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


//	Refbox v2.02
//	by Lokesh Dhakar - http://www.huddletogether.com
//	3/31/06
//
//	For more information on this script, visit:
//	http://huddletogether.com/projects/refbox2/
//
//	Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
//	
//	Credit also due to those who have helped, inspired, and made their code available to the public.
//	Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.org), Thomas Fuchs(mir.aculo.us), and others.
//
//
// -----------------------------------------------------------------------------------

var textNaechstes = "<img src=\"images/ansprechpartner/pfeil-rechts.jpg\" border=0>";
var textVorheriges = "<img src=\"images/ansprechpartner/pfeil-links.jpg\" border=0>";
var textDownload= "<img src=\"images/jobs/pdf-symbol.jpg\" border=0>";
var RefSchonda = 0;
var RefSchondda = 0;
var RefWeite = 0;
var RefHoehe = 0;
var RefTabelleHTML='<table width="500" cellpadding="0" border=0 cellspacing="0" style="table-layout:fixed;" bgcolor="#E3E3E3">' +
'<colgroup><col width="25"><col width="200"><col width="235"><col width="15"><col width="25"></colgroup>' +
'<tr><td><img src="images/leer.gif" width="5" height="25"></td>' +
'<td><img src="images/leer.gif" width="1" height="2"></td>' +
'<td><img src="images/leer.gif" width="5" height="2"></td>' +
'<td><img src="images/leer.gif" width="1" height="2"></td>' +
'<td><img src="images/leer.gif" width="5" height="2"></td></tr>' +
'' +
'<tr><td colspan=5 id="RefLogo"></td></tr>' +
'' +
'<tr><td colspan=5><img src="images/leer.gif" width="50" height="25"></td></tr>' +
'' +
'<tr><td><img src="images/leer.gif" width="2" height="2"></td>' +
'<td valign=top align=left id=RefTeambild colspan=3></td>' +
'<td><img src="images/leer.gif" width="2" height="2"></td></tr>' +
'' +
'<tr><td colspan=5><img src="images/leer.gif" width="50" height="25"></td></tr>' +
'' +
'<tr><td><img src="images/leer.gif" width="50" height="15"></td>' +
'<td id="tdrefbottomPrev"></td>' +
'<td ></td>' +
'<td id="tdrefbottomNext" align="right"></td>' +
'<td><img src="images/leer.gif" width="50" height="2"></td></tr>' +
'' +
'<tr><td colspan=5><img src="images/leer.gif" width="50" height="25"></td></tr>' +
'' +
'<tr><td><img src="images/leer.gif" width="2" height="2"></td>' +
'<td valign=top align=left id="ntertext" class="BildUntertext" colspan=3>WW</td>' +
'<td><img src="images/leer.gif" width="2" height="2"></td></tr>' +
'' +
'<tr><td><img src="images/leer.gif" width="50" height="15"></td>' +
'<td id="tdrefbottomDownload" colspan=3></td>' +
'<td><img src="images/leer.gif" width="50" height="2"></td></tr>' +
'' +
'<tr><td colspan=5><img src="images/leer.gif" width="50" height="25"></td></tr>' +
'' +
'</table>';



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

//
//	Global Variables
//
var refimageArray = new Array;
var refactiveImage;

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

//
//	Refbox Class Declaration
//	- initialize()
//	- start()
//	- changeImage()
//	- resizeImageContainer()
//	- showImage()
//	- updateDetails()
//	- updateNav()
//	- enableKeyboardNav()
//	- disableKeyboardNav()
//	- keyboardNavAction()
//	- preloadNeighborImages()
//	- end()
//
//	Structuring of code inspired by Scott Upton (http://www.uptonic.com/)
//
var Refbox = Class.create();

Refbox.prototype = {
	
	// initialize()
	// Constructor runs on completion of the DOM loading. Loops through anchor tags looking for 
	// 'Refbox' 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.getElementById("Haupt").contentWindow.document.getElementsByClassName){ return; }
		var anchors = document.getElementById("Haupt").contentWindow.document.getElementsByClassName('refbox');

		// loop through all anchor tags
		for (var i=0; i<anchors.length; i++){
			var anchor = anchors[i];
			
				anchor.onclick = function () {myRefbox.start(this); return false;}
			
		}

		if (anchors.length>0)
			{
			Hauptrefbox=myRefbox;
			}
		var objBody = document.getElementsByTagName("body").item(0);
		
		
		var objOverlay = document.createElement("div");
		objOverlay.setAttribute('id','refoverlay');
		objOverlay.style.display = 'none';
		position=getAbPosition('Haupt');
		
		objOverlay.style.left= (position[1]+100) + 'px';
		objOverlay.style.width= '500px';
		
