<!----------------------------------------------------------------------
//  Copyright (c) 2000-2003 Microsoft Corporation.  All Rights Reserved.
//---------------------------------------------------------------------->

<public:component tagname=treeview literalcontent=true>
    <public:attach event=oncontentready onevent="oncontentready()" />
    <public:attach event=ondocumentready onevent="ondocumentready()" />
    <public:attach event="onscroll" onevent="onScroll()" />
    <public:event name="onexpand" id="_tvevtExpand" />
    <public:event name="oncollapse" id="_tvevtCollapse" />
    <public:event name="onselectedindexchange" id="_tvevtSelect" />
    <public:event name="oncheck" id="_tvevtCheck" />
    <public:event name="onfirequeuedevents" id="_tvevtFireQueuedEvents" />
    <public:event name="onnodebound" id="_tvevtNodeBound" />
    <public:event name="onnodetypesbound" id="_tvevtNodeTypesBound" />
    <public:event name="onhover" id="_tvevtHover" />
    <public:event name="onunhover" id="_tvevtUnhover" />
    <public:property name="clickedNodeIndex" GET="getClickedNodeIndex" />
    <public:property name="defaultStyle" id="_tvpropDefaultStyle" GET="getDefaultStyle" PUT="setDefaultStyle" />
    <public:property name="hoverStyle" id="_tvpropHoverStyle" GET="getHoverStyle" PUT="setHoverStyle" />
    <public:property name="selectedStyle" id="_tvpropSelectedStyle" GET="getSelectedStyle" PUT="setSelectedStyle" />
    <public:property name="childType" id="_tvpropChildType" GET="getChildType" PUT="setChildType" />
    <public:property name="imageUrl" id="_tvpropImageUrl" GET="getImageUrl" PUT="setImageUrl" />
    <public:property name="expandedImageUrl" id="_tvpropExpandedImageUrl" GET="getExpandedImageUrl" PUT="setExpandedImageUrl" />
    <public:property name="selectedImageUrl" id="_tvpropSelectedImageUrl" GET="getSelectedImageUrl" PUT="setSelectedImageUrl" />
    <public:property name="target" id="_tvpropTarget" GET="getTarget" PUT="setTarget" />
    <public:property name="treeNodeSrc" id="_tvpropTreeNodeSrc" GET="getTreeNodeSrc" PUT="setTreeNodeSrc" />
    <public:property name="treeNodeXsltSrc" id="_tvpropTreeNodeXsltSrc" GET="getTreeNodeXsltSrc" PUT="setTreeNodeXsltSrc" />
    <public:property name="selectExpands" id="_tvpropSelectExpands" GET="getSelectExpands" PUT="setSelectExpands" />
    <public:property name="expandLevel" id="_tvpropExpandLevel" GET="getExpandLevel" PUT="setExpandLevel" />
    <public:property name="autoSelect" id="_tvpropAutoSelect" GET="getAutoSelect" PUT="setAutoSelect" />
    <public:property name="treeNodeTypeSrc" id="_tvpropTreeNodeTypeSrc" GET="getTreeNodeTypeSrc" PUT="setTreeNodeTypeSrc" />
    <public:property name="showLines" id="_tvpropShowLines" GET="getShowLines" PUT="setShowLines" />
    <public:property name="showPlus" id="_tvpropShowPlus" GET="getShowPlus" PUT="setShowPlus" />
    <public:property name="showToolTip" id="_tvpropShowToolTip" GET="getShowToolTip" PUT="setShowToolTip" />
    <public:property name="indent" id="_tvpropIndent" GET="getIndent" PUT="setIndent" />
    <public:property name="selectedNodeIndex" id="_tvpropSelectedNodeIndex" GET="getSelectedNodeIndex" PUT="setSelectedNodeIndex" />
    <public:property name="systemImagesPath" id="_tvpropSystemImagesPath" GET="getSystemImagesPath" PUT="setSystemImagesPath" />
    <public:method name="queueEvent" />
    <public:method name="getTreeNode" />
    <public:method name="addAt" />
    <public:method name="createTreeNode" />
    <public:method name="getTreeNodeType" />
    <public:method name="createTreeNodeType" />
    <public:method name="addTreeNodeType" />
    <public:method name="add" />
    <public:method name="databind" />
    <public:method name="databindTypes" />
    <public:method name="getChildren" />
    
</public:component>

<script language=javascript>

var contentNode;
var treeviewNode;
var g_typesNode;
var g_styles;
var g_event;
var g_timer = -1;
var g_nodeClicked = null;
var g_strQueuedEvents = "";
var g_bInteractive = false;
var g_numStop = 0;
var g_selectedNodeBeforeDelay = "";
var g_bFocus = false;
var g_bCreated = false;
var g_typeIsland = null;
var g_bNodesReady = false;
var g_bTypesReady = false;
var g_bMouseDown = false;
var g_pendingBinds = new Array(0);
var g_pendingSyncBinds = new Array(0);
var g_bindTimer = -1;
var g_bLock = false;
var g_bInTypesBoundEvent = false;
var L_strMSXMLError_Text = "Error creating MSXML object.  Please make sure the MSXML library is installed on your computer.";
var L_strRetrievingNodes_Text = "Retrieving nodes...";
var L_strXMLError_Text = "Error loading XML file %s";
var L_strInvalidXML_Text = "Invalid XML in %s";
var L_strXSLTError_Text = " or unsupported XSLT in %s";
var L_fontSize_Text = "10pt";
var L_fontName_Text = "Times";
var L_strToolTip_Text = "Use +/- to expand/collapse";

// properties
var prop_defaultStyle = null;
var prop_hoverStyle = null;
var prop_selectedStyle = null;
var prop_childType = null;
var prop_imageUrl = null;
var prop_expandedImageUrl = null;
var prop_selectedImageUrl = null;
var prop_target = null;
var prop_treeNodeSrc = null;
var prop_treeNodeXsltSrc = null;
var prop_selectExpands = null;
var prop_expandLevel = -1;
var prop_autoSelect = false;
var prop_treeNodeTypeSrc = null;
var prop_showLines = true;
var prop_showPlus = true;
var prop_showToolTip = true;
var prop_indent = 19;
var prop_selectedNodeIndex = null;
var prop_systemImagesPath = null;

//
// QueueEvent()
//
// Queue an event for later posting to the server, when the
// _tvevtFireQueuedEvents event fires.
//
function queueEvent(strEvent, strParams)
{
    if (g_strQueuedEvents.length > 0)
        g_strQueuedEvents += ";";
    g_strQueuedEvents += (strEvent + "," + strParams);
    setHiddenHelperValue();
}

function getQueuedEvents()
{
    return g_strQueuedEvents;
}

function fireQueuedEvents()
{
    if (g_strQueuedEvents != "")
    {
        if (getAttribute("onfirequeuedevents") != null)
        {
            if (g_timer != -1)
            {
                // force pending autoSelect to trigger
                window.clearTimeout(g_timer);
                autoSelect();
            }
            else
            {
                g_bInteractive = false;
                g_numStop = 0;
                _tvevtFireQueuedEvents.fire();
            }
        }
    }
}

//
// SetAnchorClass()
//
// Set the cssText property in addition to the className, since just setting className
// doesn't do the trick.  
//
// node: Anchor to which we're applying a new class
// name: the class to apply
//       DefaultStyle: Apply DefaultStyle
//       HoverStyle: Apply DefaultStyle, then HoverStyle
//       SelectedStyle: Apply DefaultStyle, then SelectedStyle
//

function SetAnchorClass(node, name)
{
    var strStyle = "";
    var lname = name.toLowerCase();
    
    // Everything is based on DefaultStyle
    strStyle += cascadeStyle(getParentTreeNode(node), "defaultstyle");

    if (lname != "defaultstyle")
    {
        var str = cascadeStyle(getParentTreeNode(node), lname);
        if (str != null)
        {
            strStyle += ";" + str;
        }        
    }
    node.style.cssText = strStyle;
    if (lname == "hoverstyle" && g_bFocus == false)
        blurFilter(node);
                
    node.className = lname;
}

//
// getParentTreeNode()
//
// Walk up the display tree (NOT the TREENODE tree) until we find an element with
// a treenode expando.
//
function getParentTreeNode(node)
{
    var el = node;
    while (el != null && el.getAttribute("treenode") == null)
        el = el.parentElement;
    return el.getAttribute("treenode");
}

//
// HoverNode()
//
// Apply hover effect to given text node
//
// textnode: textnode (id: _tntext) to apply hover to, or treenode
//
function HoverNode(textnode)
{
    var node;
    
    if (textnode.tagName.toLowerCase() == "treenode")
        node = textnode.subtree.all.item("_tntext", 0);
    else
        node = textnode;

    var nodeIndex = getNodeIndex(getParentTreeNode(node));

    if (node.className == "defaultstyle")
    {
        SetAnchorClass(node, "hoverstyle");
        HoverNodeIndex = nodeIndex;
    }
    else if (node.className != "hoverstyle")
        HoverNodeIndex = "";
    e = element.document.createEventObject();
    e.treeNodeIndex = nodeIndex;
    _tvevtHover.fire(e);
    setHiddenHelperValue();
}

