//**************************************************************** 
//	CourseCenter Tree Script 1.0
//	(c) 2002-2005 Jonatan Söderberg, Framehouse AB
//  Changelog:
//	Modified:	2004-04-21 (Fixed id for NodeImg, Added FirstLevelFlat)
//	Added:		2004-05-26 (SiteMakerNode)
//**************************************************************** 

var ccTrees = new Array;
var clientBrowser = 0;
var ua = window.navigator.userAgent.toLowerCase();

if((i = ua.indexOf("msie")) != -1){
	if(parseFloat("0" + ua.substr(i+5), 10) >= 4) clientBrowser = 1;
}else if((ua.indexOf("mozilla")!=-1) && (ua.indexOf("spoofer")==-1) && (ua.indexOf("compatible")==-1) && (ua.indexOf("opera")==-1)&& (ua.indexOf("webtv")==-1) && (ua.indexOf("hotjava")==-1)){
	if(parseInt(navigator.appVersion) == 4) clientBrowser = 2;
	else clientBrowser = 4;
}else if(typeof(window.controllers) != "undefined" && typeof(window.locationbar) != "undefined"){
	clientBrowser = 3;
}

function ccHtmlWriter(){
	this.innerHtml = "";
	this.Mode = 0;
	this.GetHtml = ccHtmlWriterGetHtml;
	this.write = ccHtmlWriterWrite
}

function ccHtmlWriterGetHtml(){
	var innerHtml = this.innerHtml;
	this.innerHtml = "";
	return innerHtml;
}

function ccHtmlWriterWrite(html){
	if(this.Mode == 0)
		document.write(html)
	else
		this.innerHtml += html;
}

function ccTree(nodeObject){
	this.HtmlWriter = new ccHtmlWriter();
	this.Root = null;
	this.ID = -1;
	this.Name = "xxx";
	this.Nodes = new Array;
	this.RenderOptions = new ccTreeRenderOptions();
	this.yPos = 0;
	this.Init = ccTreeInit;
	this.Register = ccTreeRegister;
	this.Render = ccTreeRender;
	this.Connect = ccTreeConnect;
	this.RenderBegin = null;
	this.RenderEnd = null;
	this.SelectedNodeIndex = -1;
	this.NodeRenderBegin = ccNodeRenderBegin;
	this.NodeRenderEnd = ccNodeRenderEnd;
	this.Expand = ccTreeExpand;
	this.Contract = ccTreeContract;

	//Initialize...
	this.Register(nodeObject);
}


function ccTreeRegister(nodeObject){
	var RootNode = new ccNode(nodeObject);
	RootNode.TreeObject = this;
	this.Root = RootNode;
	this.Name = "Tree" + ccTrees.length;
	this.ID = ccTrees.length;
	ccTrees[ccTrees.length] = this;
}


function ccTreeInit(){
	if(this.Root)
		this.Root.Init(null, "", 0);
}

function ccTreeRender(){
	if(this.RenderBegin != null) this.RenderBegin();

	if(this.Root)
		this.Root.Render();	
	
	if(this.RenderEnd != null) this.RenderEnd();
	this.Connect();
}

function ccTreeConnect(){
	if(this.HtmlWriter.Mode != 0) return;
	if(this.Root)
		this.Root.Connect();	
	
	this.Contract();
}

function ccTreeExpand(){
	var str = ""
	for(var i=0;i<this.Nodes.length;i++)
		if(this.Nodes[i].ChildNodes.length > 0)	this.Nodes[i].Expand();
}

function ccTreeContract(){
	for(var i=0;i<this.Nodes.length;i++)
		if(this.Nodes[i].ChildNodes.length > 0){
			for(var j=0;j<this.Nodes[i].ChildNodes.length;j++){
				this.Nodes[i].ChildNodes[j].Contract()
				if(this.Nodes[i] != this.Root) this.Nodes[i].Hide();
			}
		}else
			if(this.Nodes[i] != this.Root) this.Nodes[i].Hide();
	if(this.Root.NodeObject == null)
		this.Root.Expand();
}

