// -----------------------------------------------------------------------------------
//
//	Lightbox v2.02
//
// -----------------------------------------------------------------------------------

//
//	Configuration
//

var fileBottomNavCloseImage = "pics/close.gif";
var prevImage = "pics/prevSmall.gif";
var nextImage = "pics/nextSmall.gif";

var resizeSpeed = 9;	// 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+20) +"px";
	},
	setSrc: function(element,src) {
		var arrayPageSize = getPageSize();
    	element = $(element);
    	element.src = src + "&Height=" + Math.round(arrayPageSize[3]-105) + "&Width=" + arrayPageSize[2]; 
	},
	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();
	}
}

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


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>
		//		</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 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 objPrevNext = document.createElement("div");
		objPrevNext.setAttribute('id','PrevNext');
		objImageData.appendChild(objPrevNext);	
		
		var objPrevLink = document.createElement("a");
		objPrevLink.setAttribute('id','prev');
		objPrevLink.setAttribute('href','javascript:myLightbox.prev();');
		objPrevNext.appendChild(objPrevLink);

		var objPrevImage = document.createElement("img");
		objPrevImage.setAttribute('src', prevImage);
		objPrevLink.appendChild(objPrevImage);
		
		var objNextLink = document.createElement("a");
		objNextLink.setAttribute('id','next');
		objNextLink.setAttribute('href','javascript:myLightbox.next();');
		objPrevNext.appendChild(objNextLink);
		
		var objNextImage = document.createElement("img");
		objNextImage.setAttribute('src', nextImage);
		objNextLink.appendChild(objNextImage);		
		
		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);
	},
	
	prev: function() {
		// if not first file in set, display prev file
		if(activeImage != (0)){
			myLightbox.changeImage(activeImage - 1);
		}
		else {
			myLightbox.changeImage(imageArray.length-1);
		}
	},
	
	next: function() {
		// if not last file in set, display next file
		if(activeImage != (imageArray.length - 1)){
			myLightbox.changeImage(activeImage + 1);
		}
		else {
			myLightbox.changeImage(0);
		}
	},
	
	//
	//	start()
	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
	//
	start: function(imageLink) {	
		
		// Fjerner scrollbaren
		var css = document.compatMode=="CSS1Compat" ? document.documentElement.style : document.body.style;
	    css.overflow = css.overflow=="hidden" ? "" : "hidden";
		
		hideSelectBoxes();
		hideSelectIframes();
		Element.hide('lightboxImage');
		Element.hide('imageDataContainer');
		Element.hide('numberDisplay');
	//	Element.hide('prevLink');
	//	Element.hide('nextLink');
		
		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setHeight('overlay', arrayPageSize[1]);
		Element.setWidth('overlay', arrayPageSize[0]);
		new Effect.Appear('overlay', { duration: 0.2, from: 0.0, to: 0.75 });
		
		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'), anchor.getAttribute('name')));	
		} 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'), anchor.getAttribute('name')));
				}
			}
			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];

		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
		var arrayPageSize = getPageSize();	
		
//		Element.hide('lightboxImage');
		Element.hide('imageDataContainer');
		Element.hide('numberDisplay');	
		Element.hide('caption');
		
		var url = imageArray[activeImage][0].replace("index.asp", path + "idurl.asp")+'&x=x562asdH2aS';
		getHttpObj(url);
		
		function getHttpObj(sUrl) {
		    var xmlhttp = a = FilUrl = null;
		    if (window.ActiveXObject) {
		        a = ["MSXML2.XMLHTTP.5.0","MSXML2.XMLHTTP.4.0","MSXML2.XMLHTTP.3.0","Msxml2.XMLHTTP","Microsoft.XMLHTTP"];
		        for (var i=0,j=a.length; i<j; s=a[i],i++) {
		            try{
		                if (xmlhttp = new ActiveXObject(s)) break
		            }
		            catch(e){}
		        }
		    }
			else {
				xmlhttp = new XMLHttpRequest();
			}
		    if (!xmlhttp) return alert("Your browser dosen't support XMLHttp requests.");
		    xmlhttp.open("GET", sUrl, true);
		    xmlhttp.onreadystatechange = function() {
		        responseCallBack(xmlhttp);
		    };
		    xmlhttp.send(null);
		}
		
		function responseCallBack(xmlhttp) {
		    if (xmlhttp.readyState != 4) return;
		    FilUrl = xmlhttp.responseText;
			xmlhttp = null;
			
