { element = $(element); element.style.left = l +"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;}
}); Array.prototype.removeDuplicates = function () { for(i = 0; i < this.length; i++){ for(j = this.length-1; j>i; j--){ if(this[i][0] == this[j][0]){ this.splice(j,1);}
}
}
}
Array.prototype.empty = function () { for(i = 0; i <= this.length; i++){ this.shift();}
}
var Lightbox = Class.create(); Lightbox.prototype = { initialize: function() { this.updateImageList(); var objBody = document.getElementsByTagName("body").item(0); var objOverlay = document.createElement("div"); objOverlay.setAttribute('id','overlay'); objOverlay.style.display = 'none'; objOverlay.onclick = function() { myLightbox.end();}
objBody.appendChild(objOverlay); var objLightbox = document.createElement("div"); objLightbox.setAttribute('id','lightbox'); objLightbox.style.display = 'none'; objLightbox.onclick = function(e) { if (!e) var e = window.event; var clickObj = Event.element(e).id; if ( clickObj == 'lightbox') { myLightbox.end();}
}; objBody.appendChild(objLightbox); var objOuterImageContainer = document.createElement("div"); objOuterImageContainer.setAttribute('id','outerImageContainer'); objLightbox.appendChild(objOuterImageContainer); if(animate){ Element.setWidth('outerImageContainer', 250); Element.setHeight('outerImageContainer', 250);} else { Element.setWidth('outerImageContainer', 1); Element.setHeight('outerImageContainer', 1);}
var objImageContainer = document.createElement("div"); objImageContainer.setAttribute('id','imageContainer'); objOuterImageContainer.appendChild(objImageContainer); var objLightboxImage = document.createElement("img"); objLightboxImage.setAttribute('id','lightboxImage'); objImageContainer.appendChild(objLightboxImage); var objHoverNav = document.createElement("div"); objHoverNav.setAttribute('id','hoverNav'); objImageContainer.appendChild(objHoverNav); 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); 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.onclick = function() { myLightbox.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'); 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.onclick = function() { myLightbox.end(); return false;}
objBottomNav.appendChild(objBottomNavCloseLink); var objBottomNavCloseImage = document.createElement("img"); objBottomNavCloseImage.setAttribute('src', fileBottomNavCloseImage); objBottomNavCloseLink.appendChild(objBottomNavCloseImage);}, updateImageList: function() { if (!document.getElementsByTagName){ return;}
var anchors = document.getElementsByTagName('a'); var areas = document.getElementsByTagName('area'); for (var i=0; i<anchors.length; i++){ var anchor = anchors[i]; var relAttribute = String(anchor.getAttribute('rel')); if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){ anchor.onclick = function () {myLightbox.start(this); return false;}
}
}
for (var i=0; i< areas.length; i++){ var area = areas[i]; var relAttribute = String(area.getAttribute('rel')); if (area.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){ area.onclick = function () {myLightbox.start(this); return false;}
}
}
}, start: function(imageLink) { hideSelectBoxes(); hideFlash(); var arrayPageSize = getPageSize(); Element.setWidth('overlay', arrayPageSize[0]); Element.setHeight('overlay', arrayPageSize[1]); new Effect.Appear('overlay', { duration: overlayDuration, from: 0.0, to: overlayOpacity }); imageArray = []; imageNum = 0; if (!document.getElementsByTagName){ return;}
var anchors = document.getElementsByTagName( imageLink.tagName); if((imageLink.getAttribute('rel') == 'lightbox')){ imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));} else { for (var i=0; i<anchors.length; i++){ var anchor = anchors[i]; if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){ imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title')));}
}
imageArray.removeDuplicates(); while(imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
}
var arrayPageScroll = getPageScroll(); var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 10); var lightboxLeft = arrayPageScroll[0]; Element.setTop('lightbox', lightboxTop); Element.setLeft('lightbox', lightboxLeft); Element.show('lightbox'); this.changeImage(imageNum);}, changeImage: function(imageNum) { activeImage = imageNum; if(animate){ Element.show('loading');}
Element.hide('lightboxImage'); Element.hide('hoverNav'); Element.hide('prevLink'); Element.hide('nextLink'); Element.hide('imageDataContainer'); Element.hide('numberDisplay'); imgPreloader = new Image(); imgPreloader.onload=function(){ Element.setSrc('lightboxImage', imageArray[activeImage][0]); myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height); imgPreloader.onload=function(){};}
