var sbloadingImage='/images/loader.gif';
var alphaTrans=75;

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 returnLink=objLink;
var objBody=document.getElementsByTagName("body").item(0);
var objOverlay=document.createElement("div");
objOverlay.setAttribute('id','overlay');
objOverlay.onclick=function() {
hideLightbox(returnLink);
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%';
objOverlay.style.opacity=alphaTrans/100;
objOverlay.style.MozOpacity=alphaTrans/100;
objOverlay.style.filter='alpha(opacity='+alphaTrans+')';
objBody.insertBefore(objOverlay, objBody.firstChild);
var arrayPageSize=getPageSize();
var arrayPageScroll=getPageScroll();

var imgPreloader=new Image();
var objLoadingImageLink=document.createElement("a");
objLoadingImageLink.setAttribute('href','#');
objLoadingImageLink.setAttribute('title','Zum Schliessen anklicken');
objLoadingImageLink.onclick=function() {
hideLightbox(returnLink);
return false;
}
objOverlay.appendChild(objLoadingImageLink);
var objLoadingImage=document.createElement("img");
objLoadingImage.src=sbloadingImage;
objLoadingImage.setAttribute('id','sbloadingImage');
objLoadingImage.style.position='absolute';
objLoadingImage.style.zIndex='150';
objLoadingImageLink.appendChild(objLoadingImage);
imgPreloader.src=sbloadingImage;

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 holdFocus=document.createElement("a");
holdFocus.setAttribute('id','holdFocus');
holdFocus.setAttribute('href','#');
holdFocus.setAttribute('title','Zum Schliessen anklicken');
objLightbox.insertBefore(holdFocus,objLightbox.firstChild);
var closeLink=document.createElement("a");
closeLink.setAttribute('id','closeLink');
closeLink.setAttribute('href','#');
closeLink.setAttribute('title','Zum Schliessen anklicken');
closeLink.onclick=function() {
hideLightbox();
return false;
}
objLightbox.appendChild(closeLink);

var objImage=document.createElement("img");
objImage.setAttribute('id','lightboxImage');
closeLink.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="#" title="Zum Schliessen anklicken" onclick="hideLightbox(); return false;">Fenster schließen X</a>';
objLightboxDetails.appendChild(objKeyboardMsg);

var objOverlay=document.getElementById('overlay');
var objLightbox=document.getElementById('lightbox');
var objCaption=document.getElementById('lightboxCaption');
var objImage=document.getElementById('lightboxImage');
var objLoadingImage=document.getElementById('sbloadingImage');
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('nicetitle')){
objCaption.style.display='block';
objCaption.innerHTML='<strong>Titel: </strong>'+objLink.getAttribute('nicetitle');
}else if(objLink.getAttribute('title')){
objCaption.style.display='block';
objCaption.innerHTML='<strong>Titel: </strong>'+objLink.getAttribute('title');
}else{
objCaption.style.display='none';
}
if(navigator.appVersion.indexOf("MSIE")!=-1){
//pause(100);
}
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');
holdFocus.focus();
listenKey();
return false;
}
imgPreload.src=objLink.href;
}


function hideLightbox(returnLink) {
	var focusLink=returnLink;
	var anchors = document.getElementsByTagName("a");
	var activeImage=document.getElementById('lightboxImage');
	for(var i=0;i<anchors.length;i++){
	var givebackFocus=anchors[i];
	var relAttribute = String(givebackFocus.getAttribute('rel'));
	if(!activeImage.getAttribute("src")) {
	if(givebackFocus.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
	if((focusLink.href.match(givebackFocus.getAttribute("href")))&&(!navigator.userAgent.match('MSIE 5.0'))){
	givebackFocus.focus();
	}
	}
	}else if(givebackFocus.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
	if((activeImage.getAttribute("src").match(givebackFocus.getAttribute("href")))&&(!navigator.userAgent.match('MSIE 5.0'))){
	givebackFocus.focus();
	}
	}
	}
	var objBody=document.getElementsByTagName("body").item(0);
	if(document.getElementById('overlay')==objBody.firstChild) {
	objBody.removeChild(objBody.firstChild);
	}
	if(document.getElementById('lightbox')==objBody.firstChild) {
	objBody.removeChild(objBody.firstChild);
	}
	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];
	var relAttribute=String(anchor.getAttribute('rel'));
	if(anchor.getAttribute('href')&&(relAttribute.toLowerCase().match('lightbox'))){
	anchor.onclick=function() {
	showLightbox(this);
	return false;
	}
	}
	}
}


window.onload=function(){
	if((!navigator.userAgent.match('Netscape6'))&&document.getElementById&&document.createTextNode){
	initLightbox();
	}
}