//		objOverlay.onclick = function() { myRefbox.end(); return false; }
		objBody.appendChild(objOverlay);
		
		var objRefbox = document.createElement("div");
		objRefbox.setAttribute('id','refbox');
		objRefbox.style.display = 'none';
		objBody.appendChild(objRefbox);
		Element.setTop( 'refbox', position[0]);
		Element.setLeft( 'refbox', position[1]);
		Element.setWidth( 'refbox', position[3]);
	
		var objOuterImageContainer = document.createElement("div");
		objOuterImageContainer.setAttribute('id','refouterImageContainer');
		objOuterImageContainer.onclick = function() { return false; }
		objRefbox.appendChild(objOuterImageContainer);
//document.getElementById('refouterImageContainer').style.height="1px";

		var objImageContainer = document.createElement("div");
		objImageContainer.setAttribute('id','refimageContainer');
		objOuterImageContainer.appendChild(objImageContainer);
		
		var objRefboxImage = document.createElement("img");
		objRefboxImage.setAttribute('id','refboxImage');
		objImageContainer.appendChild(objRefboxImage);

		var objLoading = document.createElement("div");
		objLoading.setAttribute('id','refloading');
		objImageContainer.appendChild(objLoading);
	
		var objLoadingLink = document.createElement("a");
		objLoadingLink.setAttribute('id','refloadingLink');
		objLoadingLink.setAttribute('href','#');
		objLoadingLink.onclick = function() { myRefbox.end(); return false; }
		objLoading.appendChild(objLoadingLink);
	
		var objLoadingImage = document.createElement("img");
		objLoadingImage.setAttribute('src', fileLoadingImage);
		objLoadingLink.appendChild(objLoadingImage);

		var objImageDataContainer = document.createElement("div");
		objImageDataContainer.setAttribute('id','refimageDataContainer');
		objImageDataContainer.className = 'clearfix';
		objRefbox.appendChild(objImageDataContainer);

		var objImageData = document.createElement("div");
		objImageData.setAttribute('id','refimageData');
		objImageDataContainer.appendChild(objImageData);

		var objImageDetails = document.createElement("div");
		objImageDetails.setAttribute('id','refimageDetails');
		objImageData.appendChild(objImageDetails);
		Element.setInnerHTML( 'refimageDetails', RefTabelleHTML);

		document.getElementById('RefLogo').innerHTML='<map name="RefboxAreaMap" id="RefboxAreaMap"></map><img border="0" src="images/ansprechpartner/logo-ansprechpartner-' + sp + '.jpg" usemap="#RefboxAreaMap" width="500" height="75">';
		var objRefboxAreaMap = document.createElement("area");
		objRefboxAreaMap.setAttribute('shape','rect');
		objRefboxAreaMap.setAttribute('coords','411, 46, 499, 74');

		objRefboxAreaMap.setAttribute('href','#');
		objRefboxAreaMap.onclick = function() { myRefbox.end(); return false; }
		document.getElementById('RefboxAreaMap').appendChild(objRefboxAreaMap);
		objImageDataBottom =document.getElementById('tdrefbottomPrev');
		var objBottomPrev = document.createElement("div");
		objBottomPrev.setAttribute('id','refbottomPrev');
		objBottomPrev.setAttribute('class','BottomLinks');
		objImageDataBottom.appendChild(objBottomPrev);
		
		var objrefprevLink = document.createElement("a");
		objrefprevLink.setAttribute('id','refprevLink');
		objrefprevLink.setAttribute('href','#');
		objrefprevLink.onclick = function() {
				myRefbox.changeImage(refactiveImage - 1); return false;
			}
		objBottomPrev.appendChild(objrefprevLink);
		Element.setInnerHTML( 'refprevLink', textVorheriges);

		objImageDataBottom =document.getElementById('tdrefbottomNext');
		var objrefbottomNext = document.createElement("div");
		objrefbottomNext.setAttribute('id','refbottomNext');
		objrefbottomNext.setAttribute('class','BottomLinks');
		objImageDataBottom.appendChild(objrefbottomNext);

		var objrefnextLink = document.createElement("a");
		objrefnextLink.setAttribute('id','refnextLink');
		objrefnextLink.setAttribute('href','#');
		objrefnextLink.onclick = function() {
				myRefbox.changeImage(refactiveImage + 1); return false;
			}

		objrefbottomNext.appendChild(objrefnextLink);
		Element.setInnerHTML( 'refnextLink', textNaechstes);

