/* ----- lightbox.js ----- */
// http://www.cartanaescola.com.br/portal_javascripts/lightbox.js?original=1
var fileLoadingImage="loading.gif";var fileBottomNavCloseImage="close.gif";var resizeSpeed=7;var borderSize=10;var imageArray=new Array;var activeImage;if(resizeSpeed>10){resizeSpeed=10}
if(resizeSpeed<1){resizeSpeed=1}
resizeDuration=(11-resizeSpeed) * 0.15;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"},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=1;i<this.length;i++){if(this[i][0]==this[i-1][0]){this.splice(i,1)}}}
Array.prototype.empty=function(){for(i=0;i<=this.length;i++){this.shift()}}
var Lightbox=Class.create();Lightbox.prototype={initialize: function(){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(){myLightbox.start(this);return false}}}
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();return false}
objBody.appendChild(objOverlay);var objLightbox=document.createElement("div");objLightbox.setAttribute('id','lightbox');objLightbox.style.display='none';objBody.appendChild(objLightbox);var objOuterImageContainer=document.createElement("div");objOuterImageContainer.setAttribute('id','outerImageContainer');objLightbox.appendChild(objOuterImageContainer);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');objImageDataContainer.className='clearfix';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 objCaptionTitle=document.createElement("span");objCaptionTitle.setAttribute('id','captionTitle');objImageDetails.appendChild(objCaptionTitle);var objCaption=document.createElement("span");objCaption.setAttribute('id','caption');objImageDetails.appendChild(objCaption);var objCreditos=document.createElement("span");objCreditos.setAttribute('id','creditos');objImageDetails.appendChild(objCreditos);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)},start: function(imageLink){hideSelectBoxes();var arrayPageSize=getPageSize();Element.setHeight('overlay',arrayPageSize[1]);new Effect.Appear('overlay',{duration:0.2,from:0.0,to:0.8});imageArray=[];imageNum=0;if(!document.getElementsByTagName){return}
var anchors=document.getElementsByTagName('a');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 arrayPageSize=getPageSize();var arrayPageScroll=getPageScroll();var lightboxTop=arrayPageScroll[1]+(arrayPageSize[3]/15);Element.setTop('lightbox',lightboxTop);Element.show('lightbox');this.changeImage(imageNum)},changeImage: function(imageNum){activeImage=imageNum;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.src=imageArray[activeImage][0]},resizeImageContainer: function(imgWidth,imgHeight){this.wCur=Element.getWidth('outerImageContainer');this.hCur=Element.getHeight('outerImageContainer');this.xScale=((imgWidth+(borderSize * 2))/this.wCur) * 100;this.yScale=((imgHeight+(borderSize * 2))/this.hCur) * 100;wDiff=(this.wCur-borderSize * 2)-imgWidth;hDiff=(this.hCur-borderSize * 2)-imgHeight;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',imgWidth+(borderSize * 2));this.showImage()},showImage: function(){Element.hide('loading');new Effect.Appear('lightboxImage',{duration:0.5,queue:'end',afterFinish: function(){myLightbox.updateDetails()}});this.preloadNeighborImages()},updateDetails: function(){Element.show('captionTitle');Element.show('caption');Element.show('creditos');caption=imageArray[activeImage][1].split("|");Element.setInnerHTML('captionTitle',caption[0]);Element.setInnerHTML('caption',caption[1]);Element.setInnerHTML('creditos',caption[2]);if(imageArray.length>1){Element.show('numberDisplay');Element.setInnerHTML('numberDisplay',"Image "+eval(activeImage+1)+" of "+imageArray.length)}
new Effect.Parallel([new Effect.SlideDown('imageDataContainer',{sync:true,duration:resizeDuration+0.25,from:0.0,to:1.0}),new Effect.Appear('imageDataContainer',{sync:true,duration:1.0})],{duration:0.65,afterFinish: function(){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} else{keycode=e.which}
key=String.fromCharCode(keycode).toLowerCase();if((key=='x')||(key=='o')||(key=='c')){myLightbox.end()} else if(key=='p'){if(activeImage!=0){myLightbox.disableKeyboardNav();myLightbox.changeImage(activeImage-1)}} else if(key=='n'){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:0.2});showSelectBoxes()}}
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 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(){selects=document.getElementsByTagName("select");for(i=0;i!=selects.length;i++){selects[i].style.visibility="visible"}}
function hideSelectBoxes(){selects=document.getElementsByTagName("select");for(i=0;i!=selects.length;i++){selects[i].style.visibility="hidden"}}
function pause(numberMillis){var now=new Date();var exitTime=now.getTime()+numberMillis;while(true){now=new Date();if(now.getTime()>exitTime)
return}}
function initLightbox(){myLightbox=new Lightbox()}
Event.observe(window,'load',initLightbox,false);