// -----------------------------------------------------------------------------------





//





//	Lightbox v2.02





//	by Lokesh Dhakar - http://www.huddletogether.com





//	3/31/06





//





//	For more information on this script, visit:





//	http://huddletogether.com/projects/lightbox2/





//





//	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/





//	





//	Credit also due to those who have helped, inspired, and made their code available to the public.





//	Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.org), Thomas Fuchs(mir.aculo.us), and others.





//





//





// -----------------------------------------------------------------------------------





/*











	Table of Contents





	-----------------





	Configuration





	Global Variables











	Extending Built-in Objects	





	- Object.extend(Element)





	- Array.prototype.removeDuplicates()





	- Array.prototype.empty()











	Lightbox Class Declaration





	- initialize()





	- start()





	- changeImage()





	- resizeImageContainer()





	- showImage()





	- updateDetails()





	- updateNav()





	- enableKeyboardNav()





	- disableKeyboardNav()





	- keyboardAction()





	- preloadNeighborImages()





	- end()





	





	Miscellaneous Functions





	- getPageScroll()





	- getPageSize()





	- getKey()





	- listenKey()





	- showSelectBoxes()





	- hideSelectBoxes()





	- pause()





	- initLightbox()





	





	Function Calls





	- addLoadEvent(initLightbox)





	





*/





// -----------------------------------------------------------------------------------











//





//	Configuration





//





var fileLoadingImage = "layout/imagens/loading.gif";		





var fileBottomNavCloseImage = "layout/imagens/closelabel.gif";











var resizeSpeed = 7;	// controls the speed of the image resizing (1=slowest and 10=fastest)











var borderSize = 10;	//if you adjust the padding in the CSS, you will need to update this variable











// -----------------------------------------------------------------------------------











//





//	Global Variables





//





var imageArray = new Array;





var activeImage;











if(resizeSpeed > 10){ resizeSpeed = 10;}





if(resizeSpeed < 1){ resizeSpeed = 1;}





resizeDuration = (11 - resizeSpeed) * 0.15;











// -----------------------------------------------------------------------------------











//





//	Additional methods for Element added by SU, Couloir





//	- further additions by Lokesh Dhakar (huddletogether.com)





//





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;





	}





});











// -----------------------------------------------------------------------------------











//





//	Extending built-in Array object





//	- array.removeDuplicates()





//	- array.empty()





//





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();





	}





}











// -----------------------------------------------------------------------------------











//





//	Lightbox Class Declaration





//	- initialize()





//	- start()





//	- changeImage()





//	- resizeImageContainer()





//	- showImage()





//	- updateDetails()





//	- updateNav()





//	- enableKeyboardNav()





//	- disableKeyboardNav()





//	- keyboardNavAction()





//	- preloadNeighborImages()





//	- end()





//





//	Structuring of code inspired by Scott Upton (http://www.uptonic.com/)





//





var Lightbox = Class.create();











Lightbox.prototype = {





	





	// initialize()





	// Constructor runs on completion of the DOM loading. Loops through anchor tags looking for 





	// 'lightbox' references and applies onclick events to appropriate links. The 2nd section of





	// the function inserts html at the bottom of the page which is used to display the shadow 





	// overlay and the image container.





	//





	initialize: function() {	





		if (!document.getElementsByTagName){ return; }





		var anchors = document.getElementsByTagName('a');











		// loop through all anchor tags





		for (var i=0; i<anchors.length; i++){





			var anchor = anchors[i];





			





			var relAttribute = String(anchor.getAttribute('rel'));





			





			// use the string.match() method to catch 'lightbox' references in the rel attribute





			if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){





				anchor.onclick = function () {myLightbox.start(this); return false;}





			}





		}











		// The rest of this code inserts html at the bottom of the page that looks similar to this:





		//





		//	<div id="overlay"></div>





		//	<div id="lightbox">





		//		<div id="outerImageContainer">





		//			<div id="imageContainer">





		//				<img id="lightboxImage">





		//				<div style="" id="hoverNav">





		//					<a href="#" id="prevLink"></a>





		//					<a href="#" id="nextLink"></a>





		//				</div>





		//				<div id="loading">





		//					<a href="#" id="loadingLink">





		//						<img src="images/loading.gif">





		//					</a>





		//				</div>





		//			</div>





		//		</div>





		//		<div id="imageDataContainer">





		//			<div id="imageData">





		//				<div id="imageDetails">





		//					<span id="caption"></span>





		//					<span id="numberDisplay"></span>





		//				</div>





		//				<div id="bottomNav">





		//					<a href="#" id="bottomNavClose">





		//						<img src="images/close.gif">





		//					</a>





		//				</div>





		//			</div>





		//		</div>





		//	</div>

















		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 objCaption = document.createElement("span");





		objCaption.setAttribute('id','caption');





		objImageDetails.appendChild(objCaption);





	





		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()





	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.





	//





	start: function(imageLink) {	











		hideSelectBoxes();











		// stretch overlay to fill page and fade in





		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 image is NOT part of a set..





		if((imageLink.getAttribute('rel') == 'lightbox')){





			// add single image to imageArray





			imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));			





		} else {





		// if image is part of a set..











			// loop through anchors, find other images in set, and add them to imageArray





			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++;}





		}











		// calculate top offset for the lightbox and display 





		var arrayPageSize = getPageSize();





		var arrayPageScroll = getPageScroll();





		var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);











		Element.setTop('lightbox', lightboxTop);





		Element.show('lightbox');





		





		this.changeImage(imageNum);





	},











	//





	//	changeImage()





	//	Hide most elements and preload image in preparation for resizing image container.