			if (FilUrl != null) {
				if (FilUrl.indexOf(".swf")>0) {
					// Flash - .swf
					Element.setWidth('outerImageContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
					Element.setHeight('outerImageContainer', Math.round(arrayPageSize[3]-90) + (borderSize * 2));
					Element.setInnerHTML('imageContainer', '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="'+Math.round(arrayPageSize[2]-40)+'" height="'+Math.round(arrayPageSize[3]-90)+'" align="middle"><param name="allowScriptAccess" value="sameDomain" /><param name="movie" value="'+FilUrl+'" /><param name="quality" value="high" /><param name="bgcolor" value="#FFFFFF" /><embed src="'+FilUrl+'" quality="high" bgcolor="#FFFFFF" width="'+Math.round(arrayPageSize[2]-40)+'" height="'+Math.round(arrayPageSize[3]-110)+'" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" /></object>');
					Element.setWidth('imageDataContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
				}
				else if (FilUrl.indexOf(".dcr")>0) {
					// Shockwave - .dcr
					Element.setWidth('outerImageContainer', 620);
					Element.setHeight('outerImageContainer', 500);
					Element.setInnerHTML('imageContainer', '<table width="600" height="500"><tr><td valing=center><Center><object classid="clsid:166B1BCA-3F9C-11CF-8075-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab#version=8,5,0,0" width="100%" height="100%"><param name="src" value="'+FilUrl+'" /><embed src="'+FilUrl+'" pluginspage="http://www.macromedia.com/shockwave/download/"></embed></object></Center></td></tr></table>');
					Element.setWidth('imageDataContainer', 620);
				}
				else if (FilUrl.indexOf(".class")>0) {
					// JAVA - .class
					UrlArr = FilUrl.split("/");
					var Url = "";
					for(i = 0; i < UrlArr.length-1; i++){
						Url = Url + UrlArr[i] + '/';
					}
					Element.setWidth('outerImageContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
					Element.setHeight('outerImageContainer', Math.round(arrayPageSize[3]-90) + (borderSize * 2));
					Element.setInnerHTML('imageContainer', '<APPLET width="'+Math.round(arrayPageSize[2]-40)+'" height="'+Math.round(arrayPageSize[3]-90)+'" codebase="'+Url+'" code="'+UrlArr[UrlArr.length-1]+'"></APPLET>');
					Element.setWidth('imageDataContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
				}
				else if (FilUrl.indexOf(".wmv")>0) {
					// Video - .wmv & .flv
					// http://www.jeroenwijering.com/extras/readme.html v. 3.11
					// http://oos.moxiecode.com/flvplayer/ v1.0b
					Element.setWidth('outerImageContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
					Element.setHeight('outerImageContainer', Math.round(arrayPageSize[3]-90) + (borderSize * 2));
					// Element.setInnerHTML('imageContainer', '<embed id="flvplayer" src="/include/flvplayer.swf" width="100%" height="'+Math.round(arrayPageSize[3]-95)+'" allowfullscreen="true" allowscriptaccess="always" flashvars="&file='+FilUrl.replace(".wmv", ".flv")+'&image='+FilUrl+'.jpeg&logo=/include/Pics/logoThumb.gif&volume=100&autostart=true&repeat=true&overstretch=none" />');
					Element.setInnerHTML('imageContainer', '<embed id="flvplayer" bgcolor="#000000" src="/include/flvplayer.swf" width="100%" height="'+Math.round(arrayPageSize[3]-90)+'" allowfullscreen="true" allowscriptaccess="always" flashvars="&flvToPlay='+FilUrl.replace(".wmv", ".flv")+'&logo=/include/Pics/logoThumb.gif&scaleMode=none&allowFullScreen=true&loop=true&defaultVolume=100&buffer=4&scaleMode=double" />');
					Element.setWidth('imageDataContainer', Math.round(arrayPageSize[2]-40) + (borderSize * 2));
					
				}
				
				Element.show('caption');
				Element.setInnerHTML( 'caption', "<span class=t10_grey><b>" + imageArray[activeImage][1] + "</b><br>"+imageArray[activeImage][2]);
				
				// displays text
			//	Element.show('numberDisplay');
			//	Element.setInnerHTML( 'numberDisplay', imageArray[activeImage][2] + "");
				
				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() { } } 
				);
			}
			
		}		
	},
	

	
	//
	//	end()
	//
	end: function() {

		Element.setInnerHTML('imageContainer', '<img id="lightboxImage">');
		Element.hide('lightbox');
		new Effect.Fade('overlay', { duration: 0.2});
		showSelectBoxes();
		showSelectIframes();
		
		// Tilføjer scrollbaren
		var css = document.compatMode=="CSS1Compat" ? document.documentElement.style : document.body.style;
	    css.overflow = css.overflow=="hidden" ? "" : "";
	}
}

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

//
// 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-20),windowHeight) 
	return arrayPageSize;
}

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


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

function showSelectIframes(){
	selects = document.getElementsByTagName("iframe");
	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";
	}
}

function hideSelectIframes(){
	selects = document.getElementsByTagName("iframe");
	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);