//
// UnhoverNode()
//
// Remove hover effect from given text node
//
// textnode: textnode (id: _tntext) to remove hover from, or treenode
//
function UnhoverNode(textnode)
{
    if (textnode != null)
    {
        var node;
        if (textnode.tagName.toLowerCase() == "treenode")
            node = textnode.subtree.all.item("_tntext", 0);
        else
            node = textnode;
            
        if (node.className == "hoverstyle")
        {
            SetAnchorClass(node, "defaultstyle");
        }
        e = element.document.createEventObject(event);
        if (HoverNodeIndex == "")
            e.treeNodeIndex = getNodeIndex(getParentTreeNode(node))
        else
            e.treeNodeIndex = HoverNodeIndex;
        _tvevtUnhover.fire(e);
        HoverNodeIndex = "";
        setHiddenHelperValue();
    }
}
    
// mOver()
//
// onmouseover handler for the anchor of a treenode
//
function mOver()
{
    if (g_bInteractive == true)
    {
        var oItem = this.all.item("_tntext", 0);
        if (HoverNodeIndex.length > 0)
            UnhoverNode(getNodeFromIndex(HoverNodeIndex));
        HoverNode(oItem);
    }
}

//
// mOut()
//
// onmouseout handler for the anchor of a treenode
//
function mOut()
{
    if (g_bInteractive == true)
    {
        var node = this.parentElement.treenode;
        var nodeIndex = getNodeIndex(node)
        if (nodeIndex == HoverNodeIndex)
        {
            UnhoverNode(node);
            window.status = window.defaultStatus;
        }
        else if (nodeIndex == selectedNodeIndex)
        {
            e = element.document.createEventObject(event);
            e.treeNodeIndex = nodeIndex;
            _tvevtUnhover.fire(e);
        }        
    }
}

//
// onkeydown
//
function onkeydown()
{
    if (!g_bInteractive)
        return;
    
    if (event.altKey == true)
        return;
            
    var oldNode;
    var hoverNode = null;
    if (HoverNodeIndex.length > 0)
    {
        oldNode = getNodeFromIndex(HoverNodeIndex);
        hoverNode = oldNode;
    }
    else
        oldNode = getNodeFromIndex(selectedNodeIndex);
    switch (event.keyCode)
    {
        case 187:   // keyboard +/=
            if (event.shiftKey != true)
                break;
            // else fall through
        case 107:   // keypad +
            if (oldNode.getAttribute("expanded") != true)
            {
                doNodePlusMinusClick(oldNode);
                fireQueuedEvents();
            }
            event.returnValue = false;    
            break;
        case 189:   // keyboard -/_
            if (event.shiftKey == true)
                break;
            // else fall through
        case 109:   // keypad -
            if (oldNode.getAttribute("expanded") == true)
            {
                doNodePlusMinusClick(oldNode);
                fireQueuedEvents();
            }
            event.returnValue = false;
            break;   
        case 39:    // right arrow
            event.returnValue = false;
            if (oldNode.children.tags("treenode").length == 0)
            {
                var exp = getNodeAttribute(oldNode, "expandable");
                if (exp == null && oldNode.getAttribute("TreeNodeSrc") != null)
                    exp = "checkOnce";
                if (oldNode.getAttribute("expanded") == true || !(exp == "always" || (exp == "checkOnce" && oldNode.getAttribute("checkedExpandable") != true)))
                    break;
            }
            if (oldNode.getAttribute("expanded") != true)
            {
                doNodePlusMinusClick(oldNode);
                updateStatus(oldNode);
                fireQueuedEvents();
                break;
            }
            // fall through
        case 40:    // down arrow
            var node = getNextVisibleNode(oldNode);
            if (node != null)
            {
                if (element.getAttribute("autoselect") == true)
                {
                    selectNode(node, true);
                    updateStatus(node);
                    UnhoverNode(hoverNode);
                }
                else
                {                    
                    UnhoverNode(oldNode);
                    HoverNode(node);
                    changeFocus(node, oldNode);                    
                    updateStatus(node);
                }
                scrollTree(node);
            }
            event.returnValue = false;
            break;
        case 37:    // left arrow
            if (oldNode.getAttribute("expanded") == true)
            {
                doNodePlusMinusClick(oldNode);
                fireQueuedEvents();
            }
            else
            {
                // jump the hover up to the parent node
                var node = oldNode.parentElement;
                while (node.tagName.substr(0,4).toLowerCase() != "tree")
                    node = node.parentElement;
                if (node.tagName.toLowerCase() == "treenode")
                {
                    if (element.getAttribute("autoselect") == true)
                    {
                        selectNode(node, true);
                        updateStatus(node);
                        UnhoverNode(hoverNode);
                    }
                    else
                    {
                        UnhoverNode(oldNode);
                        HoverNode(node);
                        changeFocus(node, oldNode);
                        updateStatus(node);
                    }
                    scrollTree(node);
                }
            }
            event.returnValue = false;
            break;
        case 38:    // up arrow
            var node = getPreviousVisibleNode(oldNode);
            if (node != null)
            {
                if (element.getAttribute("autoselect") == true)
                {
                    selectNode(node, true);
                    updateStatus(node);
                    UnhoverNode(hoverNode);
                }
                else
                {
                    UnhoverNode(oldNode);
                    HoverNode(node);
                    changeFocus(node, oldNode);
                    updateStatus(node);
                }
                scrollTree(node);
            }
            event.returnValue = false;
            break;
        case 32:    // spacebar
            var cb = oldNode.subtree.all.item("_cb", 0);
            if (cb != null)
            {
                cb.setAttribute("checked", !cb.getAttribute("checked"), 0);
                doCheckboxClick(oldNode);
                fireQueuedEvents();
            }
            event.returnValue = false;
            break;
        case 13:    // enter key
            doNodeClick(oldNode)
            if (!navigateNode(oldNode))
            {
                if (element.getAttribute("selectExpands") == true)
                    doNodePlusMinusClick(oldNode);
                fireQueuedEvents();
            }
            event.returnValue = false;
            break;
    }
}

//
// changeFocus()
//
function changeFocus(node, oldNode)
{
    var accessnode = node.subtree.all.item("_tnaccess", 0);
    accessnode.tabindex = 1;
    accessnode.focus();
    accessnode = oldNode.subtree.all.item("_tnaccess", 0);
    accessnode.tabindex = -1;
}

//
// updateStatus()
//
function updateStatus(node)
{
    var href = node.getAttribute("navigateurl");
    if (href != null)
        window.status = href;
    else
        window.status = window.defaultStatus;
}

//
// onstop
//
function onstop()
{
    g_numStop++;
    if (g_numStop >= 2)
    {
        g_bInteractive = true;
    }

    for (var i = 0; i < g_pendingBinds.length; i++)
    {
        if (g_pendingBinds[i] != null && g_pendingBinds[i].el != null)
            g_pendingBinds[i].el._bound = null;
    }
}

//
// onfocus
//
function onfocus()
{
    if (!g_bFocus)
    {
        dofocus();
    }
}

//
// dofocus
//
function dofocus()
{
    var node = null;
    g_bFocus = true;  // sometimes we just call dofocus() without going through onfocus()
    try
    {
        node = getNodeFromIndex(selectedNodeIndex);
    }
    catch (e)
    {
    }
    if (node != null)
    {
        var oItem = node.subtree.all.item("_tnaccess", 0);
        if (oItem != null)
        {
            if (g_bInteractive)
            {
                focusFilter(oItem);
                oItem.tabIndex = 1;
                if (!g_bMouseDown) // don't scroll the window when selecting a new node
                {
                    try
                    {
                        var prevScrollTop = element.scrollTop;
                        var prevScrollLeft = element.scrollLeft;

                        oItem.focus();

                        element.scrollTop = prevScrollTop;
                        element.scrollLeft = prevScrollLeft;
                    }
                    catch (e)
                    {
                    }
                }
            }
        }
    }

    node = null;
    try
    {
        node = getNodeFromIndex(HoverNodeIndex);
    }
    catch (e)
    {
    }

    if (node != null && g_bInteractive)
    {
        var oItem = node.subtree.all.item("_tnaccess", 0);
        if (oItem != null)
            focusFilter(oItem);
    }
}

//
// focusFilter
//
function focusFilter(oItem)
{
    if (oItem.id == "_tnaccess")
        oItem = oItem.all.item("_tntext", 0); 
    if (oItem.filters.length > 0)
    {
        var oFilter = oItem.filters.item("DXImageTransform.Microsoft.Alpha");
        if (oFilter)
        {
            oFilter.opacity *= 2;
        }
    }
}

//
// onblur
//
function onblur()
{
    var node = null;
    g_bFocus = false;
    try
    {
        node = getNodeFromIndex(selectedNodeIndex);
    }
    catch (e)
    {
    }

    if (node != null)
    {
        var oItem = node.subtree.all.item("_tnaccess", 0);
        if (oItem != null)
        {
            blurFilter(oItem);
            oItem.tabIndex = -1;
        }
    }

    node = null;
    try
    {
        node = getNodeFromIndex(HoverNodeIndex);
    }
    catch (e)
    {
    }
    if (node != null)
    {
        var oItem = node.subtree.all.item("_tnaccess", 0);
        if (oItem != null)
        {
            blurFilter(oItem);
            oItem.tabIndex = -1;
        }
    }    
    setHiddenHelperValue();
}

//
// blurFilter
//
// decreases alpha filter opacity on given node by 50%, adding one if needed
//
function blurFilter(oItem)
{
    if (oItem.id == "_tnaccess")
        oItem = oItem.all.item("_tntext", 0); 
    if (oItem.filters.length > 0)
    {
        var oFilter = oItem.filters.item("DXImageTransform.Microsoft.Alpha");
        if (oFilter)
        {
            oFilter.opacity /= 2;
            return;
        }
    }
    oItem.style.filter += "progid:DXImageTransform.Microsoft.Alpha(opacity=50,style=0)";
}