function ccNode(nodeObject){ 
	this.NodeObject = nodeObject;
	this.TreeObject = null;
	this.Object = null;
	this.ID = -1;
	this.ClientID = -1;
	this.State = 1;
	this.Parent = null;
	this.ChildNodes = new Array;
	this.Tree = "";
	this.LastNode = true;
	this.innerHtml = "";
	this.ImgIcon = null;
	this.ImgNode = null;
	this.IconFolderOpen = "";
	this.IconFolderClose = "";
	this.IconDocument = "";
	this.Icon = "";
	this.CustomChildren = false;
	
	//Methods...	
	this.Init = ccNodeInit;
	this.Register = ccNodeRegister;
	this.Render = ccNodeRender;
	this.RenderBegin = null;
	this.RenderEnd = null;
	this.RenderNodeObject = ccNodeObjectRender;
	this.Connect = ccNodeConnect;
	this.ConnectNodeObject = ccNodeObjectConnect;
	this.AddChild = ccNodeAdd;
	this.Delete = ccNodeDel;
	this.AppendChild = ccNodeAppend;
	this.Show = ccNodeShow;
	this.Hide = ccNodeHide;
	this.Expand = ccNodeExpand;
	this.Contract = ccNodeContract;
	this.Select = ccNodeSelect;
	this.Unselect = ccNodeUnselect;
	this.IsChild = ccNodeIsChild;
	this.HasChildren = ccNodeHasChildren;
}

function ccNodeHasChildren(node){
	return (this.CustomChildren || this.ChildNodes.length > 0);
}

function ccNodeIsChild(node){
	var IsChild = false;
	for(var iNode=0;iNode<this.ChildNodes.length;iNode++){
		if(this.ChildNodes[iNode] == node) return true;
		IsChild = IsChild || this.ChildNodes[iNode].IsChild(node);
	}
	return IsChild;
}

function ccNodeDel(unreg){
	this.TreeObject.SelectedNodeIndex = -1;
	
	if(unreg){
		var newNodes = new Array();
		for(var i=0;i<this.TreeObject.Nodes.length;i++){
			if(this.TreeObject.Nodes[i] != this)
				newNodes[newNodes.length] = this.TreeObject.Nodes[i]
		}
		this.TreeObject.Nodes = newNodes;
		for(var i=0;i<this.ChildNodes.length;i++)
			this.ChildNodes.Delete(true);
	}	
	
	if(this.Parent != null){
		var newNodes = new Array();
		for(var i=0;i<this.Parent.ChildNodes.length;i++){
			if(this.Parent.ChildNodes[i] != this)
				newNodes[newNodes.length] = this.Parent.ChildNodes[i]
		}	
		this.Parent.ChildNodes = newNodes;
		if(newNodes.length == 0) this.Parent.State = 1;
	}
	
	this.Parent = null;
}


function ccNodeAppend(node){
	this.ChildNodes[this.ChildNodes.length] = node;
	node.Parent = this;
}


function ccNodeInit(parentNode, strTree, isLast){
	if(this.ID == -1) this.Register();
	this.LastNode = isLast;
	this.Tree = strTree;
	this.Parent = parentNode;
	var RenderOptions = this.TreeObject.RenderOptions;
	if(this.NodeObject != null){
		if(this.NodeObject.Init) this.NodeObject.Init();

		if(this.IconFolderOpen == "") this.IconFolderOpen = ((this.Icon != "")?(this.Icon):(((this.NodeObject.IconFolderOpen != null)?(this.NodeObject.IconFolderOpen):(this.TreeObject.RenderOptions.IconFolderOpen))));
		if(this.IconFolderClose == "") this.IconFolderClose = ((this.Icon != "")?(this.Icon):(((this.NodeObject.IconFolderClose != null)?(this.NodeObject.IconFolderClose):(this.TreeObject.RenderOptions.IconFolderClose))));
		if(this.IconDocument == "") this.IconDocument = ((this.Icon != "")?(this.Icon):(((this.NodeObject.IconDocument != null)?(this.NodeObject.IconDocument):(this.TreeObject.RenderOptions.IconDocument))));

