/*
	Table of Contents
	-----------------
	Configuration

	Functions
	- getPageScroll()
	- getPageSize()
	- pause()
	- getKey()
	- listenKey()
	- showLightbox()
	- hideLightbox()
	- initLightbox()
	- addLoadEvent()

	Function Calls
	- addLoadEvent(initLightbox)

*/



//
// Configuration
//

// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = HTTP_HOST+'/web/img/ajax-loader_black.gif';
var closeButton = HTTP_HOST+'/web/img/ico_fechar.gif';
var audioPlayer = HTTP_HOST+'/web/img/audio_player.swf';

//
// 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;
}


var imageArray = new Array;
var activeImage;
var animate=false;

if(animate == true){
	overlayDuration = 0.2;	// shadow fade in/out duration
	if(resizeSpeed > 10){ resizeSpeed = 10;}
	if(resizeSpeed < 1){ resizeSpeed = 1;}
	resizeDuration = (11 - resizeSpeed) * 0.15;
} else { 
	overlayDuration = 0;
	resizeDuration = 0;
}
//
// 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;
}


//
// 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;
	}
}

//
// 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'){ hideLightbox(); }
}


//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }


//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showLightbox(objLink)
{
  var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	document.getElementById('cntImage').innerHTML = '<img id="lightboxImage" />'
  
  var objectPlayer;
	
	//prep objects
	var objOverlay = document.getElementById('overlay');
	
	//lightbox
	var objLightbox = document.getElementById('lightbox');
	
	//
	var objImage = document.getElementById('lightboxImage');
	
	//
	var objLoadingImage = document.getElementById('loadingImage');
	
	//lightboxDetails
	var objLightboxDetails = document.getElementById('lightboxDetails');
	
	//lightboxCaption
	var objCaption = document.getElementById('lightboxCaption');
	
	//NumberDisplay
	var objNumberDisplay = document.getElementById("NumberDisplay");

	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// center loadingImage if it exists
	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';
	}

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	
	// decide se cria a imagem ou adiciona o player
	var refer = objLink.href.split('#');

	if (refer[1] == 'imagem'){

    document.getElementById('cntImage').style.display='inline';

		// preload image
		imgPreload = new Image();

    //inicio-teste
	imgPreload.onload=function(){
		objImage.src = objLink.href;

		// center lightbox and make sure that the top and left values are not negative
		// and the image placed outside the viewport
		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('lightbox')){
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			objCaption.innerHTML = objLink.getAttribute('lightbox');
		} else {
			objCaption.style.display = 'none';
		}
		
		// A small pause between the image loading and displaying is required with IE,
		// this prevents the previous image displaying for a short burst causing flicker.
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		} 

		if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

		// Hide select boxes as they will 'peek' through the image in IE
		selects = document.getElementsByTagName("select");
        for (i = 0; i != selects.length; i++) {
                selects[i].style.visibility = "hidden";
        }

	
		objLightbox.style.display = 'block';

		// After image is loaded, update the overlay height as the new image might have
		// increased the overall page height.
		arrayPageSize = getPageSize();
		objOverlay.style.height = (arrayPageSize[1] + 'px');
		
		// Check for 'x' keypress
		listenKey();

		return false;
	}
  imgPreload.src = refer[0];
    //fim-teste

	} else {
		if (refer[1] == 'video') {
  document.getElementById('cntImage').style.height='344';
  document.getElementById('cntImage').style.display='block';
  document.getElementById('cntImage').style.overflow='visible';
  		objectPlayer =
  			'<object id="" data="'+ refer[0] +'&amp;rel=1&amp;border=0&amp;fs=1&amp;autoplay=0" type="application/x-shockwave-flash" width="425" height="344">' +
  			'<param name="movie" value="'+ refer[0] +'&amp;rel=1&amp;border=0&amp;fs=1&amp;autoplay=0">' +
    		'<param value="false" name="allowfullscreen"></param>' +
	      '<param name="wmode" value="transparent"></param>' +
	      '<embed src="'+ refer[0] +'&amp;rel=1&amp;border=0&amp;fs=1&amp;autoplay=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed>' +
    		'</object>';

      // center lightbox and make sure that the top and left values are not negative
			// and the image placed outside the viewport
			var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 344) / 2);
			var lightboxLeft = ((arrayPageSize[0] - 20 - 425) / 2);

			objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
			objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";


			objLightboxDetails.style.width = 425 + 'px';

			if(objLink.getAttribute('lightbox')){
				objCaption.style.display = 'block';
				objCaption.innerHTML = objLink.getAttribute('lightbox');
			} else {
				objCaption.style.display = 'none';
			}

			// A small pause between the image loading and displaying is required with IE,
			// this prevents the previous image displaying for a short burst causing flicker.
			if (navigator.appVersion.indexOf("MSIE")!=-1){
				pause(250);
			}

			if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

			// Hide select boxes as they will 'peek' through the image in IE
			selects = document.getElementsByTagName("select");
		    for (i = 0; i != selects.length; i++) {
		      selects[i].style.visibility = "hidden";
		    }

			objLightbox.style.display = 'block';

			// After image is loaded, update the overlay height as the new image might have
			// increased the overall page height.

			arrayPageSize = getPageSize();
			objOverlay.style.height = (arrayPageSize[1] + 'px');
      