//
// oncontentready
//
// oncontentready handler for the TREEVIEW element.  Initializes the tree.
//
function oncontentready()
{
    if (element.document.parentWindow.name.indexOf("__hifSmartNav") == 0)
        return; // don't run script in SmartNav's IFrame
 
    g_styles = new Object();
    var strFont = "font: " + L_fontSize_Text + " " + L_fontName_Text + "; ";
    g_styles["parent"] = strFont + "text-decoration: none; color: black; overflow:hidden;";
    g_styles["child"] = strFont + "overflow:hidden;";
    g_styles["defaultstyle"] = strFont + "display:inline-block; color: black; text-decoration:none; cursor: hand; overflow:hidden;";
    g_styles["hoverstyle"] = "color: highlighttext; background-color:highlight; filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50,style=0);";
    g_styles["selectedstyle"] = "color: highlighttext; background-color:highlight;";
    g_styles["icon"] = "cursor:hand;";
    
    if (element.style.overflowX == "");
        element.style.overflowX = "auto";
    
    //
    // Set treeview attributes to boolean
    //
    verifyBooleanAttribute(element, "showPlus");
    if (element.getAttribute("showPlus") == false && element.getAttribute("selectExpands") == null)
        element.setAttribute("selectExpands", true, 0);
    verifyBooleanAttribute(element, "selectExpands");
    verifyBooleanAttribute(element, "autoSelect");
    verifyBooleanAttribute(element, "showLines");
    verifyBooleanAttribute(element, "showToolTip");
    
    var systemImagesPath = element.getAttribute("SystemImagesPath");
    if (systemImagesPath == null)
        element.setAttribute("SystemImagesPath", "treeimages/", 0);
    else if (systemImagesPath.charAt(systemImagesPath.length - 1) != '/')
        element.setAttribute("SystemImagesPath", systemImagesPath + '/', 0);
    if (isRtl())
    {
        element.setAttribute("SystemImagesPath", element.getAttribute("SystemImagesPath") + "rtl/", 0);
    }
    
    // Create div for parsing content
    contentNode = element.document.createElement("treeview");
    contentNode.innerHTML = element.innerHTML;
    
    element.tabIndex=0;
    element.attachEvent("onkeydown", onkeydown);
    element.attachEvent("onfocus", onfocus);
    element.attachEvent("onblur", onblur);
    f_AddStopEvent();
    element.hideFocus = true;

    if (element.getAttribute("selectedNodeIndex") == null)
        prop_selectedNodeIndex = "";

    if (element.getAttribute("HoverNodeIndex") == null)
        element.setAttribute("HoverNodeIndex", "", 0);
           
    // Create nodeTypes collection on the element
    if (element.getAttribute("TreeNodeTypeSrc") == null)
    {
        element.nodeTypes = contentNode.children.tags("TREENODETYPE");
        verifyTypeValues();
        g_bTypesReady = true;
    }
    else
        databindTypes();

    if (treeNodeSrc != null)
    {
        if (element.nodeTypes != null)
        {
            contentNode.innerHTML = getNodeTypeHtml();
            element.nodeTypes = contentNode.children.tags("TREENODETYPE");
        }
        else
            contentNode.innerHTML = "";
        databindNode(element);
    }
    else
    {
        g_bNodesReady = true;
        tryToBuildTreeFromRoot();
    }
}

//
// ondocumentready()
//
function ondocumentready()
{
    if (element.document.parentWindow.name.indexOf("__hifSmartNav") == 0)
        return; // don't run script in SmartNav's IFrame

    f_CleanupEvents();

    g_strQueuedEvents = "";

    if (HoverNodeIndex.length > 0)
        HoverNode(getNodeFromIndex(HoverNodeIndex));

    g_bInteractive = true;

    if (element.getAttribute("Focused") != null)
        dofocus();
    else
        onblur();

    var newScrollTop = element.getAttribute("__scrollTop");
    var newScrollLeft = element.getAttribute("__scrollLeft");
    if (newScrollTop != null)
        element.scrollTop = newScrollTop;
    if (newScrollLeft != null)
        element.scrollLeft = newScrollLeft;

    var parent = element.offsetParent;
    if (parent != null)
    {
        var newParentTop = element.getAttribute("__parentTop");
        var newParentLeft = element.getAttribute("__parentLeft");
        if (newParentTop != null)
            parent.scrollTop = newParentTop;
        if (newParentLeft != null)
            parent.scrollLeft = newParentLeft;
    }
    
    // verify selectedNodeIndex
    if (getNodeFromIndex(selectedNodeIndex) == null)
    {
        if (getNodeFromIndex("0") != null)
            selectedNodeIndex = "0";
        else
            selectedNodeIndex = "";
    }    
}

//
// changeIcon(node, imageUrl)
//
// Change the icon to the given Url.  If the Url isn't found, don't change anything.  The exception
// is if we try to set the icon to an unspecified ExpandedImageUrl, we instead show the ImageUrl.
//

function changeIcon(node, imageUrl)
{
    var icon1;
    var imageUrlLC = imageUrl.toLowerCase();
    var textnode = node.subtree.all("_tntext", 0);
    var accessnode = node.subtree.all("_tnaccess", 0);
    var spacer = accessnode.previousSibling;
    if (spacer != null)
    {   
        icon1 = spacer.previousSibling;
        if (icon1 != null && icon1.id != "_nodeicon")   
            icon1 = null; 
    }
    else
        icon1 = null;
    var newSrc = getNodeAttribute(node, imageUrlLC);
    
    if (newSrc != null && icon1 == null)
    {
        // node's ImageUrl attribute was not defined, so there is no icon.  Make one.
        icon1 = node.document.createElement("<IMG align='absmiddle' border='0' class='icon' id='_nodeicon' >");
        icon1.src = newSrc;
        accessnode.parentElement.insertBefore(icon1, accessnode);
        // don't forget the spacer
        spacer = node.document.createElement("<SPAN>");
        spacer.style.width = 5;
        accessnode.parentElement.insertBefore(spacer, accessnode);        
    }
    else if (newSrc != null)
    {
        icon1.src = newSrc;
        icon1.style.display = "inline";
    }
    else if (imageUrlLC == "imageurl")
    {
        if (icon1 != null)
        {
            // If the node's ImageUrl isn't defined, we don't want to leave a selected or expanded icon showing.  Hide it.
            icon1.style.display = "none";
        }
    }
    else if (imageUrlLC == "selectedimageurl" && node.getAttribute("expanded") == true)
        changeIcon(node, "expandedimageurl");
    else 
        changeIcon(node, "imageurl");
    if (icon1 != null)
    {
        icon1.style.cursor = textnode.style.cursor;
        spacer.style.cursor = textnode.style.cursor;
    }
}   

//
// selectNode(node)
//
// Make node the selected node, unselecting the previously selected node.
//
// node: node to select
// delay: TRUE to delay event firing (used on keyboard nav with autoselect=true)
//
function selectNode(node, delay)
{
    var nodeIndex;
    var selectedNode = null;
    var strImage;
    var oItem;
    var oOldItem = null;

    if (node && node.subtree == null)
        node = getNodeFromIndex("0"); // can't select a node that hasn't been built; select root instead      
        
    nodeIndex = getNodeIndex(node);
    if (selectedNodeIndex != nodeIndex)
    {
        if (selectedNodeIndex != "" && selectedNodeIndex != null)
        {
            // unselect previous item
            selectedNode = getNodeFromIndex(selectedNodeIndex);
            if (selectedNode != null && selectedNode.subtree != null)
            {
                oOldItem = selectedNode.subtree.all.item("_tntext", 0);
                SetAnchorClass(oOldItem, "defaultstyle");
                oOldItem.parentElement.tabIndex = -1;
                // restore old icon
                if (selectedNode.getAttribute("expanded") == true)
                    strImage = "ExpandedImageUrl";
                else
                    strImage = "ImageUrl";
                changeIcon(selectedNode, strImage);
            }
        }

        if (node)
        {
            oItem = node.subtree.all.item("_tntext", 0);
            applySelection(node, oItem);
        }
                
        if (selectedNodeIndex.length > 0)
        {
            // Fire event
            g_event = createEventObject();
            g_event.newTreeNodeIndex = nodeIndex;
            g_event.oldTreeNodeIndex = selectedNodeIndex;
            prop_selectedNodeIndex = nodeIndex;
            if (delay != true)
                _tvevtSelect.fire(g_event);
            else
            {
                if (g_timer != -1)
                    window.clearTimeout(g_timer);
                g_timer = window.setTimeout(autoSelect, 500, "JScript");
                if (g_selectedNodeBeforeDelay == "")
                    g_selectedNodeBeforeDelay = g_event.oldTreeNodeIndex;
            }
        }
        else
            prop_selectedNodeIndex = nodeIndex;

