// treeview with dynamic nodes

var lastNode = "";
var nodeBuilding = false;
var resetTimer = -1;
var treeId = "";
					 
function toggleNode(nodeId) {
	if (document.getElementById("td_"+nodeId).innerHTML=="") buildNode(nodeId); else toggle(nodeId);
}	 

function toggle(nodeId) { 
	var nodeDiv = document.getElementById("td_"+nodeId);
	var nodeButton = document.getElementById("tb_"+nodeId);
	nodeDiv.className = (nodeDiv.className == "expanded") ? "collapsed" : "expanded";
	nodeButton.src = (nodeDiv.className == "collapsed") ? viewFolder + "/images/tree/tree_plus.gif" : viewFolder + "/images/tree/tree_min.gif";
}	 
	
function buildNode(nodeId) {
	//alert(nodeId)
	if (nodeBuilding) return;
	var nodeDiv = document.getElementById("td_"+nodeId);
	if (lastNode=="" && nodeDiv) {
		if (nodeDiv.innerHTML=="") {
			nodeDiv.innerHTML = '<marquee direction="right" loop="-1" style="width:64px; line-height:14px;">...</marquee>';
			toggle(nodeId);
			lastNode = nodeId;
			nodeBuilding = true;
			resetTimer = setTimeout(resetTreeUpdate, 25*1000);
			callToServer(aspLink + "?alias=" + siteAlias + "&id=" + pageId + "&treeFragment=true" + "&version=" + version + "&treeId=" + treeId + "&conceptId=" + nodeId);
		} 
		else {
			toggle(nodeId);
		}	
	}	
}	 

function updateTree() {		
	clearTimeout(resetTimer);
	var nodeDiv = document.getElementById("td_"+lastNode);
	treeFrameDocument = getFrameDoc();
	if (lastNode!="" && nodeDiv && treeFrameDocument.getElementById("subtree")) {
		nodeDiv.innerHTML = treeFrameDocument.getElementById("subtree").innerHTML;
	}
	lastNode = "";
	nodeBuilding = false; 
}	 

function resetTreeUpdate() {
	//alert();
	if (IFrameObj) IFrameDoc.location.replace("");
	if (lastNode!="") {
	  var nodeDiv = document.getElementById("td_" + lastNode);
		if (lastNode != "" && nodeDiv) {
			nodeDiv.innerHTML = "";
		}
		toggle(lastNode);
		lastNode = "";
	}	
	nodeBuilding = false;
}

function showNode(nodeId, nodeHome) {			
  //alert(nodeId);										
	var _url;
	if (nodeHome.indexOf("http://") == 0) {
		_url = nodeHome;
		nameParts = nodeId.split("/");
		namespace = nameParts[nameParts.length-2];
		//alert(namespace);
		switch (namespace) {
		  case "aat":
				document.location = _url;
		    break;
		  default:  
				openWindow(_url, "skosconcept", "toolbar=yes,menubar=yes,location=yes,scrollbars=yes,resizable=yes");
		}		
	}
	else {
		/*
		_url = aspLink + "?alias=" + siteAlias + "&page_alias=" + "lijst" + "&showSearch=species" + "&show=" + "result" + "&taxid=" + nodeId;
		document.location = _url;
		*/
		_url = "http://www.nederlandsesoorten.nl/get?site=nlsr&view=nlsr&page_alias=conceptcard&cid=" + nodeId;
		openWindow(_url);
		//openWindow(_url, "skosconcept", "toolbar=yes,menubar=yes,location=yes,scrollbars=yes,resizable=yes");
		
	}
	//var _url = aspLink + "?alias=" + siteAlias + "&id=" + pageId + "&termnumber=" + nodeId + "&version=skos";
}	 



function updateNode() {		
	if (lastNode!="" && nodeframe.document.all("nodepage")) {
		document.all("divNode").innerHTML = nodeframe.document.all("nodepage").innerHTML;	
	}
	lastNode="";														 
	//document.all("divNode").style.top = body.scrollTop*1 + 200;
	document.all("divNode").style.left = (body.clientWidth / 2) + 150;
	document.all("divNode").style.display = "block";
}	 
	
	
var IFrameObj; // our IFrame object

function getFrameDoc() {
	if (IFrameObj.contentDocument) {
		// For NS6
		return IFrameObj.contentDocument; 
	} 
	else if (IFrameObj.contentWindow) {
		// For IE5.5 and IE6
		return IFrameObj.contentWindow.document;
	} 
	else if (IFrameObj.document) {
		// For IE5
		return IFrameObj.document;
	} 
	else {
		return null;
	}
}

function callToServer(URL) {
	//alert(URL)
	if (!document.createElement) {return true};
	var IFrameDoc; // our IFrame document
	if (!IFrameObj && document.createElement) {
		// create the IFrame and assign a reference to the
		// object to our global variable IFrameObj.
		// this will only happen the first time 
		// callToServer() is called
	 try {
			var tempIFrame=document.createElement('iframe');
			tempIFrame.setAttribute('id','RSIFrame');
			tempIFrame.style.border='0px';
			tempIFrame.style.width='0px';
			tempIFrame.style.height='0px';
			if (false) {
				tempIFrame.style.width='400px';
				tempIFrame.style.height='300px';
				tempIFrame.style.position = 'absolute';
				//tempIFrame.style.left = '200px;'
			}
			IFrameObj = document.body.appendChild(tempIFrame);
			
			if (document.frames) {
				// this is for IE5 Mac, because it will only
				// allow access to the document object
				// of the IFrame if we access it through
				// the document.frames array
				IFrameObj = document.frames['RSIFrame'];
			}
		} catch(exception) {
			// This is for IE5 PC, which does not allow dynamic creation
			// and manipulation of an iframe object. Instead, we'll fake
			// it up by creating our own objects.
			iframeHTML='\&lt;iframe id="RSIFrame" style="';
			iframeHTML+='border:0px;';
			iframeHTML+='width:0px;';
			iframeHTML+='height:0px;';
			iframeHTML+='"&gt;&lt;\/iframe&gt;';
			document.body.innerHTML+=iframeHTML;
			IFrameObj = new Object();
			IFrameObj.document = new Object();
			IFrameObj.document.location = new Object();
			IFrameObj.document.location.iframe = document.getElementById('RSIFrame');
			IFrameObj.document.location.replace = function(location) {
				this.iframe.src = location;
			}
		}
	}
	
	if (navigator.userAgent.indexOf('Gecko') !=-1 && !IFrameObj.contentDocument) {
		// we have to give NS6 a fraction of a second
		// to recognize the new IFrame
		setTimeout("callToServer('" + URL + "')",10);
		return false;
	}
	
	if (IFrameObj.contentDocument) {
		// For NS6
		IFrameDoc = IFrameObj.contentDocument; 
	} else if (IFrameObj.contentWindow) {
		// For IE5.5 and IE6
		IFrameDoc = IFrameObj.contentWindow.document;
	} else if (IFrameObj.document) {
		// For IE5
		IFrameDoc = IFrameObj.document;
	} else {
		return true;
	}
	
	IFrameDoc.location.replace(URL);
	return false;
}