			// Check for 'x' keypress
			listenKey();
			document.getElementById('cntImage').innerHTML = objectPlayer;
			return false;
		} else {
			// audio
      document.getElementById('cntImage').style.display='inline';
      objectPlayer = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="480" height="45">'+
        '<param name="movie" value="'+ audioPlayer +'?musicFile='+refer[0]+'">' +
				'<param name="movie" value="">'+
				'<param name="quality" value="high">'+
				'<param name="wmode" value="transparent">'+
				'<embed src="'+audioPlayer+'?musicFile='+refer[0]+'" quality="high" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" wmode="transparent" width="480" height="45"></embed>'+
				'</object>';
      // center lightbox and make sure that the top and left values are not negative
			// and the image placed outside the viewport
			var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 344) / 2);
			var lightboxLeft = ((arrayPageSize[0] - 20 - 425) / 2);

			objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
			objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
			objLightboxDetails.style.width = 480 + 'px';

			if(objLink.getAttribute('lightbox')){
				objCaption.style.display = 'block';
				objCaption.innerHTML = objLink.getAttribute('lightbox');
			} else {
				objCaption.style.display = 'none';
			}

			// A small pause between the image loading and displaying is required with IE,
			// this prevents the previous image displaying for a short burst causing flicker.
			if (navigator.appVersion.indexOf("MSIE")!=-1){
				pause(250);
			}

			if (objLoadingImage) {	objLoadingImage.style.display = 'none'; }

			// Hide select boxes as they will 'peek' through the image in IE
			selects = document.getElementsByTagName("select");
		    for (i = 0; i != selects.length; i++) {
		      selects[i].style.visibility = "hidden";
		    }

			objLightbox.style.display = 'block';

			// After image is loaded, update the overlay height as the new image might have
			// increased the overall page height.

			arrayPageSize = getPageSize();
			objOverlay.style.height = (arrayPageSize[1] + 'px');

			// Check for 'x' keypress
			listenKey();

			document.getElementById('cntImage').innerHTML = objectPlayer;
			return false;
		}
	}


}


//
// hideLightbox()
//
function hideLightbox()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
	document.getElementById('cntImage').innerHTML = '';

	// make select boxes visible
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}

	// disable keypress listener
	document.onkeypress = '';
}




//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initLightbox()
{

	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");
  var tmpRel;
	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){
			anchor.onclick = function () {showLightbox(this); return false;}
		}
	}

	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="overlay">
	//		<a href="#" onclick="hideLightbox(); return false;"><img id="loadingImage" /></a>
	//	</div>
	// <div id="lightbox">
	//		<a href="#" onclick="hideLightbox(); return false;" title="Click anywhere to close image">
	//			<img id="closeButton" />
	//			<img id="lightboxImage" />
	//		</a>
	//		<div id="lightboxDetails">
	//			<div id="lightboxCaption"></div>
	//			<div id="keyboardMsg"></div>
	//		</div>
	// </div>

	var objBody = document.getElementsByTagName("body").item(0);

	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	
	if( !document.getElementById('overlay') ){
		var objOverlay = document.createElement("div");
		objOverlay.setAttribute('id','overlay');
		objOverlay.onclick = function () {hideLightbox(); 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%';
		objBody.insertBefore(objOverlay, objBody.firstChild);
	
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
	
		// preload and create loader image
		var imgPreloader = new Image();
	
		// if loader image found, create link to hide lightbox and create loadingimage
		imgPreloader.onload=function(){
	
			var objLoadingImageLink = document.createElement("a");
			objLoadingImageLink.setAttribute('href','#');
			objLoadingImageLink.onclick = function () {hideLightbox(); return false;}
			objOverlay.appendChild(objLoadingImageLink);
	
			var objLoadingImage = document.createElement("img");
			objLoadingImage.src = loadingImage;
			objLoadingImage.setAttribute('id','loadingImage');
			objLoadingImage.style.position = 'absolute';
			objLoadingImage.style.zIndex = '150';
			objLoadingImageLink.appendChild(objLoadingImage);
	
			imgPreloader.onload=function(){};	//	clear onLoad, as IE will flip out w/animated gifs
	
			return false;
			
		
		}
	
		imgPreloader.src = loadingImage;
	
		// create lightbox div, same note about styles as above
		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 objSpan = document.createElement('span');
	  objSpan.setAttribute('id','cntImage');
	  objLightbox.appendChild(objSpan);
	
		// create link
		var objLink = document.createElement("a");
		objLink.setAttribute('href','#');
		objLink.setAttribute('title','Clique para fechar');
		objLink.onclick = function () {hideLightbox(); return false;}
		objLightbox.appendChild(objLink);
	
		// preload and create close button image
		var imgPreloadCloseButton = new Image();
	
		// create image
		var objImage = document.createElement("img");
		objImage.setAttribute('id','lightboxImage');
		objSpan.appendChild(objImage);
	
		// create details div, a container for the caption and keyboard message
		var objLightboxDetails = document.createElement("div");
		objLightboxDetails.setAttribute('id','lightboxDetails');
		objLightbox.appendChild(objLightboxDetails);
	
		// create caption
		var objCaption = document.createElement("div");
		objCaption.setAttribute('id','lightboxCaption');
		objCaption.style.display = 'none';
		objLightboxDetails.appendChild(objCaption);
		
		// create numberDisplay
		var objNumberDisplay = document.createElement("span");
		objNumberDisplay.setAttribute('id','numberDisplay');
		objLightboxDetails.appendChild(objNumberDisplay);	
	
		// create keyboard message
		var objKeyboardMsg = document.createElement("a");
		objKeyboardMsg.setAttribute('id','keyboardMsg');
		objKeyboardMsg.setAttribute('href','#');
		objKeyboardMsg.setAttribute('title','Clique para fechar');
		objKeyboardMsg.onclick = function () {hideLightbox(); return false;}
		objLightboxDetails.appendChild(objKeyboardMsg);
	}
}

//
// addLoadEvent()
// Adds event to window.onload without overwriting currently assigned onload functions.
// Function found at Simon Willison's weblog - http://simon.incutio.com/
//
function addLoadEvent(func)
{
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}

addLoadEvent(initLightbox);	// run initLightbox onLoad