	//





	changeImage: function(imageNum) {	





		





		activeImage = imageNum;	// update global var











		// hide elements during transition





		Element.show('loading');





		Element.hide('lightboxImage');





		Element.hide('hoverNav');





		Element.hide('prevLink');





		Element.hide('nextLink');





		Element.hide('imageDataContainer');





		Element.hide('numberDisplay');		





		





		imgPreloader = new Image();





		





		// once image is preloaded, resize image container





		imgPreloader.onload=function(){





			Element.setSrc('lightboxImage', imageArray[activeImage][0]);





			myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);





		}





		imgPreloader.src = imageArray[activeImage][0];





	},











	//





	//	resizeImageContainer()





	//





	resizeImageContainer: function( imgWidth, imgHeight) {











		// get current height and width





		this.wCur = Element.getWidth('outerImageContainer');





		this.hCur = Element.getHeight('outerImageContainer');











		// scalars based on change from old to new





		this.xScale = ((imgWidth  + (borderSize * 2)) / this.wCur) * 100;





		this.yScale = ((imgHeight  + (borderSize * 2)) / this.hCur) * 100;











		// calculate size difference between new and old image, and resize if necessary





		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 new and old image are same size and no scaling transition is necessary, 





		// do a quick pause to prevent image flicker.





		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()





	//	Display image and begin preloading neighbors.





	//





	showImage: function(){





		Element.hide('loading');





		new Effect.Appear('lightboxImage', { duration: 0.5, queue: 'end', afterFinish: function(){	myLightbox.updateDetails(); } });





		this.preloadNeighborImages();





	},











	//





	//	updateDetails()





	//	Display caption, image number, and bottom nav.





	//





	updateDetails: function() {





	





		Element.show('caption');





		Element.setInnerHTML( 'caption', imageArray[activeImage][1]);





		





		// if image is part of set display 'Image x of x' 





		if(imageArray.length > 1){





			Element.show('numberDisplay');





			Element.setInnerHTML( 'numberDisplay', "Foto " + eval(activeImage + 1) + " de " + 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()





	//	Display appropriate previous and next hover navigation.





	//





	updateNav: function() {











		Element.show('hoverNav');				











		// if not first image in set, display prev image button





		if(activeImage != 0){





			Element.show('prevLink');





			document.getElementById('prevLink').onclick = function() {





				myLightbox.changeImage(activeImage - 1); return false;





			}





		}











		// if not last image in set, display next image button





		if(activeImage != (imageArray.length - 1)){





			Element.show('nextLink');





			document.getElementById('nextLink').onclick = function() {





				myLightbox.changeImage(activeImage + 1); return false;





			}





		}





		





		this.enableKeyboardNav();





	},











	//





	//	enableKeyboardNav()





	//





	enableKeyboardNav: function() {





		document.onkeydown = this.keyboardAction; 





	},











	//





	//	disableKeyboardNav()





	//





	disableKeyboardNav: function() {





		document.onkeydown = '';





	},











	//





	//	keyboardAction()





	//





	keyboardAction: function(e) {





		if (e == null) { // ie





			keycode = event.keyCode;





		} else { // mozilla





			keycode = e.which;





		}











		key = String.fromCharCode(keycode).toLowerCase();





		





		if((key == 'x') || (key == 'o') || (key == 'c')){	// close lightbox





			myLightbox.end();





		} else if(key == 'p'){	// display previous image





			if(activeImage != 0){





				myLightbox.disableKeyboardNav();





				myLightbox.changeImage(activeImage - 1);





			}





		} else if(key == 'n'){	// display next image





			if(activeImage != (imageArray.length - 1)){





				myLightbox.disableKeyboardNav();





				myLightbox.changeImage(activeImage + 1);





			}





		}

















	},











	//





	//	preloadNeighborImages()





	//	Preload previous and next images.





	//





	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()





	//





	end: function() {





		this.disableKeyboardNav();





		Element.hide('lightbox');





		new Effect.Fade('overlay', { duration: 0.2});





		showSelectBoxes();





	}





}











// -----------------------------------------------------------------------------------











//





// getPageScroll()





// Returns array with x,y page scroll values.





// Core code from - quirksmode.org





//





function getPageScroll(){











	var yScroll;











	if (self.pageYOffset) {





		yScroll = self.pageYOffset;





	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict





		yScroll = document.documentElement.scrollTop;





	} else if (document.body) {// all other Explorers





		yScroll = document.body.scrollTop;





	}











	arrayPageScroll = new Array('',yScroll) 





	return arrayPageScroll;





}











// -----------------------------------------------------------------------------------











//





// getPageSize()





// Returns array with page width, height and window width, height





// Core code from - quirksmode.org





// Edit for Firefox by pHaez





//





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){ // 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





		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;





	}	





	





	// for small pages with total height less then height of the viewport





	if(yScroll < windowHeight){





		pageHeight = windowHeight;





	} else { 





		pageHeight = yScroll;





	}











	// for small pages with total width less then width of the viewport





	if(xScroll < windowWidth){	





		pageWidth = windowWidth;





	} else {





		pageWidth = xScroll;





	}

















	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 





	return arrayPageSize;





}











// -----------------------------------------------------------------------------------











//





// getKey(key)





// Gets keycode. If 'x' is pressed then it hides the lightbox.





//





function getKey(e){





	if (e == null) { // ie





		keycode = event.keyCode;





	} else { // mozilla





		keycode = e.which;





	}





	key = String.fromCharCode(keycode).toLowerCase();





	





	if(key == 'x'){





	}





}

// -----------------------------------------------------------------------------------

//

// listenKey()

//

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";





	}





}











// ---------------------------------------------------

//

// pause(numberMillis)

// Pauses code execution for specified time. Uses busy code, not good.

// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602

//

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);