        // Because we use a timeout to set focus, between a nodeclick and changing the selected node
        // a user's event, which could have an alert, can occur.  An alert blurs the tree, which
        // leaves the old selected node with a 50% filter.  So if we're blurred when we unselect the
        // old node, call focusFilter to it to correct the problem.  
        if (!g_bFocus && g_bInteractive)
        {
            if (oOldItem != null)
                focusFilter(oOldItem);
        }     
    }
    setHiddenHelperValue();  // here instead of inside the main IF to preserve focus change
}

function autoSelect()
{
    g_timer = -1;
    if (selectedNodeIndex != g_selectedNodeBeforeDelay)
    {
        navigateNode(getNodeFromIndex(g_event.newTreeNodeIndex));
        _tvevtSelect.fire(g_event);
        fireQueuedEvents();
    }
    g_selectedNodeBeforeDelay = "";
}

//
// applySelection()
//
function applySelection(node, oItem)
{
    SetAnchorClass(oItem, "SelectedStyle");
    
    // set new icon
    changeIcon(node, "SelectedImageUrl");

    scrollTree(node);
    
    if (selectedNodeIndex.length > 0)
    {
        if (g_bFocus)
            changeFocus(node, getNodeFromIndex(selectedNodeIndex));
    }
    
    //  We need to blur node if we re-selected it while blurred (which can happen when using client OM)
    if (!g_bFocus && g_bInteractive)
    {
        blurFilter(oItem);
    }
}

//
// reselectNode()
//
function reselectNode(el)
{
    if (selectedNodeIndex == getNodeIndex(el))
        applySelection(el, el.subtree.all.item("_tntext", 0));
}

//
// tryToBuildTreeFromRoot()
//
function tryToBuildTreeFromRoot()
{
    if (g_bNodesReady == true && g_bTypesReady == true)
    {
        var bRebuilding = g_bCreated;
        
        buildTreeFromRoot();

        if (selectedNodeIndex.length == 0)
        {
            prop_selectedNodeIndex = "0";
        }
        var node = getNodeFromIndex(selectedNodeIndex);
        prop_selectedNodeIndex = "";
        selectNode(node);
    }
}

//
// buildTreeFromRoot()
//
function buildTreeFromRoot()
{
    // Create TREEVIEW surrogate div, to encapsulate all other DIVs.
    treeviewNode = element.document.createElement("HTML");
    var bodyNode = element.document.createElement("BODY");
    bodyNode.dir = element.getAttribute("dir");
    bodyNode.style.direction = element.currentStyle.direction;        
    
    var head = element.document.createElement("HEAD");
    var base = element.document.createElement("BASE");
    var path = null;
    if (window.location.pathname != null)
    {
        var lastslash = window.location.pathname.lastIndexOf("/");
        if (lastslash != -1)
            path = window.location.pathname.substr(0, lastslash + 1);
        else
            path = window.location.pathname;
    }
    var protocol = window.location.protocol.toLowerCase();
    base.href = window.location.protocol + (protocol != "mailto:" && protocol != "news:" ? "//" : "") + window.location.host + path;
    head.appendChild(base);
    treeviewNode.appendChild(head);
    
    var kids = contentNode.children.tags("treenode");
    if (kids[0] != undefined)
    {
        for (var i = 0; i < kids.length; i++)
        {
            kids[i].sibIndex = i;
            var subtree = buildTree(kids[i], 0);
            bodyNode.appendChild(subtree);
        }
    }
    treeviewNode.appendChild(bodyNode);
    
    // Create viewlink.
    treeviewNode.style.display = "block";
    treeviewNode.subtree = bodyNode;
    defaults.viewLink = treeviewNode.document;
    setHiddenHelperValue();

    g_bCreated = true;
}       

//
// buildTree()
//
// Recursively traverses the
// parsed TREEVIEW tree and creates the document tree of nested
// DIVs for the viewlink.
//
// root: Root node of the subtree to build
// level: level of the tree
//
// returns: created subtree
//
function buildTree(root, level)
{  
    var display = true;
    if (root.subtree != null && root.subtree.style.display == "none")
        display = false;
        
    root.detachEvent("onclick", DefaultNodeOnClick);
    root.attachEvent("onclick", DefaultNodeOnClick);
    
    // clear all cached values for this node
    root.inheritedType = undefined;
    root.nodetypeIndex = undefined;

    // process expandLevel
    var exp = makeBoolean(root.getAttribute("expanded"));
    if (exp == null)
    {
        if (level < element.getAttribute("ExpandLevel"))
        {
            root.setAttribute("expanded", true, 0);
            exp = true;
        }
        else
            exp = false;
    }
    
    //
    // convert string values to boolean
    //
    if (!verifyBooleanAttribute(root, "expanded"))
        root.setAttribute("expanded", false, 0);
    if (!verifyBooleanAttribute(root, "checked"))
        root.setAttribute("checked", false);
    verifyBooleanAttribute(root, "checkBox");
    verifyBooleanAttribute(root, "checkedExpandable");
             
    if (root.getAttribute("type") != null)
        root.setAttribute("type", root.getAttribute("type").toLowerCase(), 0);
    if (root.getAttribute("childType") != null)
        root.setAttribute("childType", root.getAttribute("childType").toLowerCase(), 0);
        
    // Create this node first
    var collChildren = root.children.tags("treenode");
    var iChildren = collChildren.length;
    var expandable = getNodeAttribute(root, "expandable");
    if (expandable == null && root.getAttribute("TreeNodeSrc") != null)
        expandable = "checkOnce";
    if (root.getAttribute("_bound") != "binding")
    {
        var subtree = generateItem(root, iChildren > 0 || (expandable == "always" || (expandable == "checkOnce" && root.getAttribute("checkedExpandable") != true)) ? "parent" : "child");
        if (display == false)
            subtree.style.display = "none";
            
        if (exp == true && root.getAttribute("TreeNodeSrc") != null && root.getAttribute("_bound") != "complete")
        {
            // Databind.  When databinding is finished, this subtree will be built automatically
            root.setAttribute("expanded", true, 0);
            saveSubtree(root, subtree);
            databindNode(root);
        }
        else
        {
            // Create children
            if (root.getAttribute("expanded") == true)
            {
                for (var i = 0; i < iChildren; i++)
                {
                    collChildren[i].sibIndex = i;
                    var sub2 = buildTree(collChildren[i], level + 1);
                    if (sub2 != undefined)
                        subtree.appendChild(sub2);
                }
            }
            else
            {
                for (var i = 0; i < iChildren; i++)
                {
                    if (collChildren[i].getAttribute("subtree") != null)
                        collChildren[i].subtree = null;
                }
            }
            saveSubtree(root, subtree);
        }
    }
    
    return root.subtree;
}

//
// saveSubtree(el, subtree)
//
function saveSubtree(el, subtree)
{
    if (el.getAttribute("subtree") == null)
        el.subtree = subtree;
    else {
        el.subtree.replaceNode(subtree);
        el.subtree = subtree;
    }
}
     
//
// calcJunction(el)
//
// Determine if this node is at an L, T, or top root (R) junction.
//
function calcJunction(el)
{
    var elParent = el.parentElement;
    var collChildren = elParent.children.tags("treenode");
    
    if (elParent.tagName == "treeview"  && collChildren[0] == el)
    {
        if (collChildren.length > 1)
            return ('F');
        else
            return ('R');
    }
    else
    {
        if (collChildren[collChildren.length - 1] == el)
        {
            return ('L');
        }
        else
        {
            return ('T');
        }
    }
}

//
// generateItem(el, nodeclass)
//
// Creates the DOM object tree for a TREEVIEW item.
//
// el: TREENODE element for which the tree is generated
// nodeclass: "parent" or "child" (leaf)
//
function generateItem(el, nodeClass)
{
    var image;
    var plusminusNode;
    var elAnchor;
    
    var expImgUrl = getNodeAttribute(el, "ExpandedImageUrl");
    var imgUrl = getNodeAttribute(el, "ImageUrl");
    var node = el.document.createElement("DIV");
    var cJunction;
    var junctionNode;
    var str;
    
    node.className = nodeClass;
    node.treenode = el;
    node.noWrap = true; 
    node.style.display = "block";
    
    if (nodeClass == "child" && el.getAttribute("expanded") == true)
        el.setAttribute("expanded", false, 0);
        
    // Determine L, T, or root junction
    cJunction = calcJunction(el);
    junctionNode = generateJunctionNode(el, cJunction, nodeClass);          
    node.appendChild(junctionNode);
    
    addLinesAndWhitespace(node, el, junctionNode);  
    
    // Add checkbox
    if (getNodeAttribute(el, "checkBox") == true)
    {
        var cb = createCheckBox(el);
        node.appendChild(cb);
    }
             
    // Add anchor tag
    elAnchor = el.document.createElement("<A>");
    elAnchor.onclick = nodePlusMinusClick;
    junctionNode.applyElement(elAnchor, "outside");
        
    // Add second anchor for image/text
    elAnchor = el.document.createElement("<A tabindex=-1>");
    str = getNodeAttribute(el, "NavigateUrl");
    if (str != null && str != "")
    {
        elAnchor.href = str;
    }
    str = getNodeAttribute(el, "Target");
    if (str != null)
        elAnchor.target = str;
        