		var strSpace = ((RenderOptions.HSpace > 0 || RenderOptions.VSpace > 0)?("<td><img src='" + RenderOptions.IconSpacer + "' height=" + (RenderOptions.IconDocumentHeight + RenderOptions.VSpace) + " width=" + RenderOptions.HSpace + "></td>"):(""));
		var strOnClick = new Array(((RenderOptions.ShowNode)?("<" + ((clientBrowser == 1)?("a href='#'"):("a href='#'")) + " onclick='ccNodeClick(" + this.TreeObject.ID + ", " + this.ID + ")'>"):("")), ((RenderOptions.ShowIcon && RenderOptions.ShowNode)?("</" + ((clientBrowser == 1)?("a"):("a")) + ">"):("")));
		var RenderTree = true;
		if(this == this.TreeObject.Root)
			RenderTree = false
		else
			if(!RenderOptions.ShowThread && !RenderOptions.ShowNode)
				for(var i=0;i<this.TreeObject.Root.ChildNodes.length;i++)
					if(this == this.TreeObject.Root.ChildNodes[i])
						RenderTree = false;
		if(RenderTree)
			if(isLast){
				strNode = "<td>" + strOnClick[0] + "<img name='node_" + this.TreeObject.ID + "_" + this.ClientID + "' src='" + ((RenderOptions.ShowNode)?((this.HasChildren())?(RenderOptions.IconNodeCloseEnd):((RenderOptions.ShowThread)?(RenderOptions.IconThreadEnd):(RenderOptions.IconSpacer))):((RenderOptions.ShowThread)?(RenderOptions.IconThreadEnd):(RenderOptions.IconSpacer))) + "' width=" + RenderOptions.IconTreeWidth + " height=" + RenderOptions.IconTreeHeight + " border=0>" + strOnClick[1] + "</td>";
				this.innerHtml = strSpace + strTree + strNode + ((RenderOptions.VSpace > 0)?(strSpace):(""));
				strTree += "<td><img src='" + RenderOptions.IconSpacer + "' width=" + RenderOptions.IconTreeWidth + " height=" + RenderOptions.IconTreeHeight + "></td>" + ((RenderOptions.VSpace > 0)?(strSpace):(""));
			}else{
				strNode = "<td>" + strOnClick[0] + "<img name='node_" + this.TreeObject.ID + "_" + this.ClientID + "' src='" + ((RenderOptions.ShowNode)?((this.HasChildren())?(RenderOptions.IconNodeCloseContinue):((RenderOptions.ShowThread)?(RenderOptions.IconThreadContinue):(RenderOptions.IconSpacer))):((RenderOptions.ShowThread)?(RenderOptions.IconThreadContinue):(RenderOptions.IconSpacer))) + "' width=" + RenderOptions.IconTreeWidth + " height=" + RenderOptions.IconTreeHeight + " border=0>" + strOnClick[1] + "</td>";
				this.innerHtml = strSpace + strTree + strNode + ((RenderOptions.VSpace > 0)?(strSpace):(""));
				strTree += "<td><img src='" + ((RenderOptions.ShowThread)?(RenderOptions.IconThread):(RenderOptions.IconSpacer)) + "' width=" + RenderOptions.IconTreeWidth + " height=" + RenderOptions.IconTreeHeight + "></td>" + ((RenderOptions.VSpace > 0)?(strSpace):(""));
			}
		else this.innerHtml = strSpace; //this.Render(strSpace);
	}
	if(this.HasChildren())
		for(var i=0;i<this.ChildNodes.length;i++)
			this.ChildNodes[i].Init(this, (!RenderOptions.FirstLevelFlat || (this.Parent && this.Parent.NodeObject) ? strTree : ""), ((i == this.ChildNodes.length - 1)?(true):(false)));
}

