// If you would like to use a custom loading image or close button reference them in the next two lines.
var loadingImage = '/extension/nxc_psykol/design/pf/images/loading.gif';		
var closeButton = '/extension/nxc_psykol/design/pf/images/close.gif';

function $(e){if(typeof e=="string")e=document.getElementById(e);return e};
function hide(o){ o.style.display = 'none'; }
function show(o, withFade ){
	if ( typeof(withFade) != 'undefined' && withFade == true ){
		o.style.zoom = 1; //to make layout ( alpha filter don't work without layout in IE)
		setOpacity(o.id, 0 ); //initial opacity to transparrent
	   	o.style.display = 'block';
	   	appear(o.id);
   	} else{
		o.style.display = 'block';
		o.style.visibility = '';
	}
}



//
// 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;
}


function showLightBoxWithSize( contentID, width,height )
{
	if ( $("lightbox-content") == null )
	{
	    var newElement = document.createElement('div');	
	    newElement.id = "lightbox-content";
	    document.body.appendChild( newElement );
        }
	if ( $("lightbox-overlay") == null )
	{
	     var newElement1 = document.createElement('div');
	     newElement1.id = "lightbox-overlay";
	     newElement1['class'] = 'iePNG';
	     document.body.appendChild( newElement1 );
        }

	var objOverlay = document.getElementById('lightbox-overlay');
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
        show($('lightbox-overlay'),false);
        //objOverlay.style.display = 'block';
        var boxSizeWidth = width;
        var boxSizeHeight = height;
	var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - boxSizeHeight) / 2);
	var lightboxLeft = ((arrayPageSize[0] - 20 - boxSizeWidth) / 2);

	var objLightbox = document.getElementById('lightbox-content');
        objLightbox.innerHTML = $(contentID).innerHTML;
        $(contentID).innerHTML = '';
	objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
	objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
	objLightbox.style.width = boxSizeWidth + 'px' ;
        show($('lightbox-content'),false);
}



function showLightBoxImage( image, width,height )
{

    if ( $("lightbox-content") == null )
    {
        var newElement = document.createElement('div');
        newElement.id = "lightbox-content";
        document.body.appendChild( newElement );
        var newaElement = document.createElement('a');
        newaElement.id="lightbox-close";
        newaElement.innerHTML = "Lukk";
        newaElement.href = "javascript:void(0)";
        newaElement.onclick =  new Function("hideLoginBox()");
        newElement.appendChild(newaElement);


        var newImageElement = document.createElement('img');
        newImageElement.id = "lightbox_image";
        newElement.appendChild( newImageElement );
    }
    else
    {
        $("lightbox-content").innerHTML = '';
        if ( $("lightbox-close") == null) {
            var newaElement = document.createElement('a');
            newaElement.id="lightbox-close";
            newaElement.innerHTML = "Lukk";
            newaElement.href = "javascript:void(0)";
            newaElement.onclick =  new Function("hideLoginBox()");
            $("lightbox-content").appendChild(newaElement);
        }
        else
        {
            $("lightbox-content").appendChild($("lightbox-close"));
        }
        if ( $("lightbox_image") == null )
        {
           var newImageElement = document.createElement('img');
           newImageElement.id = "lightbox_image";
           $("lightbox-content").appendChild(newImageElement);
        }
        else
        {
            $("lightbox-content").appendChild( $("lightbox_image") );
        }
    }

    if ( $("lightbox-overlay") == null )
    {
         var newElement1 = document.createElement('div');
         newElement1.id = "lightbox-overlay";
         newElement1['class'] = 'iePNG';
         document.body.appendChild( newElement1 );
        }

    var objOverlay = document.getElementById('lightbox-overlay');
    var arrayPageSize = getPageSize();
    var arrayPageScroll = getPageScroll();
    // set height of Overlay to take up whole page and show
    objOverlay.style.height = (arrayPageSize[1] + 'px');
        show($('lightbox-overlay'),false);
        //objOverlay.style.display = 'block';
        var boxSizeWidth = width;
        var boxSizeHeight = height;
    var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - boxSizeHeight) / 2);
    var lightboxLeft = ((arrayPageSize[0] - 20 - boxSizeWidth) / 2);
    var objLightbox = document.getElementById('lightbox-content');

