function addEvent(object,type,handler)
{if(object.addEventListener){object.addEventListener(type,handler,false);}else if(object.attachEvent){object.attachEvent(['on',type].join(''),handler);}else{object[['on',type].join('')]=handler;}}
function WindowSize()
{this.w=0;this.h=0;return this.update();}
WindowSize.prototype.update=function()
{var d=document;this.w=(window.innerWidth)?window.innerWidth:(d.documentElement&&d.documentElement.clientWidth)?d.documentElement.clientWidth:d.body.clientWidth;this.h=(window.innerHeight)?window.innerHeight:(d.documentElement&&d.documentElement.clientHeight)?d.documentElement.clientHeight:d.body.clientHeight;return this;};function PageSize()
{this.win=new WindowSize();this.w=0;this.h=0;return this.update();}
PageSize.prototype.update=function()
{var d=document;this.w=(window.innerWidth&&window.scrollMaxX)?window.innerWidth+window.scrollMaxX:(d.body.scrollWidth>d.body.offsetWidth)?d.body.scrollWidth:d.body.offsetWidt;this.h=(window.innerHeight&&window.scrollMaxY)?window.innerHeight+window.scrollMaxY:(d.body.scrollHeight>d.body.offsetHeight)?d.body.scrollHeight:d.body.offsetHeight;this.win.update();if(this.w<this.win.w)this.w=this.win.w;if(this.h<this.win.h)this.h=this.win.h;return this;};function PagePos()
{this.x=0;this.y=0;return this.update();}
PagePos.prototype.update=function()
{var d=document;this.x=(window.pageXOffset)?window.pageXOffset:(d.documentElement&&d.documentElement.scrollLeft)?d.documentElement.scrollLeft:(d.body)?d.body.scrollLeft:0;this.y=(window.pageYOffset)?window.pageYOffset:(d.documentElement&&d.documentElement.scrollTop)?d.documentElement.scrollTop:(d.body)?d.body.scrollTop:0;return this;};function UserAgent()
{var ua=navigator.userAgent;this.isWinIE=this.isMacIE=false;this.isGecko=ua.match(/Gecko\//);this.isSafari=ua.match(/AppleWebKit/);this.isOpera=window.opera;if(document.all&&!this.isGecko&&!this.isSafari&&!this.isOpera){this.isWinIE=ua.match(/Win/);this.isMacIE=ua.match(/Mac/);this.isNewIE=(ua.match(/MSIE 5\.5/)||ua.match(/MSIE 6\.0/));}
return this;}
function LightBox(option)
{var self=this;self._imgs=new Array();self._wrap=null;self._box=null;self._open=-1;self._page=new PageSize();self._pos=new PagePos();self._ua=new UserAgent();self._expandable=false;self._expanded=false;self._expand=option.expandimg;self._shrink=option.shrinkimg;return self._init(option);}
LightBox.prototype={_init:function(option)
{var self=this;var d=document;if(!d.getElementsByTagName)return;var links=d.getElementsByTagName("a");for(var i=0;i<links.length;i++){var anchor=links[i];var num=self._imgs.length;if(!anchor.getAttribute("href")||anchor.getAttribute("rel")!="lightbox")continue;self._imgs[num]={src:anchor.getAttribute("href"),w:-1,h:-1,alt:'',cls:anchor.className};if(anchor.getAttribute("alt"))
self._imgs[num].alt=anchor.getAttribute("alt");else if(anchor.firstChild&&anchor.firstChild.getAttribute&&anchor.firstChild.getAttribute("alt"))
self._imgs[num].alt=anchor.firstChild.getAttribute("alt");anchor.onclick=self._genOpener(num);}
var body=d.getElementsByTagName("body")[0];self._wrap=self._createWrapOn(body,option.loadingimg);self._box=self._createBoxOn(body,option);return self;},_genOpener:function(num)
{var self=this;return function(){self._show(num);return false;}},_createWrapOn:function(obj,imagePath)
{var self=this;if(!obj)return null;var wrap=document.createElement('div');wrap.id='overlay';with(wrap.style){display='none';position='fixed';top='0px';left='0px';zIndex='900';width='100%';height='100%';}
if(self._ua.isWinIE)wrap.style.position='absolute';addEvent(wrap,"click",function(){self._close();});obj.appendChild(wrap);var imag=new Image;imag.onload=function(){var spin=document.createElement('img');spin.id='loadingImage';spin.src=imag.src;spin.style.position='relative';self._set_cursor(spin);addEvent(spin,'click',function(){self._close();});wrap.appendChild(spin);imag.onload=function(){};};if(imagePath!='')imag.src=imagePath;return wrap;},_createBoxOn:function(obj,option)
{var self=this;if(!obj)return null;var box=document.createElement('div');box.id='lightbox';with(box.style){display='none';position='absolute';zIndex='990';}
obj.appendChild(box);var img=document.createElement('img');img.id='lightboxImage';self._set_cursor(img);addEvent(img,'click',function(){self._close();});addEvent(img,'mouseover',function(){self._show_action();});addEvent(img,'mouseout',function(){self._hide_action();});box.appendChild(img);var zoom=document.createElement('img');zoom.id='actionImage';with(zoom.style){display='none';position='absolute';top='-10px';left='15px';zIndex='999';}
self._set_cursor(zoom);zoom.src=self._expand;addEvent(zoom,'mouseover',function(){self._show_action();});addEvent(zoom,'click',function(){self._zoom();});box.appendChild(zoom);addEvent(window,'resize',function(){self._set_size(true);});if(option.closeimg){var btn=document.createElement('img');btn.id='closeButton';with(btn.style){display='inline';position='absolute';left='-13px';top='5px';zIndex='999';}
