/*
	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)

	sure dude - i'll leave it :)
	i've added couple own features - such as dynamic text corresponding for images, extracted from database
	and alternate images view in fullsize mode
	http://zmolo.com

*/

// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = '/im/clock1.gif';		
var closeButton = '/im/bt_close.gif';		
var nextButton = '/im/arr_r.gif';	
var prevButton = '/im/arr_l.gif';
var currentfade = 100;
var transDirection=0;
var imgPreload=new Image();

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


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

//
// showLightbox()
// Preloads images. Pleaces new image in lightbox then centers and displays.

function showOverlay(dirola){
	var objOverlay = document.getElementById('overlay');
	if(dirola==1){
		
		objOverlay.style.height = (arrayPageSize[1] + 'px');
		objOverlay.style.top = (arrayPageScroll[1] + 'px');
		objOverlay.style.display = 'block';
		
	} else {
		objOverlay.style.display = 'none';
	}
}


//
function showLightbox(objLink)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objText=document.getElementById('text');
	//objText.innerHTML=objLink.getAttribute("id");
	var objScript = document.getElementById ? document.getElementById("ajaxObj") : null;
	var currentID = objLink.getAttribute("id");
	var sstr="/get_ajax.php?act=gallery&id="+currentID+"&timestamp="+Math.random();
	objScript.src=sstr;

	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.top = (arrayPageScroll[1] + 'px');
	objOverlay.style.display = 'block';
	

	// preload image
	imgPreload1 = new Image();
	var textW=0;
	imgPreload1.src =  objLink.href;
	var onloadDone=0;

	imgPreload1.onload=function(){
		var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload1.height) / 2);
		var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload1.width) / 2);
		textW = imgPreload1.width;
		
		objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
		objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";

		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(100);
		} 

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

		selects = document.getElementsByTagName("select");
        for (i = 0; i != selects.length; i++) {
                selects[i].style.visibility = "hidden";
        }
		var objText=document.getElementById('text');
		objText.style.width = imgPreload1.width-20+"px";

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

		onloadDone=1; 
		currentfade=0;
		objImage.src = objLink.href;
		objImage.className = 'transparent';
		fadeObj(objImage,1);
		return false;
	} 

	if (imgPreload1.complete && !onloadDone)
	{
	   imgPreload1.onload();
	}

	
	

	/*imgPreload.src = objLink.href;
	imgPreload.className = 'transparent' 

	currentfade=0;
	fadeObj(objImage,1); ;*/

}

/*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	**/

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

	fadeObj(objImage,0);

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







function initLightbox()
{
	
	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];

		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "fdpop")){
			anchor.onclick = function () {showLightbox(this); return false;}
		} else 
		
		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "thumb")){
			anchor.onclick = function () {replaceim(this); return false;}
		}
	}


	/*iframe object to process DB*/
	var objBody = document.getElementsByTagName("body").item(0);
	var fr=document.createElement('iframe');
	fr.src='javascript:false;';
	fr.name="ajaxObj";
	fr.id="ajaxObj";
	fr.style.position='absolute';
	fr.style.margin=fr.style.padding='0px';
	fr.style.zIndex=1;
	fr.style.display='none';
	fr.style.width=fr.style.height='0px';
	objBody.appendChild(fr);	

	var objImageHolder = document.getElementById('imgHolder') ? document.getElementById('imgHolder') : null;
	if (objImageHolder)
	{
		var imgPreloader = new Image();
		imgPreloader.onload=function(){
			var objLoadingImage = document.createElement("img");
			objLoadingImage.src = loadingImage;
			objLoadingImage.setAttribute('id','waitim');
			objLoadingImage.style.position = 'relative';
			objLoadingImage.style.zIndex = '201';
			objLoadingImage.style.display= 'none';
			objImageHolder.appendChild(objLoadingImage);
			imgPreloader.onload=function(){};
			return false;
		}
		imgPreloader.src = loadingImage;
	}
	
	// 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(){

		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 = '201';
		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);
	
	// create lightbox div, same note about styles as above
	var objNav = document.createElement("div");
	objNav.setAttribute('id','nav');
	objNav.style.position = 'absolute';
	objNav.style.zIndex = '100';	
	objLightbox.appendChild(objNav);




	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','#');
	objLink.setAttribute('title','Click to close');
	objLink.onclick = function () {hideLightbox(); return false;}
	objLightbox.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.setAttribute('title','CLOSE');
		objCloseButton.setAttribute('alt','CLOSE');
		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 div text
	var objText = document.createElement("p");
	objText.setAttribute('id','text');
	//objText.style.height =60+"px";
	//objBody.insertBefore(objText, objLightbox.nextSibling);
	objLightbox.appendChild(objText);

}





function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}

}



 
function setvalue(name,value){
	var obj = document.getElementById ? document.getElementById(name) : null;
	obj.innerHTML = value;
}




function replaceim(objLink)
{
	
	//var objImageHolder = document.getElementById('imgHolder');
	var objImage = document.getElementById('limg');
	
	/*objImage.style.visibility='hidden'; !IMPIORTANNNNTSTSTSTSTSTSTST*/

	var objWaitImage = document.getElementById('waitim');
	
	//objImageHolder.innerHTML="<img src='/im/clock1.gif' style='margin:200px 45%;'> ";
	
	var objText=document.getElementById('text');

	if (objText)
	{
		objText.innerHTML="<img src='/im/clock1.gif' style='margin:2px 40%;'> ";
		var objScript = document.getElementById ? document.getElementById("ajaxObj") : null;
		var currentID = objLink.getAttribute("id");
		var sstr="/get_ajax.php?act=gallery&id="+currentID+"&timestamp="+Math.random();
		objScript.src=sstr;
	}
	