      imgobj = objLightbox.getElementsByTagName("img");
      imgobj[0].src = image;
      imgobj[0].width = width;
      imgobj[0].height = height;
      imgobj[0].border = 1;



    objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
    objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
    objLightbox.style.width = boxSizeWidth + 'px' ;
    show($('lightbox-content'),false);
}

function hideLoginBox()
{
        hide($('lightbox-overlay'));
        hide($('lightbox-content'));
  }

function hideLoginBox2()
{
        hide($('overlay'));
        hide($('login-form-lbox'));
}
function hideLightBox( contentID )
{
        hide($('lightbox-overlay'));
        hide($('lightbox-content'));
        $(contentID).innerHTML = $('lightbox-content').innerHTML;
}

function fixPNG(element)
{
  if (/MSIE (5\.5|6).+Win/.test(navigator.userAgent))
  {
    var src;
    if (element.tagName=='IMG')
    {
      if (/\.png$/.test(element.src))
      {
        src = element.src;
        element.src = "/blank.gif";
      }
    }
    else
    {
      src = element.currentStyle.backgroundImage.match(/url\("(.+\.png)"\)/i);
      if (src)
      {
        src = src[1];
        element.runtimeStyle.backgroundImage="none";
      }
    }
    if (src)
    {
        element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
    }


  }

}


/*=========ADDED BY MARINA NXC===========*/






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") == "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)
	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.border = 'solid 1px purple';*/
	objLightbox.style.zIndex = '300';	
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	
	// create link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','#');
	objLink.setAttribute('title','Click to close');
	objLink.onclick = function () {hideLightbox2(); 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.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);

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

	// create keyboard message
	var objKeyboardMsg = document.createElement("div");
	objKeyboardMsg.setAttribute('id','keyboardMsg');
	/*objKeyboardMsg.innerHTML = 'press <a href="#" onclick="hideLightbox(); return false;"><kbd>x</kbd></a> to close';*/
objKeyboardMsg.innerHTML ='';
	objLightboxDetails.appendChild(objKeyboardMsg);


}

function showLoginBox()
{
    var objLoadingImage = document.getElementById('loadingImage');
	var objBody = document.getElementsByTagName("body").item(0);
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();


    var objOverlay = document.getElementById('overlay');
	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);


	objLoadingImage.style.display = 'none';


	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
        //objOverlay.style.display = 'block';
        var boxSizeWidth = 250;
        var boxSizeHeight = 150;
	var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - boxSizeHeight) / 2);
	var lightboxLeft = ((arrayPageSize[0] - 20 - boxSizeWidth) / 2);
//var lightboxTop=0;
//var lightboxLeft=350;

	var objLightbox = document.getElementById('login-form-lbox');


	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '300';	

	

        objLightbox.innerHTML = $('login-form-lbox-content').innerHTML;

	objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
	objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
	objLightbox.style.width = boxSizeWidth + 'px' ;
    objBody.insertBefore(objLightbox, objOverlay.nextSibling);


     show($('overlay'),false);
     show($('login-form-lbox'),false);
}

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

}

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


	// prep objects
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objCaption = document.getElementById('lightboxCaption');
	var objImage = document.getElementById('lightboxImage');
	var objLoadingImage = document.getElementById('loadingImage');
	var objLightboxDetails = document.getElementById('lightboxDetails');

	
	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';

	// preload image
	imgPreload = new Image();


	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('title')){
			objCaption.style.display = 'block';
			//objCaption.style.width = imgPreload.width + 'px';
			objCaption.innerHTML = objLink.getAttribute('title');
		} 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 = objLink.href;

}

//
// 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 hideLightbox2()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');

	// 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 = '';
}

//
// 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; }
	


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