function ccNodeRender(){
	var strTree = this.innerHtml;
	if(this.NodeObject != null){
		if(this.TreeObject != null){
			this.RenderBegin = this.TreeObject.NodeRenderBegin;
			this.RenderEnd = this.TreeObject.NodeRenderEnd;
			var RenderOptions = this.TreeObject.RenderOptions;
			var strOnClick = new Array(((RenderOptions.ShowIcon)?("<" + ((clientBrowser == 1)?("a href='#'"):("a href='#'")) + " onclick='ccNodeClick(" + this.TreeObject.ID + ", " + this.ID + ")'>"):("")), ((RenderOptions.ShowIcon)?("</" + ((clientBrowser == 1)?("a"):("a")) + ">"):("")));
			var strPadding = ((RenderOptions.TitlePadding > 0)?("<td><img src='" + RenderOptions.IconSpacer + "' height=1 width=" + RenderOptions.TitlePadding + "></td>"):(""));
			var strIcon = "<td>" + strOnClick[0] + "<img id='icon_" + this.TreeObject.ID + "_" + this.ClientID + "' src='" + ((this.HasChildren())?(this.IconFolderClose):(this.IconDocument)) + "' border=0>" + strOnClick[1] + "</td>";
			
			this.RenderBegin();
			this.TreeObject.HtmlWriter.write(strTree);
			this.TreeObject.HtmlWriter.write(strIcon + strPadding);
			this.TreeObject.HtmlWriter.write("<td width='100%'" + ((RenderOptions.NoWrap)?(" NoWrap"):("")) + ((RenderOptions.TitlePaddingTop > 0)?(" style='padding-top:" + RenderOptions.TitlePaddingTop + "'"):("")) + ">")
			if(this.NodeObject.Render) this.NodeObject.Render()
			else this.RenderNodeObject();
			this.TreeObject.HtmlWriter.write("</td>")
			this.RenderEnd();
		}
	}
	if(this.HasChildren())
		for(var i=0;i<this.ChildNodes.length;i++)
			this.ChildNodes[i].Render();
}

function ccNodeObjectRender(){
	var RenderOptions = this.TreeObject.RenderOptions;
	var strOnClick = new Array("<" + ((clientBrowser == 1)?("a href='#'"):("a href='#'")) + " onclick='ccNodeObjectClick(" + this.TreeObject.ID + ", " + this.ID + ")' ", "</" + ((clientBrowser == 1)?("a"):("a")) + ">");
	this.TreeObject.HtmlWriter.write(strOnClick[0] + " class='NodeObject' id='" + this.ClientID + "_Caption'");
	if(clientBrowser == 1)
		this.TreeObject.HtmlWriter.write(" onmousemove=\"window.status=this.title;return false;\" onmouseout=\"window.status=''\"");
	if(this.NodeObject.Title != null)
		this.TreeObject.HtmlWriter.write(">" + this.NodeObject.Title)
	else
		this.TreeObject.HtmlWriter.write(">...");
	this.TreeObject.HtmlWriter.write(strOnClick[1]);
}

function ccNodeObjectConnect(){
	if(clientBrowser == 1){
		if(this.NodeObject != null){
			if(document.all[this.ClientID + "_Caption"].length)
				this.NodeObject.Caption = document.all[this.ClientID + "_Caption"][0];
			else
				this.NodeObject.Caption = document.all[this.ClientID + "_Caption"];
			this.NodeObject.Caption.title = this.NodeObject.Caption.innerText;
		}
	}
}