	},
	
	//
	//	start()
	//	Display overlay and refbox. If image is part of a set, add siblings to refimageArray.
	//
	start: function(imageLink) {	
		hideSelectBoxes();

		var arrayPageSize = getPageSize();
		Element.setHeight('refoverlay', arrayPageSize[1]);
		new Effect.Appear('refoverlay', { duration: 0.5, from: 0.0, to: 1.0 });

		refimageArray = [];
		imageNum = 0;		

		if (!document.getElementsByClassName){ return; }
		var anchors = document.getElementById("Haupt").contentWindow.document.getElementsByClassName('refbox');

		var bildindex=parseInt(imageLink.getAttribute('rel'));
		for (r=0;r<bbild[bildindex].length;r++ )
			{
			// add single image to refimageArray
			refimageArray.push(new Array(bild[bildindex], bbild[bildindex][r], text[bildindex], download[bildindex]));			
			}

		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var refboxTop = arrayPageScroll[1] ;
//		refboxTop = arrayPageScroll[1] ;
		Element.setTop('refbox', refboxTop);
		Element.show('refbox');
		parent.KlickRefbox=this;
		this.changeImage(imageNum);
	},

	//
	//	changeImage()
	//	Hide most elements and preload image in preparation for resizing image container.
	//
	changeImage: function(imageNum) {
	
		refactiveImage = imageNum;
			if (RefSchonda!=1)
				{
			new Effect.Parallel(
			[ new Effect.SlideUp( 'refimageDataContainer', { sync: true, duration: resizeDuration + 0.25, from: 0.0, to: 0.0 }), 
			  new Effect.Fade('refimageDataContainer', { sync: true, duration: 1.0 }) ], 
			{ duration: 0.65} 
		);

		Element.hide('refbottomPrev');
		Element.hide('refbottomNext');

		Element.hide('refimageDataContainer');
		Element.hide('refboxImage');
//		Element.hide('numberDisplay');		
		}			
			// update global var
		// hide elements during transition
//		Element.show('loading');





//		Element.hide('refbottomPrev');
//		Element.hide('refbottomNext');
		
		RefSchonda=1;
		imgPreloader = new Image();
		// once image is preloaded, resize image container
		
		imgPreloader.onload=function(){
		
			Element.setSrc('refboxImage', refimageArray[refactiveImage][0]);
//			myRefbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
			myRefbox.resizeImageContainer(500, 1);
//			myRefbox.resizeImageContainer(500, imgPreloader.height);
		}
		imgPreloader.src = refimageArray[refactiveImage][1];
	},

	//
	//	resizeImageContainer()
	//
	resizeImageContainer: function( imgWidth, imgHeight) {

		
		// get current height and width
		this.wCur = Element.getWidth('refouterImageContainer');
		this.hCur = Element.getHeight('refouterImageContainer');

		// scalars based on change from old to new
		this.xScale = ((imgWidth  + (borderSize * 2)) / this.wCur) * 100;
		this.yScale = ((imgHeight  + (borderSize * 2)) / this.hCur) * 100;

		// calculate size difference between new and old image, and resize if necessary
		wDiff = (this.wCur - borderSize * 2) - imgWidth;
		hDiff = (this.hCur - borderSize * 2) - imgHeight;

		if(!( hDiff == 0)){ new Effect.Scale('refouterImageContainer', this.yScale, {scaleX: false, duration: resizeDuration, queue: 'front'}); }
		if(!( wDiff == 0)){ new Effect.Scale('refouterImageContainer', this.xScale, {scaleY: false, delay: resizeDuration, duration: resizeDuration}); }

		// if new and old image are same size and no scaling transition is necessary, 
		// do a quick pause to prevent image flicker.
		if((hDiff == 0) && (wDiff == 0)){
			if (navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } else { pause(100);} 
		}

//		Element.setHeight('refprevLink', imgHeight);
//		Element.setHeight('refnextLink', imgHeight);
		RefWeite = imgWidth;
		RefWeite = 500;
		RefHoehe = imgHeight;
//		Element.setWidth( 'refimageDataContainer', RefWeite + (borderSize * 2));
		Element.setWidth( 'refimageData', RefWeite);
//		Element.setWidth( 'UeberTabelle', imgWidth - 120-(borderSize * 3));
//		Element.setWidth( 'UeberUntertext', (RefWeite - 120-(borderSize * 3)));

		this.showImage();
	},
	
	//
	//	showImage()
	//	Display image and begin preloading neighbors.
	//
	showImage: function(){
		Element.hide('refloading');
//alert(document.getElementById('refboxImage').style);
		new Effect.Appear('refboxImage', { duration: 0.1, queue: 'end', afterFinish: function(){ myRefbox.updateDetails(); } });
//		myRefbox.updateDetails(); 

		this.preloadNeighborImages();

