var Lightbox;LightboxOptions = Object.extend({fileLoadingImage:        'local/themes/awk/img/lightbox/loading.gif',fileBottomNavCloseImage: 'local/themes/awk/img/lightbox/closelabel_de.gif',langDownload: 			'hochauflösende Version herunterladen',langNext:				'nächstes Bild',langPrev:				'vorheriges Bild',langClose:				'schließen',overlayOpacity: 0.8,animate: true,resizeSpeed: 7,borderSize: 10,labelImage: "Bild",labelOf: "von"
}, 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:'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})
)
)
])
),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('img', { src: LightboxOptions.fileBottomNavCloseImage })
)]
)
])
),Builder.node('div', {id:'bottomNavAdd', style: 'display: none'}, [
Builder.node('a',{id:'bottomNavPrev', href: '#' },Builder.node('img', { src: 'img/lightbox/previmage.gif', alt: LightboxOptions.langPrev })
),Builder.node('a',{id:'bottomNavNext', href: '#' },Builder.node('img', { src: 'img/lightbox/nextimage.gif', alt: LightboxOptions.langNext })
),Builder.node('a',{id:'bottomNavDownload', href: '#' },Builder.node('img', { src: 'img/lightbox/download.gif', alt: 'Download', title: LightboxOptions.langDownload })
)
])
]));$('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));$('bottomNavPrev').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this));$('bottomNavNext').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this));var th = this;(function(){var ids = 
'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' + 
'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose bottomNavAdd bottomNavPrev bottomNavNext';$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, imageLink.id]);} else {this.imageArray = 
$$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
collect(function(anchor){ return [anchor.href, anchor.title, anchor.id]; }).
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();$('bottomNavPrev').hide();$('bottomNavNext').hide();$('bottomNavAdd').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.bottomNavAdd.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[this.activeImage][2].search(/download_.+/) != -1){var idstring = this.imageArray[this.activeImage][2].replace(/download_/g, "");var contentid = idstring.replace(/_.+/g, "");var downloadHash = idstring.replace(/.+_/g, "");$('bottomNavDownload').href = "_"+ contentid +".html?download=" + downloadHash;} else {$('bottomNavDownload').hide();}
if (this.imageArray.length > 1){this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + '  ' + this.imageArray.length).show();new Effect.Appear(this.bottomNavAdd, { duration: this.resizeDuration, delay: this.resizeDuration }) ;}
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();$('bottomNavPrev').show();}
if (this.activeImage < (this.imageArray.length - 1)) {this.nextLink.show();$('bottomNavNext').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) {  // mozilla
escapeKey = event.DOM_VK_ESCAPE;} else { // ie
escapeKey = 27;}
var key = String.fromCharCode(keycode).toLowerCase();if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
this.end();} else if ((key == 'p') || (keycode == 37)){ // display previous image
if (this.activeImage != 0){this.disableKeyboardNav();this.changeImage(this.activeImage - 1);}
} else if ((key == 'n') || (keycode == 39)){ // display next image
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 });new Effect.Fade(this.bottomNavAdd, { 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){ // 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
if(document.documentElement.clientWidth){windowWidth = document.documentElement.clientWidth;} else {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;}	
if(yScroll < windowHeight){pageHeight = windowHeight;} else {pageHeight = yScroll;}
if(xScroll < windowWidth){pageWidth = xScroll;} else {pageWidth = windowWidth;}
return [pageWidth,pageHeight];}
}
document.observe("dom:loaded", function () { Lightbox = new Lightbox(); });