    // For accessibility, generate another anchor to enclose the text node
    var accessAnchor = elAnchor.cloneNode();
    accessAnchor.id = "_tnaccess";
    
    elAnchor.onclick = nodeClick;
    elAnchor.oncontextmenu = contextmenu;
    elAnchor.onmousedown = mousedown;
    elAnchor.onmouseup = mouseup;
    node.insertBefore(elAnchor);
        
    imageSrc = (nodeClass == "parent" && el.getAttribute("expanded") == true && expImgUrl != null ? expImgUrl : imgUrl);

    var spacer = null;
    if (imageSrc != null && imageSrc != undefined)
    {
        image = el.document.createElement("<IMG align='absmiddle' border='0' class='icon' id='_nodeicon'>");
        image.src = imageSrc;
        image.style.cssText = g_styles["icon"];
        elAnchor.appendChild(image);
        spacer = el.document.createElement("<SPAN>");
        spacer.style.width = 5;
        elAnchor.appendChild(spacer);
    }
    
    var textNode = generateTextNode(el);
    if (spacer != null)
    {
        spacer.style.cursor = textNode.style.cursor;
        image.style.cursor = textNode.style.cursor;
    }
    
    if (nodeClass == "parent" && element.getAttribute("showToolTip") != false)
        accessAnchor.title = textNode.innerText + " : " + L_strToolTip_Text;
    
    accessAnchor.appendChild(textNode);
    elAnchor.appendChild(accessAnchor);
    
    elAnchor.onmouseenter = mOver;
    elAnchor.onmouseleave = mOut;
        
    return node;
}

//
// createCheckBox
//
function createCheckBox(el)
{
    var form = el.document.createElement("<FORM style='display:inline' name='_fcb'>");
    var bChecked = el.getAttribute("checked");
    var cb = el.document.createElement("<INPUT style='display:inline' tabindex=-1 type=checkbox name='_cb'" + (bChecked ? " checked " : " ") + "/>");
    cb.onclick = checkboxClick;
    form.appendChild(cb);
    
    return form;
}

//
// generateJunctionNode()
//
function generateJunctionNode(el, cJunction, nodeClass)
{
    var imageSrc;
    var junctionNode;
    var systemImagesPath = element.getAttribute("systemImagesPath");
    
    if (element.getAttribute("showLines") != false)
    {
        imageSrc = systemImagesPath;
        switch (cJunction)
        {
            case 'L':
                imageSrc += "L";
                break;
            case 'T':
                imageSrc += "T";
                break;
            case 'R':
                imageSrc += "R";
                break;
            case 'F':
                imageSrc += "F";
                break;
            default:
                return null;
                break;
        }
        if (nodeClass == "parent" && element.getAttribute("showPlus") != false )
        {
            if (el.getAttribute("expanded") == true)
                imageSrc += "minus.gif";
            else
                imageSrc +="plus.gif";
        }
        else
            imageSrc += ".gif";
    }
    else
    {
        if (nodeClass == "parent" && element.getAttribute("showPlus") != false)
        {
            if (el.getAttribute("expanded") == true)
                imageSrc = systemImagesPath + "minus.gif";
            else
                imageSrc = systemImagesPath + "plus.gif";
        }
        else
        {
            imageSrc = systemImagesPath + "white.gif";
        }
    }
    if (element.getAttribute("showLines") == false && element.getAttribute("showPlus") == false)
        junctionNode = element.document.createElement("<SPAN name='junction'>");
    else
    {
        junctionNode = element.document.createElement("<IMG align='absmiddle' border='0' class='icon' name='junction'>");
        junctionNode.src = imageSrc;
    }    
    return junctionNode;
}

//
// addLinesAndWhitespace()
//
function addLinesAndWhitespace(node, el, junctionNode)
{
    //
    // Walk up tree to draw lines/whitespace
    //
    var elWalk = el.parentElement;
    var elInsertBefore = junctionNode;
    var systemImagesPath = element.getAttribute("systemImagesPath");

    if (element.getAttribute("showLines") != false)
    {
        while (elWalk && elWalk.tagName.toLowerCase() == "treenode")
        {
            var nextSib = elWalk.nextSibling;
            while (nextSib != null && nextSib.nodeType == 3)
                nextSib = nextSib.nextSibling;
                
            var imageSrc;
            var image;
            
            if (nextSib != null && nextSib.tagName.toLowerCase() == "treenode")
                imageSrc = systemImagesPath + "I.gif";
            else
                imageSrc = systemImagesPath + "white.gif";
            image = el.document.createElement("<IMG align='absmiddle' border='0'>");
            image.src = imageSrc;
            elInsertBefore = node.insertBefore(image, elInsertBefore);
            elWalk = elWalk.parentElement;
        }
    }    
    else
    {
        var strIndex = getNodeIndex(el);
        if (strIndex.indexOf(".") != -1)
        {
            if (element.getAttribute("Indent") != null)
            {
                if (isRtl())
                    node.style.marginRight = element.getAttribute("Indent");
                else                           
                    node.style.marginLeft = element.getAttribute("Indent");
            }
        }
    }
}

//
// generateTextNode()
//
// el: treenode for which to generate text node
//
function generateTextNode(el)
{
    var textNode = el.document.createElement("<SPAN id=_tntext tabIndex=-1 style='display:inline; height=100%'>");
    
    if (el.getAttribute("Text") != null)
    {
        textNode.innerHTML = el.getAttribute("Text");
    }
    else
    {
        // Remove any TREENODEs from the inner content, keeping everything else.
        var iChild = 0;
        while (iChild < el.childNodes.length)
        {
            if (el.childNodes[iChild].nodeType == 3 || el.childNodes[iChild].tagName.toLowerCase() != "treenode")
            {
                // just copy the content
                var oClone = el.childNodes[iChild].cloneNode(true);
                textNode.appendChild(oClone);
            }
            iChild++;
        }
    }
    textNode.className = "defaultstyle";
    var defStyle = cascadeStyle(el, "defaultstyle");
    textNode.style.cssText = defStyle;

    return textNode;
}

//
// updateTree(el)
//
// Show or hide the children of element el based on el's Expanded
// attribute.
//  
function updateTree(el)
{
    if (el.getAttribute("expanded") == true)
    {
        // If we previously expanded this
        // node, just show its children without rebuilding them.
        var i = 0;
        var coll = el.children.tags("treenode");
        var bRebuild = true;
        if (el.getAttribute("_buildChildren") != true && (coll.length > 0 && coll(0).getAttribute("subtree") != null))
        {   
            bRebuild = false; 
            for (var i = 0; i < coll.length; i++)
            {
                if (coll(i).subtree == null)
                {
                    // a node has been added since we last expanded.  Rebuild everything.
                    bRebuild = true;
                    break;
                }
                coll(i).subtree.style.display = "block";
            }
        }
        if (bRebuild)
        {
            // build and show children
            el.removeAttribute("_buildChildren");
            buildTree(el, getNodeLevel(el));
            reselectNode(el);
            if (HoverNodeIndex == getNodeIndex(el))
                HoverNode(el);
        }
    }
    
    else
    {
        // hide children
        var collChildren = el.children.tags("treenode");
        for (var i = 0; i < collChildren.length; i++)
        {
            collChildren(i).subtree.style.display = "none";
        }
               
        // If the selected or hovered node was one of the collapsed node's descendants,
        // the collapsed node must become selected/hovered instead
        var index = getNodeIndex(el);
        if (selectedNodeIndex.length > index.length && selectedNodeIndex.substr(0,index.length) == index)
        {
            selectNode(el);
        }
        else if (selectedNodeIndex == index)
            changeIcon(el, "SelectedImageUrl");
            
        if (HoverNodeIndex.length >= index.length && HoverNodeIndex.substr(0, index.length) == index)
        {
            if (selectedNodeIndex != index)
            {
                if (HoverNodeIndex != index)
                {
                    UnhoverNode(getNodeFromIndex(HoverNodeIndex));
                    HoverNode(el);
                }
            }
            else
                UnhoverNode(getNodeFromIndex(HoverNodeIndex));
        }
    }
    setHiddenHelperValue();
}        
    
//
// cascadeStyle(el, att)
//
// Cascade style from built-in to the tree to the type to the node.
//
function cascadeStyle(el, att)
{
    // built-in
    var str = g_styles[att];

    // tree
    var strStyle = element.getAttribute(att);
    if (strStyle != null)
        str = str + ";" + strStyle;
    
    // type
    strStyle = getNodeTypeAttribute(el, att);
    if (strStyle != null)
        str = str + ";" + strStyle;
    
    // node
    strStyle = el.getAttribute(att);
    if (strStyle != null)
        str = str + ";" + strStyle;
    
    return str;
}

//
// getNodeTypeAttribute    
//
// Returns the given attribute from the given element's node type.
//
function getNodeTypeAttribute(el, att)
{
    var _nodetype = getNodeTypeObject(el);
    if (_nodetype != null)
        return _nodetype.getAttribute(att);
    return null;
}

//
// getNodeAttribute
//
// Returns the given attribute from the node, the node's type, or the treeview
//
function getNodeAttribute(el, att)
{
    var strReturn;
    
    // try the node
    strReturn = el.getAttribute(att);
    if (strReturn != null)
        return strReturn;
        
    // try the node's type
    strReturn = getNodeTypeAttribute(el, att);
    if (strReturn != null)
        return strReturn;
        
    // try the tree
    return element.getAttribute(att);
}

//
// navigateNode()
//
// If the given node has a NavigateUrl, navigate to it.  Return TRUE if we're navigating our own page; FALSE otherwise.
//
function navigateNode(el)
{
    var url = getNodeAttribute(el, "NavigateUrl");
    if (url != null && url != "")
    {
        var target = getNodeAttribute(el, "Target");
        if (target == null || target == "_self")
        {
            window.open(url, "_self");
            return true;
        }
        else
            window.open(url, target);
    }
    return false;
}