	},

	//
	//	updateDetails()
	//	Display caption, image number, and bottom nav.
	//
	updateDetails: function() {

		Element.setWidth( 'refimageDataContainer', RefWeite + (borderSize * 2));
		Element.setWidth( 'refimageData', RefWeite);
//		Element.setWidth( 'refbox', RefWeite);
//		Element.setWidth( 'UeberUntertext', (RefWeite - 120-(borderSize * 3)));

		Element.show('RefTeambild');
		Element.setInnerHTML( 'RefTeambild', '<img src="' + refimageArray[refactiveImage][1]+ '" border=0>');
		Element.show('ntertext');
		Element.setInnerHTML( 'ntertext', '<span>'+refimageArray[refactiveImage][2]+'</span>');
		// if image is part of set display 'Image x of x' 
//		alert(document.getElementById('refimageDataContainer').offsetHeight);		
//		document.getElementById('numberDisplay').innerHTML="";
//		Element.show('numberDisplay');
		if (refimageArray.length>1){
		for (xt=0;xt<refimageArray.length;xt++){

			var objBildLink = document.createElement("a");
			objBildLink.setAttribute('id','BildLink' +xt);
			objBildLink.setAttribute('href','#');
			objBildLink.onclick = function() {
					myRefbox.changeImage(parseInt(this.id.replace("BildLink","")));return false;
				}
/*
			document.getElementById('numberDisplay').appendChild(objBildLink);
			if (xt==refactiveImage)
				{
				Element.setInnerHTML( 'BildLink' +xt, textAktivBild);
				}
			else
				{
				Element.setInnerHTML( 'BildLink' +xt, textPassivBild);
				}
*/
		}
		}
		myRefbox.updateNav();

		if (RefSchondda!=1)
				{
				
		new Effect.Parallel(
			[ new Effect.SlideDown( 'refimageDataContainer', { sync: true, duration: resizeDuration + 0.25, from: 0.0, to: 1.0 }), 
			  new Effect.Appear('refimageDataContainer', { sync: true, duration: 1.0 }) ], 
			{ duration: 0.65, afterFinish: function(){	 if ((Element.getHeight('refbox')+Element.getTop('refbox'))> arrayPageSize[1])	{	Element.setHeight('refoverlay', Element.getHeight('refbox')+Element.getTop('refbox')+20);} else {	Element.setHeight('refoverlay', arrayPageSize[1]);} }} 
		);
		}
		RefSchondda=1;
	},
	//
	//	updateNav()
	//	Display appropriate previous and next hover navigation.
	//
	updateNav: function() {

//		Element.show('hoverNav');				
		
		//Down(refimageArray[refactiveImage][2]);

		// if not first image in set, display prev image button

		// if not last image in set, display next image button
		
		//Down(refimageArray[refactiveImage][2]);
		
		if(document.getElementById('refbottomDownload'))
			{
			Element.hide('refbottomDownload');
			}
		else
			{
//			Element.show('refbottomDownload');
			}

		// if not first image in set, display prev image button
		if(refimageArray[refactiveImage][3]!= "" )
			{
			document.getElementById('tdrefbottomDownload').innerHTML="";
			objImageDataBottom =document.getElementById('tdrefbottomDownload');
			var objBottomDownload = document.createElement("div");
			objBottomDownload.setAttribute('id','refbottomDownload');
			objBottomDownload.setAttribute('class','BottomLinks');
			objImageDataBottom.appendChild(objBottomDownload);

			var objDownloadLink = document.createElement("a");
			objDownloadLink.setAttribute('id','DownloadLink');
			objDownloadLink.setAttribute('target','_blank');
			objDownloadLink.setAttribute('href',refimageArray[refactiveImage][3]);
			if (navigator.appVersion.match(/\bMBSIE\b/))
				{
				objDownloadLink.onclick = function() {
					Klick();
					}
				objDownloadLink.setAttribute('title','Zum Downloaden bitte mit der rechten Maustaste "Ziel speichern unter" anklicken');
				}
			else
				{
				objDownloadLink.setAttribute('title','Zum Downloaden bitte mit der rechten Maustaste "Ziel speichern unter" anklicken');
				}
//			objDownloadLink.setAttribute('target','_blank');
	
			objBottomDownload.appendChild(objDownloadLink);
			Element.setInnerHTML( 'DownloadLink', textDownload);
			