function ccNodeRenderBegin() {
	if(clientBrowser == 2) this.TreeObject.HtmlWriter.write("<layer id='" + this.ClientID + "' top=" + this.TreeObject.yPos + " visibility=show>");
	if(clientBrowser == 3) this.TreeObject.HtmlWriter.write("<div id='" + this.ClientID + "' style='display:block;position:block;'>");
	this.TreeObject.HtmlWriter.write("<table class='Node' border=0 cellspacing=0 cellpadding=0 width=100% ");
	if(clientBrowser == 1 || clientBrowser == 4) 
		this.TreeObject.HtmlWriter.write("id='" + this.ClientID + "' style='display:block;position:block;'><tr>")
	else
		this.TreeObject.HtmlWriter.write("><tr>");
}

function ccNodeRenderEnd() {
	this.TreeObject.HtmlWriter.write("</tr></table>");
	switch(clientBrowser){
		case 2:
			this.TreeObject.HtmlWriter.write("</layer>");
			break;
		case 3:
			this.TreeObject.HtmlWriter.write("</div>");
			break;						
	}
}

function ccNodeConnect(){
	switch(clientBrowser){
		case 1:
			this.Object = document.all[this.ClientID];
			if(this.TreeObject.RenderOptions.ShowNode && this.HasChildren()) this.ImgNode = document.all["node_" + this.TreeObject.ID + "_" + this.ClientID];
			if(this.TreeObject.RenderOptions.ShowIcon) this.ImgIcon = document.all["icon_" + this.TreeObject.ID + "_" + this.ClientID];
			break;
		case 2:
			this.Object = document.layers[this.ClientID];
			if(this.TreeObject.RenderOptions.ShowNode && this.HasChildren()) this.ImgNode = this.Object.document.images["node_" + this.TreeObject.ID + "_" + this.ClientID];
			if(this.TreeObject.RenderOptions.ShowIcon) this.ImgIcon = this.Object.document.images["icon_" + this.TreeObject.ID + "_" + this.ClientID];
			this.TreeObject.yPos = this.TreeObject.yPos + this.Object.clip.height;
			break;
		case 3:
			this.Object = document.getElementById(this.ClientID);
			if(this.TreeObject.RenderOptions.ShowNode && this.HasChildren()) this.ImgNode = document.getElementById("node_" + this.TreeObject.ID + "_" + this.ClientID);
			if(this.TreeObject.RenderOptions.ShowIcon) this.ImgIcon = document.getElementById("icon_" + this.TreeObject.ID + "_" + this.ClientID);
			break;		
		case 4:
			this.Object = document.getElementById(this.ClientID);
			if(this.TreeObject.RenderOptions.ShowNode && this.HasChildren()) this.ImgNode = document.getElementById("node_" + this.TreeObject.ID + "_" + this.ClientID);
			if(this.TreeObject.RenderOptions.ShowIcon) this.ImgIcon = document.getElementById("icon_" + this.TreeObject.ID + "_" + this.ClientID);
			break;
	}
	if(this.NodeObject != null && this.NodeObject.Connect != null) this.NodeObject.Connect()
	else this.ConnectNodeObject();
	if(this.HasChildren())
		for(var i=0;i<this.ChildNodes.length;i++)
			this.ChildNodes[i].Connect();
	if(this.State == 2)
		this.Expand()
	else if(this.State == 1 || this.Parent.State != 2)
		this.Contract();
}
 
function ccNodeRegister(){ 
	this.ID = this.TreeObject.Nodes.length;
	this.ClientID = this.TreeObject.Name + this.TreeObject.Nodes.length;
	this.TreeObject.Nodes[this.TreeObject.Nodes.length] = this;
} 
 
function ccNodeAdd(Node){ 
	var newNode = new ccNode(Node);
	newNode.TreeObject = this.TreeObject;
	newNode.Parent = this;
	if(Node != null) Node.BaseNode = newNode;
	this.ChildNodes[this.ChildNodes.length] = newNode;
	return newNode;
} 

function ccNodeClick(iTree, iNode){
	myNode = ccTrees[iTree].Nodes[iNode];
	if(myNode.HasChildren()){
		if(myNode.State == 2) myNode.Contract();
		else myNode.Expand();
	}else ccNodeObjectClick(iTree, iNode);
}