//
// checkboxClick()
//
// event handler for mouse click on an item's checkbox
//
function checkboxClick()
{
    if (g_bInteractive == false)
        return;

    var el = this.parentElement.parentElement.treenode;
    event.cancelBubble = true;
    
    doCheckboxClick(el);
    fireQueuedEvents();
}

//
// doCheckboxClick()
//
function doCheckboxClick(el)
{
    el.checked = !el.checked;
    var evt = createEventObject();
    evt.treeNodeIndex = getNodeIndex(el);
    g_nodeClicked = el;
    _tvevtCheck.fire(evt);
}
            
//
// nodeClick()
//
// event handler for mouse click on an item in the tree
//
function nodeClick()
{
    if (g_bInteractive == false)
        return;

    var el = this.parentElement.treenode;
    if (doNodeClick(el) == true)
    {
        if (element.getAttribute("selectExpands") == true)
            doNodePlusMinusClick(el);
        fireQueuedEvents();
    }
}

//
// contextmenu()
//
// event handler for right-clicking a tree node
//
function contextmenu()
{
    event.cancelBubble = true;
    e = element.document.createEventObject(event);
    e.treeNodeIndex = getNodeIndex(this.parentElement.treenode);
    event.returnValue = element.fireEvent("oncontextmenu", e);
}

//
// mousedown()
//
function mousedown()
{
    if (event.button & 1)
    {
        g_bMouseDown = true;
    }
}

//
// mouseup()
//
function mouseup()
{
    g_bMouseDown = false;
}

//
// nodePlusMinusClick()
//
// event handler for mouse click on the plus/minus icon of a treenode
//
function nodePlusMinusClick()
{
    if (g_bInteractive == false)
        return;

    var el = this.parentElement.treenode;
    if (doNodePlusMinusClick(el) == true)
        fireQueuedEvents();
}

//
// doNodeClick()
//
// Does the work associated with a node click.  Separated out from nodeClick() so that
// we can call it directly without having to identify the anchor element of a node.
//
// returns: true to continue processing
//          false to stop (because we're navigating our own page)
//
function doNodeClick(el)
{
    if (g_bInteractive == false)
        return;
        
    g_nodeClicked = el;

    // The element, which is in a content node outside of the document, is outside the event hierarchy.
    // Fire the event ourselves, rather than relying on bubbling.
    event.cancelBubble = true;
    el.fireEvent("onclick");        // Execute our onclick handler
    element.fireEvent("onclick", event);  // Execute the tree's onclick handler

    if (getNodeAttribute(el, "NavigateUrl") != null)
    {
        var target = getNodeAttribute(el, "Target");
        if (target == null || target.toLowerCase() == "_self")
            return false;
    }

    selectNode(el);
    return true;
}

//
// doNodePlusMinusClick()
//
// Does the work associated with a node click.  Separated out from nodePlusMinusClick() so that
// we can call it directly without having to identify the anchor element of a node.
//
// return: true if something interesting happened (expanded, collapsed), false otherwise
//
function doNodePlusMinusClick(el)
{
    if (g_bInteractive == false)
        return false;
        
    // The element, which is in a content node outside of the document, is outside the event hierarchy.
    // Fire the event ourselves, rather than relying on bubbling.
    event.cancelBubble = true;

    g_nodeClicked = el;

    if (el.getAttribute("expanded") == false && el.getAttribute("_bound") == null && el.getAttribute("TreeNodeSrc") != null)
    {
        el._isExpanding = true;
        private_databind(el);
        return true;
    }
    else
        return finishNodePlusMinusClick(el);
}

function finishNodePlusMinusClick(el)
{        
    // See if we're a leaf (no children) or a branch (children)
    var exp = getNodeAttribute(el, "expandable");
    if (exp == null && el.getAttribute("TreeNodeSrc") != null)
        exp = "checkOnce";

    if (el.children.tags("treenode").length > 0 || exp == "always" || (exp == "checkOnce" && el.getAttribute("checkedExpandable") != true))
    {
        //
        // We're a branch.  Update ourselves.
        //
        var expanded = !el.getAttribute("expanded");
        el.setAttribute("expanded", expanded, 0);
        
        if (exp == "checkOnce")
            el.checkedExpandable = true;
            
        var evt = createEventObject();
        evt.treeNodeIndex = getNodeIndex(el);

        var eventToFire = changeJunctionImage(el);
        
        // update our children
        updateTree(el);
        doVisualRefresh();
        
        // show status node if we're posting back for databinding
        if (expanded == true && el.children.tags("treenode").length == 0 && element.getAttribute("onfirequeuedevents") != null)
            addStatusNode(el, L_strRetrievingNodes_Text);
        
        eventToFire.fire(evt);

        return true;
    }
    return false;
}

//
// changeJunctionImage()
//
// Changes the +/- junction image to match current Expanded state.
//
// el: treenode element containing junction image to change
//
function changeJunctionImage(el)
{
    // find the icons we need to change
    var icon1 = el.subtree.all("junction",0);
    
    if (el.getAttribute("expanded") == true)
    {
        // Expanding the node
        if (icon1 != null)
            icon1.src = icon1.src.replace(/plus/, "minus");
        if (selectedNodeIndex != getNodeIndex(el) || getNodeAttribute(el, "selectedimageurl") == null)
            changeIcon(el, "ExpandedImageUrl");
        return _tvevtExpand;
    }
    else
    {
        // Collapsing the node
        if (icon1 != null)
            icon1.src = icon1.src.replace(/minus/, "plus");
        if (selectedNodeIndex != getNodeIndex(el))
            changeIcon(el, "ImageUrl");
        return _tvevtCollapse;
    }
}

//
// DefaultNodeOnClick()
//
// A default onclick handler for treenode elements to cancel the event bubble.
// This is needed for the server control, otherwise the event will bubble up the
// tree until it hits a node with an onclick handler.  In the case of a server
// control, odds are good that the onclick handler will cause a server postback,
// thereby preventing the tree from getting its onclick.  So we need to cancel
// the bubble, allowing the onclick event we fire on the tree to get through.
//
function DefaultNodeOnClick()
{
    event.cancelBubble = true;
}

function getClickedNodeIndex()
{
    if (g_nodeClicked != null)
        return getNodeIndex(g_nodeClicked);
    else
        return null;
}

function getNodeLevel(node)
{
    var level = 0;
    while (node.parentElement.tagName.toLowerCase() == "treenode")
    {
        node = node.parentElement;
        level++;
    }
    return level;
}
    
//
// getNodeIndex()
//
// Walks up the tree, generating an index string of the form a.b.c[...].z (ex: 1.0.5.12) where
// each number represents a 0-based index into a set of children.  Each set of these values
// creates a unique index to a node.  In the following tree:
//         A
//       / | \
//      B  C  D
//     / \   / \
//    E   F G   H
// node F is 0.0.1, node G is 0.2.0, and H is 0.2.1.
//
function getNodeIndex(node)
{
    var strIndex = "";
    if (node != null)
    {
        if (node.getAttribute("sibIndex") == null)
        {
            if (node.parentElement == null)
            {
                // There is no parent, this node is in the ether
                return null;
            }

            // generate a sibling index
            var col = node.parentElement.children.tags("treenode");
            var i = 0;
            while (col[i] != node)
                i++;
            node.sibIndex = i;
        }
        strIndex = node.sibIndex.toString();
        while (node.parentElement && node.parentElement.tagName.toLowerCase() == "treenode")
        {
            node = node.parentElement;
            if (node.getAttribute("sibIndex") == null)
                return null;
            strIndex = node.sibIndex + "." + strIndex;
        }
    }
    return strIndex;
}

//
// getNodeFromIndex()
//
// The flipside of getNodeIndex, this function returns a node given a dot-delimited index
//
function getNodeFromIndex(strIndex)
{
    if (strIndex != null && strIndex != undefined && strIndex.length != 0)
    {
        // convert index string into array of strings
        var a = strIndex.split(".");
        var i = 0;
        var node = contentNode;
        while (i < a.length)
        {
            var coll = node.children.tags("treenode");
            if (coll == null || coll.length < (a[i] - 0) + 1)
            {
                return null;
            }                
            node = coll.item(a[i++] - 0);
        }
        return node;
    }
    else
    {
        return null;
    }
}

//
// getNextVisibleNode()
//
function getNextVisibleNode(node)
{
    var next = node;
    if (node.getAttribute("expanded") == true)
    {
        // get first child treenode
        next = node.children[0];
        while (next != null && next != undefined && next.nodeName.toLowerCase() != "treenode")
            next = next.nextSibling;
        if (next)
            return next;
    }
    
    // get first sibling treenode
    next = node.nextSibling;
    while (next != null && next != undefined && next.nodeName.toLowerCase() != "treenode")
        next = next.nextSibling;
    if (next != null) 
        return next;
     
    // get first sibling of first ancestor that has one     
    next = node.parentElement;
    while ((next.nextSibling == null || next.nextSibling == undefined) && next.nodeName.toLowerCase() == "treenode")
    {
        next = next.parentElement;
    }
    if (next.nextSibling != null && next.nextSibling != undefined && next.nextSibling.nodeName.toLowerCase() == "treenode")
        return next.nextSibling;
    else
        return null;
}
        
//
// getPreviousVisibleNode()
//
function getPreviousVisibleNode(node)
{
    var prev = node;
    
