/*
Lightbox JS: Fullsize Image Overlays
by Lokesh Dhakar - http://www.huddletogether.com

For more information on this script, visit:
http://huddletogether.com/projects/lightbox/

Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
(basically, do anything you want, just leave my name and link)

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 = '/lightbox/loading.gif';
var closeButton = '/lightbox/close.gif';





//
// 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;
}


//
// 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' ||key == 'х' ||key == 'ч' ||key == '[' ){ hideLightbox(); }
}


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







//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
//function showLightbox(objLink)
function showLightbox(prevsource,title,photo_guid)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	//var objLightboxout = document.getElementById('lightboxout');
	var objCaption = document.getElementById('lightboxCaption');
	var objCaption2 = document.getElementById('lightboxCaption2');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objLightboxDetails = document.getElementById('lightboxDetails');


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



	// 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";
	}


	//alert(arrayPageScroll[1]);
	// 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';

	// preload image
	imgPreload = new Image();



	imgPreload.onload=function(){

		//objImage.src = objLink.href;
		//objImage.src = objLink.getAttribute("prevsrc");
		//objImage.src = prevsource;
		objImage.src = imgPreload.src;

		// 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';
		//alert(imgPreload.width);

		//if(objLink.getAttribute('title')){



		if(title){
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			//objCaption.innerHTML = objLink.getAttribute('title');
			objCaption.innerHTML = "<b>"+title+"</b>";
		} else {
			objCaption.style.display = 'none';
		}

		objCaption2.style.display = 'none';
		//if(ajaxIsHere&&photo_guid){//Смотрим инфо по фото
		if(photo_guid){//Смотрим инфо по фото

			objCaption2.style.display = 'block';
			objCaption2.innerHTML = " ... ";

			//requester = new Ajax.Request('/ru/241/'+photo_guid+"/2",   {
			//requester = new Ajax.Request('/ru/236/'+photo_guid+"/2",   {

			loadGET('/jservice/'+photo_guid+"/2",function(){

				if (req.readyState == 4) {
					// only if "OK"
					if (req.status == 200) {
						var jsonData = eval(req.responseText);


						if (jsonData == undefined) {return }

						var outptext = "";

						//var comm_quan = jsonData[0].comm.size(); //Количество комментариев
						var comm_quan = parseInt(jsonData[0].comm_count); //Количество комментариев

						if(comm_quan>0){
							outptext = "&nbsp;&nbsp;<a class='photolink' href='"+jsonData[0].url+"'  style='font-weight:normal'>(Комментариев: "+comm_quan+")</a>";
							outptext += "<br><br>Последний комментарий:<br>"+jsonData[0].comm.text+" ("+jsonData[0].comm.dt2+")";
						}
						else  outptext = "&nbsp;&nbsp;Нет комментариев";


						objCaption2.innerHTML = outptext;
					}
				}
			});

		}



		// 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'; }




		objLightbox.style.display = 'block';
		//objLightboxout.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');


		//alert(objLink.getAttribute("prevsrc"));

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


		return false;
	}

	//alert(objLink.getAttribute("prevsrc"));
	//objImage.src = objLink.href;
	//imgPreload.src = objLink.getAttribute("prevsrc");
	imgPreload.src = prevsource;
	//document.getElementById('lightbox').style.display = 'block';



}





//
// hideLightbox()
//
function hideLightbox()
{

	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');
	//objLightboxout = document.getElementById('lightboxout');

	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
	//objLightboxout.style.display = 'none';

	// 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 showlayer(prevsource,title,e,photo_guid){
var forceshow = false;
	if(e=="force"){
		forceshow = true;
	}

	if(!e) e = event;
	if (!e) e = window.event;



	//if(event.shiftKey||event.ctrlKey||ctrlbool==1){
	if(forceshow||e.shiftKey||e.ctrlKey){
		e.cancelBubble = true;
		showLightbox(prevsource,title,photo_guid);
		return false;
	}
	return true;

}


function initLightbox()
{

	/*	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");

	//if(event)alert('events on');

	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
	var anchor = anchors[i];

	if (anchor.getAttribute("prevsrc") && anchor.getAttribute("href") && (anchor.getAttribute("rel") == "lightbox")){

	anchor.onclick = function (e) {

	if (!e) e = window.event;
	if(!e) e = event;

	//if(event.shiftKey||event.ctrlKey||ctrlbool==1){
	if(e.shiftKey||e.ctrlKey){
	e.cancelBubble = true;
	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)
	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(){
	//alert("Прелоад загрузился!")

	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.setAttribute('class','opa_100');
	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 objLightboxinner = document.createElement("div");
	objLightboxinner.setAttribute('id','lightboxinner');
	//objLightbox.style.display = 'none';
	//objLightbox.style.position = 'absolute';
	objLightboxinner.style.zIndex = '100';
	//objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	objLightbox.appendChild(objLightboxinner);

	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','#');
	objLink.setAttribute('title','Закрыть');
	objLink.onclick = function () {hideLightbox(); return false;}
	//objLightbox.appendChild(objLink);
	objLightboxinner.appendChild(objLink);
	/*
	// preload and create close button image
	var imgPreloadCloseButton = new Image();

	// if close button image found,
	imgPreloadCloseButton.onload=function(){

	var objCloseButton = document.createElement("img");
	objCloseButton.src = closeButton;
	objCloseButton.setAttribute('id','closeButton');
	objCloseButton.style.position = 'absolute';
	objCloseButton.style.zIndex = '200';
	objLink.appendChild(objCloseButton);

	return false;
	}

	imgPreloadCloseButton.src = closeButton;
	*/
	// create image
	var objImage = document.createElement("img");
	objImage.setAttribute('id','lightboxImage');
	objLink.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);
	objLightboxinner.appendChild(objLightboxDetails);

	// create caption
	var objCaption = document.createElement("div");
	objCaption.setAttribute('id','lightboxCaption');
	objCaption.style.display = 'none';
	objLightboxDetails.appendChild(objCaption);

	// create caption2
	var objCaption2 = document.createElement("div");
	objCaption2.setAttribute('id','lightboxCaption2');
	objCaption2.setAttribute('style','display:none;font-weight:normal;');
	//objCaption2.style.display = 'none';
	objLightboxDetails.appendChild(objCaption2);

	// create keyboard message
	var objKeyboardMsg = document.createElement("div");
	objKeyboardMsg.setAttribute('id','keyboardMsg');
	objKeyboardMsg.innerHTML = '<a  onclick="hideLightbox(); return false;" title="нажми X чтобы закрыть" style="cursor:pointer"><img src="/images/icons/ico_close.gif" align=absmiddle></a>&nbsp;&nbsp;<a class=photolink href="#" onclick="hideLightbox(); return false;">Закрыть</a>';
	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();
		}
	}
}


initLightbox();
//addLoadEvent(initLightbox);	// run initLightbox onLoad