function ccNodeObjectClick(iTree, iNode){
	myTree = ccTrees[iTree];
	myNode = myTree.Nodes[iNode];
	if(myNode.HasChildren()) myNode.Expand(true);
	if(myTree.SelectedNodeIndex > -1)
		myTree.Nodes[myTree.SelectedNodeIndex].Unselect();
	myTree.SelectedNodeIndex = iNode;
	myNode.Select();
	if(myNode.NodeObject.Click != null) myNode.NodeObject.Click();
}

function ccNodeContract(){
	if(!this.HasChildren()) return;
	this.State = 1
	if(clientBrowser == 2){ 
		var totalHeight = 0 
		for(var i=0;i<this.ChildNodes.length;i++) 
			totalHeight += ((this.ChildNodes[i].State != 0)?(this.ChildNodes[i].Object.clip.height):(0));
		totalHeight = 0 - totalHeight 
		for(var i = (this.ID + this.ChildNodes.length + 1);i<this.TreeObject.Nodes.length;i++)
			this.TreeObject.Nodes[i].Object.moveBy(0, totalHeight);
	} 
	for(var i=0;i<this.ChildNodes.length;i++){
		//this.ChildNodes[i].Contract();
		this.ChildNodes[i].Hide();
	}
	var RenderOptions = this.TreeObject.RenderOptions;
	if(this.ImgNode != null)
		this.ImgNode.src = ((this.LastNode)?(RenderOptions.IconNodeCloseEnd):(RenderOptions.IconNodeCloseContinue));
	if(this.ImgIcon != null)
		this.ImgIcon.src = this.IconFolderClose;
	if((clientBrowser == 1 || clientBrowser == 4) && this.Object != null && this.HasChildren()) this.Object.className = "NodeClose";
}

function ccNodeExpand(){
	this.State = 2;
	if(clientBrowser == 2){ 
		var totalHeight = 0 
		for(var i=0;i<this.ChildNodes.length;i++) 
			totalHeight += this.ChildNodes[i].Object.clip.height;
		for(var i = (this.ID + this.ChildNodes.length + 1);i<this.TreeObject.Nodes.length;i++)
			this.TreeObject.Nodes[i].Object.moveBy(0, totalHeight);
	}
	for(var i=0;i<this.ChildNodes.length;i++)
		this.ChildNodes[i].Show();
	var RenderOptions = this.TreeObject.RenderOptions;	
	if(this.ImgNode != null) this.ImgNode.src = ((this.LastNode)?(RenderOptions.IconNodeOpenEnd):(RenderOptions.IconNodeOpenContinue));
	if(this.ImgIcon != null) this.ImgIcon.src = this.IconFolderOpen;
	if((clientBrowser == 1 || clientBrowser == 4) && this.Object != null && this.HasChildren()) this.Object.className = "NodeOpen";
}

function ccNodeHide(){
	if(this.Object == null) return false;
	
	if(this.State == 2){
		for(var i=0;i<this.ChildNodes.length;i++)
			this.ChildNodes[i].Hide()
	}else
		this.State = 0;
	if(clientBrowser == 1 || clientBrowser == 3 || clientBrowser == 4){
		if(this.Object.style.display == "none") return;
		this.Object.style.display = "none";
	}else{
		if(this.Object.visibility == "hiden") return;
		this.Object.visibility = "hiden";
	}
}

function ccNodeShow(){ 
	if(this.Object == null) return false;
	if(this.State == 2)
		this.Expand()
	else
		this.State = 1;
	if(clientBrowser == 1 || clientBrowser == 3 || clientBrowser == 4)
		this.Object.style.display = "block" 
	else
		this.Object.visibility = "show";
} 
 
function ccNodeSelect(){
	if(this.NodeObject.Caption != null) this.NodeObject.Caption.className = "NodeObjectSelected";
}

function ccNodeUnselect(){
	if(this.NodeObject.Caption != null) this.NodeObject.Caption.className = "NodeObject";
}