    // check for a previous sibling
    prev = node.previousSibling;
    while (prev != null && prev != undefined && prev.nodeName.toLowerCase() != "treenode")
        prev = prev.previousSibling;
    if (prev)
    {
        // Found a previous sibling.  If that sibling is expanded, we need to drop down to its last child
        if (prev.getAttribute("expanded") == true)
        {
            // get last child
            var lastChild = prev;
            while (lastChild != node && lastChild != null)
            {
                prev = lastChild;
                lastChild = getNextVisibleNode(prev);
            }
        }
        return prev;
    }
    
    // get parent
    if (node.parentElement.nodeName.toLowerCase() == "treenode")
        return node.parentElement;
    else
        return null;
}        

//
// setHiddenHelperValue()
//
function setHiddenHelperValue()
{
    var id = element.HelperID;
    if (id == null)
        return;

    var helper = window.document.all(id);
    if (helper == null)
        return;

    var parentTop = -1;
    var parentLeft = -1;
    var parent = element.offsetParent;
    if (parent != null)
    {
        parentTop = parent.scrollTop;
        parentLeft = parent.scrollLeft;
    }

    helper.value = (g_bFocus ? "1" : "0") + "|" + HoverNodeIndex + "|" + element.scrollTop + "|" + element.scrollLeft + "|" + parentTop + "|" + parentLeft + "|" + g_strQueuedEvents;
}

//
// scrollTree()
//
function scrollTree(tnode)
{
    var node = tnode.subtree.all.item("_tntext", 0);

    var top = node.offsetTop - element.scrollTop;
    if (top < 0)
    {
        element.scrollTop += top;
    }
    else
    {
        var bottom = top + node.offsetHeight;
        var elemHeight = element.clientHeight;
        if (bottom > elemHeight)
        {
            element.scrollTop += bottom - elemHeight;
        }
    }

    var rc = node.getBoundingClientRect();
    var elRc = element.getBoundingClientRect();

    // scroll window if we're focused  
    if (g_bFocus)
    {
        if (elRc.top + rc.top < element.document.body.clientTop) 
            node.scrollIntoView(true);
        else if (elRc.top + rc.bottom > element.document.body.clientHeight)
            node.scrollIntoView(false);
    }

}

//
// getInheritedType()
//
// Returns the node's inheritedType, if defined, or finds it and returns it if undefined.
// A node's inheritedType is the first of:
//      * parent's childType
//      * parent's type's childType
//      * parent's inheritedType's childType
//      * parent's inheritedType
//
function getInheritedType(el)
{
    if (el.inheritedType === undefined || g_bInTypesBoundEvent)
    {
        var parentNode = el.parentElement;
/*
        while (parentNode.tagName.toLowerCase() != "treenode" && parentNode.tagName.toLowerCase() != "treeview")
            parentNode = parentNode.parentElement;
*/        
        // parent's childType
        el.inheritedType = parentNode.getAttribute("childType");
        var tagname = parentNode.tagName.toLowerCase();
        
        if (el.inheritedType == null && tagname != "treeview")
        {
            // parent's type's or inheritedType's childType
            var _parenttype = getNodeTypeObject(parentNode);
            if (_parenttype != null)
            {
                el.inheritedType = _parenttype.getAttribute("childType");
            }
                       
            // parent's inheritedType
            if (el.inheritedType == null && tagname == "treenode")
            {
                el.inheritedType = getInheritedType(parentNode);
            }
        }

        // grab from the treeview
        if (el.inheritedType == null)
            el.inheritedType = element.getAttribute("childType");
    }
    return el.inheritedType;
}
 
//
// getNodeTypeObject()
//
// Returns the node type object for the given node, if defined.  If undefined, searches
// for and stores the node type object, then returns it.  Returns null if no type is defined
// for this node.
//
// This function assumes that a node's type or inheritedType attribute holds the name of its type
//
function getNodeTypeObject(el)
{
    if (el.nodetypeIndex == undefined || g_bInTypesBoundEvent)
    {
        var theType = el.getAttribute("type");
        if (theType == null)
            theType = getInheritedType(el);
        if (theType == null)
            return null;
        
        theType = theType.toLowerCase();
        var i = 0;
        var len = element.nodeTypes.length;
        while (i < len)
        {
            if (element.nodeTypes[i].getAttribute("type") == theType)
            {
                el.nodetypeIndex = i;
                break;
            }
            i++;
        }
    }
    return element.nodeTypes[el.nodetypeIndex];
}

//
// replaceJunctionNode()
//
// Replace the junction node of the given node by generating a new one
// 
// node: treenode on which to perform replacement
//
function replaceJunctionNode(node)
{
    if (node.subtree == null)
        return;
    var oldNode = node.subtree.all("junction", 0);
    if (oldNode == null)
        return;
        
    var cJunction = calcJunction(node);
    var exp = node.getAttribute("Expandable");
    if (exp == null && node.getAttribute("TreeNodeSrc") != null)
        exp = "checkOnce";
    var bChildNodes = node.children.tags("treenode").length > 0;
    var junctionNode = generateJunctionNode(node, cJunction, bChildNodes || (exp == "always" || (exp == "checkOnce" && node.getAttribute("checkedExpandable") != true)) ? "parent" : "child");          
    var accessNode = node.subtree.all("_tnaccess", 0);
    if (!bChildNodes)
        accessNode.title = ""; 
    else
    {
        var textNode = node.subtree.all("_tntext", 0);
        accessNode.title = textNode.innerText + " : " + L_strToolTip_Text;
    }
    oldNode.replaceNode(junctionNode);
}

//
// addStatusNode()
//
function addStatusNode(el, str)
{
    if (el.subtree != null && el.subtree.all.item("_fetch", 0) != null)
        return;
        
    // Show "fetching" message
    var fetchNode =  el.document.createElement("<DIV id=_fetch>");
    var imageNode = el.document.createElement("<IMG align='absmiddle' border='0'>");
    imageNode.src = element.getAttribute("systemimagespath") + "white.gif";
    fetchNode.appendChild(imageNode);    
    var junctionNode = generateJunctionNode(null, 'L', "child");
    fetchNode.appendChild(junctionNode);
    addLinesAndWhitespace(fetchNode, el == element ? contentNode : el, junctionNode);  
    var textNode = el.document.createElement("<SPAN id=_tntext tabIndex=-1 style='display:inline; height=100%'>");
    textNode.innerText = str;
    textNode.className = "defaultstyle";
    var defStyle;
    if (el == element)
        defStyle = g_styles["defaultstyle"] + ";" + element.getAttribute("defaultstyle");
    else
        defStyle = cascadeStyle(el, "defaultstyle");
    textNode.style.cssText = defStyle;
    fetchNode.appendChild(textNode);
    if (el == element)
    {
        if (!g_bCreated)
        {
            // Create viewlink.
            fetchNode.style.display = "block";
            defaults.viewLink = fetchNode.document;
        }
        else
        {
            treeviewNode.appendChild(fetchNode);
        }
    }
    else
    {
        if (el.subtree != null)
            el.subtree.appendChild(fetchNode);
    }
    doVisualRefresh();
}

//
// databindNode()
//
// Databind to the given node's TreeNodeSrc & TreeNodeXsltSrc.  This creates
// the node's children based on this binding, but does not affect the node
// itself.
//
// el: node for which we're databinding
//
function databindNode(el)
{
    var src = el.getAttribute("TreeNodeSrc");
    if (src == null)
        return;

    addStatusNode(el, L_strRetrievingNodes_Text);
    el._bound = "binding";  

    var XsltSrc = el.getAttribute("TreeNodeXsltSrc");
    var databindInfo = new Object();
    databindInfo.el = el;
    databindInfo.transform = null;
    databindInfo.island = null;
    databindInfo.src = src;
    
    if (el == contentNode)
        g_bNodesReady = false;

    if (XsltSrc != null)
    {
        databindInfo.transform = element.document.all(XsltSrc);
        if (databindInfo.transform == null)
        {
            // create our own data island for the transform

            try
            {
                databindInfo.transform = new ActiveXObject("Msxml2.DOMDocument");
            }
            catch (e)
            {
                databindError(databindInfo, L_strMSXMLError_Text);
                return;
            }
            databindInfo.transform.async = false;
            if (!databindInfo.transform.loadXML(XsltSrc))
                databindInfo.transform.load(XsltSrc);
        }
        else
            databindInfo.transform = databindInfo.transform.XMLDocument;
    }
    
    databindInfo.island = element.document.all(src);

    if (databindInfo.island == null)
    {
        // create our own data island
        try
        {
            databindInfo.island = new ActiveXObject("Msxml2.DOMDocument");
        }
        catch (e)
        {
            databindError(databindInfo, L_strMSXMLError_Text);
            return;
        }
        databindInfo.island.async = false;
        g_pendingSyncBinds = g_pendingSyncBinds.concat(databindInfo);
        if (g_bindTimer == -1)
            g_bindTimer = window.setTimeout(syncBind, 10, "JScript");
    }
    else
        finishDatabindingNode(databindInfo, true);
}

function syncBind()
{
    // loop through pending synchronous databinds
    while (g_pendingSyncBinds.length > 0)
    {
        var databindInfo = g_pendingSyncBinds[0];
        // remove from array
        g_pendingSyncBinds.splice(0, 1);
        if (!databindInfo.island.loadXML(databindInfo.src))
        {
            databindInfo.island.async = true;
            // add to our array of pending databinds
            g_pendingBinds = g_pendingBinds.concat(databindInfo);
            databindInfo.island.onreadystatechange = finishDatabindingNodeHandler;
            databindInfo.island.load(databindInfo.src);
        }
        else
            finishDatabindingNode(databindInfo, true);
    }
    g_bindTimer = -1;
}
    
function finishDatabindingNodeHandler()
{
    // loop through pending databinds, resolving those which are complete
    for (var i = 0; i < g_pendingBinds.length; i++)
    {
        if (g_pendingBinds[i].island.readyState == 1)
            g_pendingBinds[i].b = true;
        if (g_pendingBinds[i].island.readyState == 4 && g_pendingBinds[i].b == true)
        {
            var bindInfo = g_pendingBinds[i];
            g_pendingBinds.splice(i, 1);
            finishDatabindingNode(bindInfo, false);
            i--;
        }
    }
}

function finishDatabindingNode(databindInfo, bReady)
{
    if (bReady != true && databindInfo.island == null)
        return;

    if (databindInfo.island.xml == "" || (databindInfo.transform != null && databindInfo.transform.xml == ""))
    {
        var regexp = /%s/;
        var str = "<B>" + L_strXMLError_Text + "</B>";
        str = str.replace(regexp, databindInfo.el.getAttribute('TreeNodeSrc'));
        databindError(databindInfo, str);
        return;
    }
   