btn.src=option.closeimg;self._set_cursor(btn);addEvent(btn,'click',function(){self._close();});box.appendChild(btn);}
var caption=document.createElement('span');caption.id='lightboxCaption';with(caption.style){display='none';position='absolute';zIndex='900';}
box.appendChild(caption);if(!option.effectpos)option.effectpos={x:0,y:0};else{if(option.effectpos.x=='')option.effectpos.x=0;if(option.effectpos.y=='')option.effectpos.y=0;}
var effect=new Image;effect.onload=function(){var effectImg=document.createElement('img');effectImg.id='effectImage';effectImg.src=effect.src;if(option.effectclass)effectImg.className=option.effectclass;with(effectImg.style){position='absolute';display='none';left=[option.effectpos.x,'px'].join('');;top=[option.effectpos.y,'px'].join('');zIndex='90';}
self._set_cursor(effectImg);addEvent(effectImg,'click',function(){effectImg.style.display='none';});box.appendChild(effectImg);};if(option.effectimg!='')effect.src=option.effectimg;return box;},_set_photo_size:function()
{var self=this;if(self._open==-1)return;var imag=self._box.firstChild;var targ={w:self._page.win.w-45,h:self._page.win.h-100};var orig={w:self._imgs[self._open].w,h:self._imgs[self._open].h};var ratio=1.0;if((orig.w>=targ.w||orig.h>=targ.h)&&orig.h&&orig.w)
ratio=((targ.w/orig.w)<(targ.h/orig.h))?targ.w/orig.w:targ.h/orig.h;imag.width=Math.floor(orig.w*ratio);imag.height=Math.floor(orig.h*ratio);self._expandable=(ratio<1.0)?true:false;if(self._ua.isWinIE)self._box.style.display="block";self._box.style.top=[self._pos.y+(self._page.win.h-imag.height-100)/2,'px'].join('');self._box.style.left=[((self._page.win.w-imag.width-35)/2),'px'].join('');self._show_caption(true);},_set_size:function(onResize)
{var self=this;if(self._open==-1)return;self._page.update();self._pos.update();var spin=self._wrap.firstChild;if(spin){var top=(self._page.win.h-spin.height)/2;if(self._wrap.style.position=='absolute')top+=self._pos.y;spin.style.top=[top,'px'].join('');spin.style.left=[(self._page.win.w-spin.width-40)/2,'px'].join('');}
if(self._ua.isWinIE){self._wrap.style.width=[self._page.win.w,'px'].join('');self._wrap.style.height=[self._page.h,'px'].join('');}
if(onResize)self._set_photo_size();},_show_action:function()
{var self=this;if(self._open==-1||!self._expandable)return;var obj=document.getElementById('actionImage');if(!obj)return;obj.src=(self._expanded)?self._shrink:self._expand;obj.style.display='inline';},_hide_action:function()
{var self=this;var obj=document.getElementById('actionImage');if(obj)obj.style.display='none';},_zoom:function()
{var self=this;if(self._expanded){self._set_photo_size();self._expanded=false;}else if(self._open>-1){var imag=self._box.firstChild;self._box.style.top=[self._pos.y,'px'].join('');self._box.style.left='0px';imag.width=self._imgs[self._open].w;imag.height=self._imgs[self._open].h;self._show_caption(false);self._expanded=true;}
self._show_action();},_show_caption:function(enable)
{var self=this;var caption=document.getElementById('lightboxCaption');if(!caption)return;if(caption.innerHTML.length==0||!enable){caption.style.display='none';}else{var imag=self._box.firstChild;with(caption.style){top=[imag.height+10,'px'].join('');left='0px';width=[imag.width+20,'px'].join('');display='block';}}},_show:function(num)
{var self=this;var imag=new Image;if(num<0||num>=self._imgs.length)return;var loading=document.getElementById('loadingImage');var caption=document.getElementById('lightboxCaption');var effect=document.getElementById('effectImage');self._open=num;self._set_size(false);self._wrap.style.display="block";if(loading)loading.style.display='inline';imag.onload=function(){if(self._imgs[self._open].w==-1){self._imgs[self._open].w=imag.width;self._imgs[self._open].h=imag.height;}
if(effect){effect.style.display=(!effect.className||self._imgs[self._open].cls==effect.className)?'block':'none';}
if(caption)caption.innerHTML=self._imgs[self._open].alt;self._set_photo_size();self._hide_action();self._box.style.display="block";self._box.firstChild.src=imag.src;self._box.firstChild.setAttribute('alt',self._imgs[self._open].alt);if(loading)loading.style.display='none';};self._expandable=false;self._expanded=false;imag.src=self._imgs[self._open].src;},_set_cursor:function(obj)
{var self=this;if(self._ua.isWinIE&&!self._ua.isNewIE)return;},_close:function()
{var self=this;self._open=-1;self._hide_action();self._wrap.style.display="none";self._box.style.display="none";}};addEvent(window,"load",function(){var lightbox=new LightBox({loadingimg:'http://greed-graphics.de/projekte/2010/images/clear.gif',shrinkimg:'http://greed-graphics.de/projekte/2010/images/clear.gif',expandimg:'http://greed-graphics.de/projekte/2010/images/clear.gif',effectimg:'http://www.greed-graphics.de/projekte/2010/images/close2.png',effectpos:{x:-40,y:-20},effectclass:'effectable',closeimg:'http://www.greed-graphics.de/projekte/2010/images/close2.png'});});