// Node Link...
function NodeLink(title, href, target){
	return new ccNodeLinkClass(title, href, target);
}

function ccNodeLinkClass(title, href, target){
	this.BaseNode = null;
	this.Caption = null;
	
	this.Title = title;
	this.Href = href;
	this.Target = target;
	
	this.Click = ccNodeLinkClick
}


function ccNodeLinkClick(){
	window.open(this.Href, this.Target)
}

// Node SiteBox...
function NodeSiteMaker(documentid, title, script, width){
	return new ccNodeSiteMakerClass(documentid, title, script, width);
}

function ccNodeSiteMakerClass(documentid, title, script, width){
	this.BaseNode = null;
	this.Caption = null;
	
	this.DocumentID = documentid;
	this.Title = title;
	this.Script = script;
	this.Width = width;
	
	this.Click = ccNodeSiteMakerClick
}

function ccNodeSiteMakerClick(){
	if(ua.indexOf("mac"))
		window.setTimeout(this.Script, 10);
	else
		eval(this.Script);
}

// Defined Tree Render Options...

function ccTreeRenderOptions(){
	this.NoWrap = false;
	this.ShowThread = true;
	this.ShowNode = true;
	this.ShowIcon = true;
	this.HSpace = 0;
	this.VSpace = 0;
	this.TitlePadding = 3;	
	this.TitlePaddingTop = 0;
	
	this.FirstLevelFlat = false;
	
	this.IconTreeWidth = 16;
	this.IconTreeHeight = 16;
	this.FolderWith = 16;
	this.FolderHeight = 16;
	this.DocumentWidth = 16;
	this.DocumentHeight = 16;
	
	this.IconSpacer = "Graphics/spacer.gif";
	this.IconThread = "Graphics/win9x_t.gif";
	this.IconThreadEnd = "Graphics/win9x_te.gif";
	this.IconThreadContinue = "Graphics/win9x_tc.gif";
	this.IconNodeOpenEnd = "Graphics/win9x_nb_1e.gif";
	this.IconNodeOpenContinue = "Graphics/win9x_nb_1c.gif";
	this.IconNodeCloseEnd = "Graphics/win9x_nb_0e.gif";
	this.IconNodeCloseContinue = "Graphics/win9x_nb_0c.gif";
	this.IconFolderOpen = "Graphics/win9x_f_1.gif";
	this.IconFolderClose = "Graphics/win9x_f_0.gif";
	this.IconDocument = "Graphics/win9x_d.gif";
}


function ccTreeRenderOptionsWin9x(){
	myTRO							= new ccTreeRenderOptions();
	myTRO.NoWrap					= true;
	myTRO.ShowThread				= true;
	myTRO.ShowNode					= true;
	myTRO.ShowIcon					= true;
	myTRO.HSpace					= 0;
	myTRO.VSpace					= 0;
	myTRO.TitlePadding				= 3;	
	myTRO.IconSpacer				= "Graphics/spacer.gif";
	myTRO.IconThread				= "Graphics/win9x_t.gif";
	myTRO.IconThreadEnd				= "Graphics/win9x_te.gif";
	myTRO.IconThreadContinue		= "Graphics/win9x_tc.gif";
	myTRO.IconNodeOpenEnd			= "Graphics/win9x_nb_1e.gif";
	myTRO.IconNodeOpenContinue		= "Graphics/win9x_nb_1c.gif";
	myTRO.IconNodeCloseEnd			= "Graphics/win9x_nb_0e.gif";
	myTRO.IconNodeCloseContinue		= "Graphics/win9x_nb_0c.gif";
	myTRO.IconFolderOpen			= "Graphics/win9x_f_1.gif";
	myTRO.IconFolderClose			= "Graphics/win9x_f_0.gif";
	myTRO.IconDocument				= "Graphics/win9x_d.gif";
	return myTRO;
}