imgPreloader.src = imageArray[activeImage][0];}, resizeImageContainer: function( imgWidth, imgHeight) { this.widthCurrent = Element.getWidth('outerImageContainer'); this.heightCurrent = Element.getHeight('outerImageContainer'); var widthNew = (imgWidth + (borderSize * 2)); var heightNew = (imgHeight + (borderSize * 2)); this.xScale = ( widthNew / this.widthCurrent) * 100; this.yScale = ( heightNew / this.heightCurrent) * 100; wDiff = this.widthCurrent - widthNew; hDiff = this.heightCurrent - heightNew; 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((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', widthNew); this.showImage();}, showImage: function(){ Element.hide('loading'); new Effect.Appear('lightboxImage', { duration: resizeDuration, queue: 'end', afterFinish: function(){ myLightbox.updateDetails();} }); this.preloadNeighborImages();}, updateDetails: function() { if(imageArray[activeImage][1]){ Element.show('caption'); Element.setInnerHTML( 'caption', imageArray[activeImage][1]);}
if(imageArray.length > 1){ Element.show('numberDisplay'); Element.setInnerHTML( 'numberDisplay', "Image " + eval(activeImage + 1) + " of " + imageArray.length + ". (Hover for next/previous)");}
new Effect.Parallel( [ new Effect.SlideDown( 'imageDataContainer', { sync: true, duration: resizeDuration, from: 0.0, to: 1.0 }), new Effect.Appear('imageDataContainer', { sync: true, duration: resizeDuration }) ], { duration: resizeDuration, afterFinish: function() { var arrayPageSize = getPageSize(); Element.setHeight('overlay', arrayPageSize[1]); myLightbox.updateNav();}
} );}, updateNav: function() { Element.show('hoverNav'); if(activeImage != 0){ Element.show('prevLink'); document.getElementById('prevLink').onclick = function() { myLightbox.changeImage(activeImage - 1); return false;}
}
if(activeImage != (imageArray.length - 1)){ Element.show('nextLink'); document.getElementById('nextLink').onclick = function() { myLightbox.changeImage(activeImage + 1); return false;}
}
this.enableKeyboardNav();}, enableKeyboardNav: function() { document.onkeydown = this.keyboardAction;}, disableKeyboardNav: function() { document.onkeydown = '';}, keyboardAction: function(e) { if (e == null) { keycode = event.keyCode; escapeKey = 27;} else { keycode = e.keyCode; escapeKey = e.DOM_VK_ESCAPE;}
key = String.fromCharCode(keycode).toLowerCase(); if((key == 'x') || (key == 'o') || (key == 'c') || (keycode == escapeKey)){ myLightbox.end();} else if((key == 'p') || (keycode == 37)){ if(activeImage != 0){ myLightbox.disableKeyboardNav(); myLightbox.changeImage(activeImage - 1);}
} else if((key == 'n') || (keycode == 39)){ if(activeImage != (imageArray.length - 1)){ myLightbox.disableKeyboardNav(); myLightbox.changeImage(activeImage + 1);}
}
}, 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: function() { this.disableKeyboardNav(); Element.hide('lightbox'); new Effect.Fade('overlay', { duration: overlayDuration}); showSelectBoxes(); showFlash();}
}
function getPageScroll(){ var xScroll, yScroll; if (self.pageYOffset) { yScroll = self.pageYOffset; xScroll = self.pageXOffset;} else if (document.documentElement && document.documentElement.scrollTop){ yScroll = document.documentElement.scrollTop; xScroll = document.documentElement.scrollLeft;} else if (document.body) { yScroll = document.body.scrollTop; xScroll = document.body.scrollLeft;}
arrayPageScroll = new Array(xScroll,yScroll)
return arrayPageScroll;}
function getPageSize(){ var xScroll, yScroll; if (window.innerHeight && window.scrollMaxY) { xScroll = window.innerWidth + window.scrollMaxX; 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) { if(document.documentElement.clientWidth){ windowWidth = document.documentElement.clientWidth;} else { 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 = xScroll;} else { pageWidth = windowWidth;}
arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
return arrayPageSize;}
function getKey(e){ if (e == null) { keycode = event.keyCode;} else { keycode = e.which;}
key = String.fromCharCode(keycode).toLowerCase(); if(key == 'x'){ }
}
function listenKey () { document.onkeypress = getKey;}
function showSelectBoxes(){ var selects = document.getElementsByTagName("select"); for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "visible";}
}
function hideSelectBoxes(){ var selects = document.getElementsByTagName("select"); for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "hidden";}
}
function showFlash(){ var flashObjects = document.getElementsByTagName("object"); for (i = 0; i < flashObjects.length; i++) { flashObjects[i].style.visibility = "visible";}
var flashEmbeds = document.getElementsByTagName("embed"); for (i = 0; i < flashEmbeds.length; i++) { flashEmbeds[i].style.visibility = "visible";}
}
function hideFlash(){ var flashObjects = document.getElementsByTagName("object"); for (i = 0; i < flashObjects.length; i++) { flashObjects[i].style.visibility = "hidden";}
var flashEmbeds = document.getElementsByTagName("embed"); for (i = 0; i < flashEmbeds.length; i++) { flashEmbeds[i].style.visibility = "hidden";}
}
function pause(ms){ var date = new Date(); curDate = null; do{var curDate = new Date();}
while( curDate - date < ms);}
function initLightbox() { myLightbox = new Lightbox();}
Event.observe(window, 'load', initLightbox, false);