LightboxOptions = Object.extend({ fileLoadingImage: '../images/loading.gif', fileBottomNavCloseImage: '../images/closelabel.gif', overlayOpacity: 0.8, animate: false, resizeSpeed: 10, borderSize: 10, labelImage: "Image", labelOf: "of" }, window.LightboxOptions || {});
var Lightbox = Class.create();
Lightbox.prototype = {
    imageArray: [],
    activeImage: undefined,
    initialize: function() {this.updateImageList();this.keyboardAction = this.keyboardAction.bindAsEventListener(this);if (LightboxOptions.resizeSpeed > 10) LightboxOptions.resizeSpeed = 10;if (LightboxOptions.resizeSpeed < 1)  LightboxOptions.resizeSpeed = 1;this.resizeDuration = LightboxOptions.animate ? ((11 - LightboxOptions.resizeSpeed) * 0.15) : 0;this.overlayDuration = LightboxOptions.animate ? 0.2 : 0;var size = (LightboxOptions.animate ? 250 : 1) + 'px';var objBody = $$('body')[0];objBody.appendChild(Builder.node('div',{id:'overlay'}));objBody.appendChild(Builder.node('div',{id:'lightbox'}, [Builder.node('div', {id:'imageDataContainer'},Builder.node('div',{id:'imageData'}, [Builder.node('div',{id:'imageDetails'}, [Builder.node('span',{id:'caption'}),Builder.node('span',{id:'numberDisplay'})]),Builder.node('div',{id:'bottomNav'},Builder.node('a',{id:'bottomNavClose', href: '#' }))])),Builder.node('div',{id:'outerImageContainer'}, Builder.node('div',{id:'imageContainer'}, [Builder.node('img',{id:'lightboxImage'}), Builder.node('div',{id:'hoverNav'}, [Builder.node('a',{id:'prevLink', href: '#' }),Builder.node('a',{id:'nextLink', href: '#' })]),Builder.node('div',{id:'loading'}, Builder.node('a',{id:'loadingLink', href: '#' }, Builder.node('img', {src: LightboxOptions.fileLoadingImage})))]))]));$('overlay').hide().observe('click', (function() { this.end(); }).bind(this));$('lightbox').hide().observe('click', (function(event) { if (event.element().id == 'lightbox') this.end(); }).bind(this));$('outerImageContainer').setStyle({ width: size, height: size });$('prevLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this));$('nextLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this));$('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));$('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));var th = this;(function(){var ids = 'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' + 'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose';$w(ids).each(function(id){ th[id] = $(id); });}).defer();},
    updateImageList: function() {this.updateImageList = Prototype.emptyFunction;document.observe('click', (function(event){var target = event.findElement('a[rel^=lightbox]') || event.findElement('area[rel^=lightbox]');if (target) {event.stop();this.start(target);}}).bind(this));},
    start: function(imageLink) {$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' });var arrayPageSize = this.getPageSize();$('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity });this.imageArray = [];var imageNum = 0;if ((imageLink.rel == 'lightbox')){this.imageArray.push([imageLink.href, imageLink.title]);} else {this.imageArray = $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').collect(function(anchor){ return [anchor.href, anchor.title]; }).uniq();while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }}var arrayPageScroll = document.viewport.getScrollOffsets();var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / 10);var lightboxLeft = arrayPageScroll[0];this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show();this.changeImage(imageNum);},
    changeImage: function(imageNum) {this.activeImage = imageNum;if (LightboxOptions.animate) this.loading.show();this.lightboxImage.hide();this.hoverNav.hide();this.prevLink.hide();this.nextLink.hide();this.imageDataContainer.setStyle({opacity: .0001});this.numberDisplay.hide();var imgPreloader = new Image();imgPreloader.onload = (function(){this.lightboxImage.src = this.imageArray[this.activeImage][0];this.resizeImageContainer(imgPreloader.width, imgPreloader.height);}).bind(this);imgPreloader.src = this.imageArray[this.activeImage][0];},
    resizeImageContainer: function(imgWidth, imgHeight) {var widthCurrent  = this.outerImageContainer.getWidth();var heightCurrent = this.outerImageContainer.getHeight();var widthNew  = (imgWidth  + LightboxOptions.borderSize * 2);var heightNew = (imgHeight + LightboxOptions.borderSize * 2);var xScale = (widthNew  / widthCurrent)  * 100;var yScale = (heightNew / heightCurrent) * 100;var wDiff = widthCurrent - widthNew;var hDiff = heightCurrent - heightNew;if (hDiff != 0) new Effect.Scale(this.outerImageContainer, yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'}); if (wDiff != 0) new Effect.Scale(this.outerImageContainer, xScale, {scaleY: false, duration: this.resizeDuration, delay: this.resizeDuration}); var timeout = 0;if ((hDiff == 0) && (wDiff == 0)){timeout = 100;if (Prototype.Browser.IE) timeout = 250;}(function(){this.prevLink.setStyle({ height: imgHeight + 'px' });this.nextLink.setStyle({ height: imgHeight + 'px' });this.imageDataContainer.setStyle({ width: widthNew + 'px' });this.showImage();}).bind(this).delay(timeout / 1000);},
    showImage: function(){this.loading.hide();new Effect.Appear(this.lightboxImage, {duration: this.resizeDuration,queue: 'end',afterFinish: (function(){ this.updateDetails(); }).bind(this) });this.preloadNeighborImages();},
    updateDetails: function() {if (this.imageArray[this.activeImage][1] != ""){this.caption.update(this.imageArray[this.activeImage][1]).show();}if (this.imageArray.length > 1){this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + '  ' + this.imageArray.length).show();}new Effect.Parallel([new Effect.SlideDown(this.imageDataContainer, { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }),new Effect.Appear(this.imageDataContainer, { sync: true, duration: this.resizeDuration })],{duration: this.resizeDuration,afterFinish: (function() {var arrayPageSize = this.getPageSize();this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });this.updateNav();}).bind(this)});},
    updateNav: function() {this.hoverNav.show();if (this.activeImage > 0) this.prevLink.show();if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();this.enableKeyboardNav();},
    enableKeyboardNav: function() {document.observe('keydown', this.keyboardAction); },
    disableKeyboardNav: function() {document.stopObserving('keydown', this.keyboardAction); },
    keyboardAction: function(event) {var keycode = event.keyCode;var escapeKey;if (event.DOM_VK_ESCAPE) {escapeKey = event.DOM_VK_ESCAPE;} else {escapeKey = 27;}var key = String.fromCharCode(keycode).toLowerCase();if (key.match(/x|o|c/) || (keycode == escapeKey)){this.end();} else if ((key == 'p') || (keycode == 37)){if (this.activeImage != 0){this.disableKeyboardNav();this.changeImage(this.activeImage - 1);}} else if ((key == 'n') || (keycode == 39)){if (this.activeImage != (this.imageArray.length - 1)){this.disableKeyboardNav();this.changeImage(this.activeImage + 1);}}},
    preloadNeighborImages: function(){var preloadNextImage, preloadPrevImage;if (this.imageArray.length > this.activeImage + 1){preloadNextImage = new Image();preloadNextImage.src = this.imageArray[this.activeImage + 1][0];}if (this.activeImage > 0){preloadPrevImage = new Image();preloadPrevImage.src = this.imageArray[this.activeImage - 1][0];}},
    end: function() {this.disableKeyboardNav();this.lightbox.hide();new Effect.Fade(this.overlay, { duration: this.overlayDuration });$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });},
    getPageSize: function() {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;}return [pageWidth,pageHeight];}
}
document.observe('dom:loaded', function () { new Lightbox(); });