	/*if (objWaitImage) {
		//objWaitImage.style.marginTop = objImage.height/2 + 'px';
		//objWaitImage.style.marginLeft = objImage.width/2 + 'px';
		objWaitImage.style.top = -objImage.height/2 + 'px';
		objWaitImage.style.left = objImage.width/2 + 'px';
		objWaitImage.style.display = 'block';
	}*/ 

	/*holdObj=document.getElementById('imgHolder');
	holdObj.style.height=objImage.height + 'px';*/

	
	objImage.className = 'opaque'; 
	imgTransition('limg',objLink);
	
}



function imgTransition(imgObjID,linkObj){
	var step=10;
	var duration=30;
	var OP=document.getElementById(imgObjID);


	if (transDirection == 0)
	{
		if (currentfade > 0)
		{
			if (OP.filters)
			{ 
				OP.filters[0].opacity= currentfade-step;
			} else {
				OP.style.opacity =  (currentfade-step)/100;
				OP.style.MozOpacity =  (currentfade-step)/100;
			}
			currentfade-=step;
			eval("upTimer="+setTimeout("imgTransition('"+imgObjID+"','"+linkObj+"')",duration));
		}   else {
			
			imgPreload = new Image();
			imgPreload.src = linkObj;
			if (imgPreload.complete)
			{
				eval("clearTimeout(upTimer)");
				OP.src = imgPreload.src;
				transDirection = 1;
				eval("upTimer="+setTimeout("imgTransition('"+imgObjID+"','"+linkObj+"')",duration));
			}
			else {
				imgPreload.onload=function(){
					/*objImage.style.visibility='visible';
					if (objWaitImage) {objWaitImage.style.display = 'none'; }*/	 
					/*if (navigator.appVersion.indexOf("MSIE")!=-1){
						pause(500);
					}*/ 
					eval("clearTimeout(upTimer)");
					OP.src = imgPreload.src;
					transDirection = 1;
					eval("upTimer="+setTimeout("imgTransition('"+imgObjID+"','"+linkObj+"')",duration));
					return false;
				}
			}
			
			
			
			
		}
	} else {
		if (currentfade < 100)
		{
			if (OP.filters)
			{ 
				OP.filters[0].opacity= currentfade+step;
			} else {
				OP.style.opacity =  (currentfade+step)/100;
				OP.style.MozOpacity =  (currentfade+step)/100;
			}
			currentfade+=step;
			eval("upTimer="+setTimeout("imgTransition('"+imgObjID+"','"+linkObj+"')",duration));
		} else {
			transDirection = 0;
			eval("clearTimeout(upTimer)");
		}
	}
}



function fadeObj(obj,direction){
	var objPassed=document.getElementById(obj.getAttribute("id"));
	var iid=obj.getAttribute('id');
	eval("window.Oppa"+iid+"= function() {goFade(objPassed,direction,iid);}");

	if (!direction)
	{  
		if (eval(isdefined("downTimer"+iid)))
		{
			eval("clearTimeout(downTimer"+iid+")");
		}
	} else {
		if (eval(isdefined("upTimer"+iid)))
		{
			eval("clearTimeout(upTimer"+iid+")");
		}
	}

	goFade(objPassed,direction,iid);
}



function goFade(OP,direction,objID){
	var step=10;
	var duration=30;
	if (direction)
	{	
		if (currentfade < 100)
		{
			if (OP.filters)
			{ 
				OP.filters[0].opacity= currentfade+step;
			} else {
				OP.style.opacity =  (currentfade+step)/100;
				OP.style.MozOpacity =  (currentfade+step)/100;
			}
			currentfade+=step;
			eval("downTimer"+objID+"="+setTimeout("Oppa"+objID+"()",duration));
		} else {
			eval("clearTimeout(downTimer"+objID+")");
		}
			/*window.alert(currentfade); */
	} else {
		if (currentfade > 0)
		{
			if (OP.filters)
			{ 
				OP.filters[0].opacity= currentfade-step;
			} else {
				OP.style.opacity =  (currentfade-step)/100;
				OP.style.MozOpacity =  (currentfade-step)/100;
			}
			currentfade-=step;
			eval("upTimer"+objID+"="+setTimeout("Oppa"+objID+"()",duration));
		}   else {
			eval("clearTimeout(upTimer"+objID+")");
		}
	}
}

function showAd(){
	if (showAd)
	{
		showOverlay(1);
		var objLightbox = document.getElementById ? document.getElementById("splash") : null;

		var selects = document.getElementsByTagName("select");
		for (i = 0; i != selects.length; i++) {
				selects[i].style.visibility = "hidden";
		}

		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3]  - 310) / 2);
		var lightboxLeft = ((arrayPageSize[0] - 20-685) / 2);
			
			objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
			objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";

			objLightbox.style.display='block';
		return false;
	}
	return false;
}


function hideAd(){
		var obj = document.getElementById ? document.getElementById("splash") : null;
		obj.style.display='none';
		showOverlay(0);
		var selects = document.getElementsByTagName("select");
		for (i = 0; i != selects.length; i++) {
				selects[i].style.visibility = "visible";
		}
		return false;
}




addLoadEvent(initLightbox);
addLoadEvent(showAd);