			Element.show('refbottomDownload');
//			alert(document.getElementById('refbottomDownload').style.visibility);	
			//Element.setInnerHTML('refbottomPrev','');

/*			document.getElementById('refprevLink').onclick = function() {
				myRefbox.changeImage(refactiveImage - 1); return false;
			}
*/
		}
/*		else
			{
			objDownloadLink=document.getElementById('refbottomDownload');
			objDownloadLink.removeAttribute('href');
//			document.getElementById("refbottomDownload").removeAttributeNode(document.getElementById("refbottomDownload").getAttributeNode("href"));
			objDownloadLink.setAttribute('href',refimageArray[refactiveImage][2]);
			alert (refimageArray[refactiveImage][2] + ":" +objDownloadLink.getAttribute('href')) ;
			objDownloadLink.setAttribute('title','Zum Downloaden bitte mit der rechten Maustaste "Ziel speichern unter" anklicken');
			}
*/		if(refimageArray[refactiveImage][3]!= "" )
			{
			
			Element.show('refbottomDownload');
			}
		if(refactiveImage != 0){
			
			Element.show('refbottomPrev');
		}
		else
			{
			
			Element.hide('refbottomPrev');
		}

		// if not last image in set, display next image button
		if(refactiveImage != (refimageArray.length - 1)){
			Element.show('refbottomNext');
		}
		else
			{
			Element.hide('refbottomNext');
		}
		// if not last image in set, display next image button
		if(refactiveImage != (refimageArray.length - 1)){
			Element.show('refbottomNext');
		}
		else
			{
			Element.hide('refbottomNext');
		}
		this.disableKeyboardNav();
	},

	//
	//	enableKeyboardNav()
	//
	enableKeyboardNav: function() {
		document.onkeydown = this.keyboardAction; 
	},

	//
	//	disableKeyboardNav()
	//
	disableKeyboardNav: function() {
		document.onkeydown = '';
	},

	//
	//	keyboardAction()
	//
	keyboardAction: function(e) {
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}

		key = String.fromCharCode(keycode).toLowerCase();
		
		if((key == 'x') || (key == 'o') || (key == 'c')){	// close refbox
			myRefbox.end();
		} else if(key == 'p'){	// display previous image
			if(refactiveImage != 0){
				myRefbox.disableKeyboardNav();
				myRefbox.changeImage(refactiveImage - 1);
			}
		} else if(key == 'n'){	// display next image
			if(refactiveImage != (refimageArray.length - 1)){
				myRefbox.disableKeyboardNav();
				myRefbox.changeImage(refactiveImage + 1);
			}
		}


	},

	//
	//	preloadNeighborImages()
	//	Preload previous and next images.
	//
	preloadNeighborImages: function(){

		if((refimageArray.length - 1) > refactiveImage){
			preloadNextImage = new Image();
			preloadNextImage.src = refimageArray[refactiveImage + 1][1];
		}
		if(refactiveImage > 0){
			preloadPrevImage = new Image();
			preloadPrevImage.src = refimageArray[refactiveImage - 1][1];
		}
	
	},

	//
	//	end()
	//
	end: function() {
	
			new Effect.Parallel(
			[ new Effect.SlideUp( 'refimageDataContainer', { sync: true, duration: resizeDuration + 0.25, from: 0.0, to: 1.0 }), 
			  new Effect.Fade('refimageDataContainer', { sync: true, duration: 1.0 }) ], 
			{ duration: 0.65, afterFinish: function(){		RefSchondda=0;
//		this.disableKeyboardNav();
		Element.hide('refbox');
		Element.hide('refimageDataContainer');
		Hauptrefbox="";
		Element.hide('ntertext');
		Element.setInnerHTML( 'ntertext', '');
		Element.hide('RefTeambild');
		Element.setInnerHTML( 'RefTeambild', '');
		
		
		
		new Effect.Fade('refoverlay', { duration: 0.2});
		showSelectBoxes();
		RefSchonda = 0;
} }
		);
//		new Effect.SlideUp( 'refimageDataContainer', { sync: true, duration: resizeDuration + 0.25, from: 0.0, to: 1.0});
	}

}

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

//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function initRefbox() { myRefbox = new Refbox();}
Event.observe(window, 'load', initRefbox, false);