function ccTreeRenderOptionsWinXP(){
	myTRO							= new ccTreeRenderOptions();
	myTRO.NoWrap					= true;
	myTRO.ShowThread				= false;
	myTRO.ShowNode					= true;
	myTRO.ShowIcon					= true;
	myTRO.HSpace					= 3;
	myTRO.VSpace					= 1;
	myTRO.TitlePadding				= 5;
	
	myTRO.IconDocumentHeight		= 16;
		
	myTRO.IconSpacer				= "Graphics/spacer.gif";
	myTRO.IconNodeOpenEnd			= "Graphics/winXP_nb_1.gif";
	myTRO.IconNodeOpenContinue		= myTRO.IconNodeOpenEnd;
	myTRO.IconNodeCloseEnd			= "Graphics/winXP_nb_0.gif";
	myTRO.IconNodeCloseContinue		= myTRO.IconNodeCloseEnd;
	myTRO.IconFolderOpen			= "Graphics/winXP_f_1.gif";
	myTRO.IconFolderClose			= "Graphics/winXP_f_0.gif";
	myTRO.IconDocument				= "Graphics/winXP_d.gif";
	return myTRO;
}

function ccTreeRenderOptionsNodes(){
	myTRO							= new ccTreeRenderOptions();
	myTRO.NoWrap					= true;
	myTRO.ShowThread				= false;
	myTRO.ShowNode					= false;
	myTRO.ShowIcon					= true;
	myTRO.HSpace					= 0;
	myTRO.VSpace					= 8;
	myTRO.TitlePadding				= 6;	
	
	myTRO.IconTreeWidth 			= 15;
	myTRO.IconTreeHeight			= 15;
	myTRO.IconFolderWith			= 11;
	myTRO.IconFolderHeight			= 11;
	myTRO.IconDocumentWidth			= 11;
	myTRO.IconDocumentHeight		= 11;
	
	myTRO.IconSpacer				= "Graphics/spacer.gif";
	myTRO.IconFolderOpen			= "Graphics/nodes_nb_1.gif";
	myTRO.IconFolderClose			= "Graphics/nodes_nb_0.gif";
	myTRO.IconDocument				= "Graphics/nodes_d.gif";
	return myTRO;
}


function ccTreeRenderOptionsCourse(){
	myTRO							= new ccTreeRenderOptions();
	myTRO.NoWrap					= true;
	myTRO.ShowThread				= false;
	myTRO.ShowNode					= false;
	myTRO.ShowIcon					= true;
	myTRO.HSpace					= 3;
	myTRO.VSpace					= 1;
	myTRO.TitlePadding				= 3;
	
	myTRO.IconTreeWidth 			= 10;
	myTRO.IconDocumentHeight		= 16;
		
	myTRO.IconSpacer				= "Graphics/spacer.gif";
	myTRO.IconFolderOpen			= "Graphics/course_f_1.gif";
	myTRO.IconFolderClose			= "Graphics/course_f_0.gif";
	myTRO.IconDocument				= "Graphics/course_d.gif";
	return myTRO;
}

function ccTreeRenderOptionsCourseXP(){
	myTRO							= new ccTreeRenderOptions();
	myTRO.NoWrap					= false;
	myTRO.ShowThread				= false;
	myTRO.ShowNode					= false;
	myTRO.ShowIcon					= true;
	myTRO.HSpace					= 3;
	myTRO.VSpace					= 1;
	myTRO.TitlePadding				= 3;
	
	myTRO.IconTreeWidth 			= 2;
	myTRO.IconFolderWith			= 22;
	myTRO.IconFolderHeight			= 17;

	myTRO.IconSpacer				= "Graphics/spacer.gif";
	myTRO.IconFolderOpen			= "Graphics/coursexp_f_1.gif";
	myTRO.IconFolderClose			= "Graphics/coursexp_f_0.gif";
	myTRO.IconDocument				= "Graphics/coursexp_d.gif";
	return myTRO;
}