    // Databind to this data island
    if (databindInfo.transform != null)
    {
        var html = databindInfo.island.transformNode(databindInfo.transform);
        try
        {
            databindInfo.island =  new ActiveXObject("Msxml2.DOMDocument");
        }
        catch (e)
        {
            databindError(databindInfo, L_strMSXMLError_Text);
            return;
        }
        databindInfo.island.loadXML(html);
    }

    // Make sure the root is a TREENODES tag
    var container = databindInfo.island.selectSingleNode("TREENODES");
    if (container == null)
    {
        var strXslt = databindInfo.el.getAttribute("TreeNodeXsltSrc");
        var strError = "<B>" + L_strInvalidXML_Text;
        var regexp = /%s/;
        strError = strError.replace(regexp, databindInfo.el.getAttribute('TreeNodeSrc'));
        if (strXslt != null)
        {
            strError += L_strXSLTError_Text + "</B>";
            strError = strError.replace(regexp, databindInfo.el.getAttribute('TreeNodeXsltSrc')); 
        }
        else
            strError += "</B>";
        databindError(databindInfo, strError);
        return;
    }
    
    var child = container.firstChild;
    var html = "";
    while (child != null)
    {
        if (child.nodeName.toLowerCase() == "treenode")
            html += child.xml;
        child = child.nextSibling;
    }
    databindInfo.el._bound = "complete";
    
    // All nodes must have namespace inserted
    html = html.replace(/(<\/?)(treenode)/gi, "$1" + element.scopeName + ":$2");
    
    if (databindInfo.el == element)
    {
        contentNode.innerHTML = html;
        g_bNodesReady = true;
        tryToBuildTreeFromRoot(); 
    }
    else
    {
        databindInfo.el.innerHTML += html;
        if (databindInfo.el.subtree != null)
        {
            buildTree(databindInfo.el, getNodeLevel(databindInfo.el));
            if (databindInfo.el._isExpanding == true)
            {
                databindInfo.el.removeAttribute("_isExpanding");
                finishNodePlusMinusClick(databindInfo.el);
            }
            else
            {
                reselectNode(databindInfo.el);
            }
        }
    }

    doVisualRefresh();
    
    var evt = element.document.createEventObject();
    if (databindInfo.el == element)
        evt.treeNodeIndex = null;
    else
        evt.treeNodeIndex = getNodeIndex(databindInfo.el);
    evt.reason = 0;
    _tvevtNodeBound.fire(evt);
}

//
// databindError()
//
// Report an error during databinding
//
function databindError(databindInfo, strError)
{
    var fetch;
    var event = createEventObject();
    if (databindInfo.el == element)
        event.treeNodeIndex = null;
    else
        event.treeNodeIndex = getNodeIndex(databindInfo.el);
    event.reason = 2;
    _tvevtNodeBound.fire(event);
    
    if (databindInfo.el == element)
        fetch = defaults.viewLink.all.item("_fetch", 0);
    else
        fetch = databindInfo.el.subtree.all.item("_fetch", 0);
    if (fetch != null)
    {
        var tntext = fetch.all.item("_tntext", 0);
        tntext.innerHTML = strError;
    }
}

//
// databindTypes()
//
// Bind the tree for TreeNodeTypes
//
function databindTypes()
{
    var src = element.getAttribute("TreeNodeTypeSrc");

    if (src == null)
        return;
 
    g_bTypesReady = false;
    
    g_typeIsland = element.document.all(src);
    if (g_typeIsland == null)
    {
        // create our own data island
        try
        {
            g_typeIsland = new ActiveXObject("Msxml2.DOMDocument");
        }
        catch (e)
        {
            databindError(databindInfo, L_strMSXMLError_Text);
            return;
        }
        g_typeIsland.async = false;
        if (!g_typeIsland.loadXML(src))
        {
            g_typeIsland.async = true;
            g_typeIsland.onreadystatechange = finishDatabindingTypes;
            g_typeIsland.load(src);
        }
        else
            finishDatabindingTypes();
    }
}

function finishDatabindingTypes()
{
    if (g_typeIsland.readyState != 4)
        return;

    if (g_typeIsland.xml == "")
    {
        databindTypesError();
        return;
    }
            
    // Make sure the root is a TREENODETYPES tag
    var container = g_typeIsland.selectSingleNode("TREENODETYPES");
    if (container == null)
    {
        databindTypesError();
        return;
    }
    
    var child = container.firstChild;
    var html = "";
    while (child != null)
    {
        if (child.nodeName.toLowerCase() == "treenodetype")
            html += child.xml;
        child = child.nextSibling;
    }

    // All nodetypes must have namespace inserted
    html = html.replace(/(<\/?)(treenodetype)/gi, "$1" + element.scopeName + ":$2");
    
    g_typesNode = element.document.createElement("DIV");
    g_typesNode.innerHTML = html;

    element.nodeTypes = g_typesNode.children.tags("TREENODETYPE");
    verifyTypeValues();
    g_bTypesReady = true;
    var evt = element.document.createEventObject();
    evt.reason = 0;
    g_bInTypesBoundEvent = true;
    _tvevtNodeTypesBound.fire(evt);
    g_bInTypesBoundEvent = false;
    tryToBuildTreeFromRoot();
}

//
// databindTypesError()
//
function databindTypesError()
{
    var event = createEventObject();
    event.reason = 2;
    g_bInTypesBoundEvent = true;
    _tvevtNodeTypesBound.fire(event);
    g_bInTypesBoundEvent = false;
    g_typesNode = element.document.createElement("DIV");
    element.nodeTypes = g_typesNode.children.tags("TREENODETYPE");
    g_bTypesReady=true;
}

//
// verifyExpandableValue()
//
// Verifies that the value is one of the acceptable Expandable values
//
// value: value to verify
//
function verifyExpandableValue(value)
{
    var lval = value.toLowerCase();
    switch (lval)
    {
        case "auto":
        case "checkonce":
        case "always":
            return true;
        default:
            return false;
            break;
    }
}

//
// verifyBooleanAttribute()
//
// Verifies that the attribute's value is boolean, or a text equivalent.  If the latter,
// the attribute is converted to the corresponding boolean.  If the value is not a boolean
// equivalent or null, the attribute is set to false.
//
// node: node on which to verify attribute
// att: attribute to verify
//
// returns: true if the value was a boolean or equivalent
//          false otherwise
//
function verifyBooleanAttribute(node, att)
{
    var value = node.getAttribute(att);
    if (value == null)
        return false;

    var boolval = makeBoolean(value);
       
    if (value == boolval)
        return true;

    node.setAttribute(att, boolval == null ? false : boolval, 0);
    return (boolval != null);
}

function makeBoolean(value)
{
    if (value == true || value == false)
        return value;
    
    if (value == null)
        return null;
        
    var lval = value.toLowerCase();
    switch (lval)
    {
        case "true":
            return true;
        case "false":
            return false;
        default:
            return null;
    }
}

//
// verifyTypeValues()
//
// converts the value of each TreeNodeType's Type attribute to lower case, and
// string booleans to true booleans
//
function verifyTypeValues()
{
    var len = element.nodeTypes.length;
    for (var i = 0; i < len; i++)
    {
        var str = element.nodeTypes[i].getAttribute("type");
        if (str != null)
            element.nodeTypes[i].setAttribute("type", str.toLowerCase(), 0);
        verifyBooleanAttribute(element.nodeTypes[i], "expanded");
        verifyBooleanAttribute(element.nodeTypes[i], "checkBox");
    }
}

//
// getNodeTypeHtml()
//
// Get the HTML source for the nodeTypes collection
//
function getNodeTypeHtml()
{
    var html = "";
    for (var i = 0; i < element.nodeTypes.length; i++)
    {
        html += element.nodeTypes[i].outerHTML;
    }
    return html;
}

//---------------------------------------------------
//
// Public OM
//
//---------------------------------------------------

//
// TreeView properties
//

function getDefaultStyle()
{
    return prop_defaultStyle;
}

function setDefaultStyle(value)
{
    if (prop_defaultStyle == value)
        return;
        
    if (typeof value == "string")
    {
        prop_defaultStyle = value;

        if (g_bCreated)
        {
            modifyNodesByType(contentNode, null, "defaultstyle")
            _tvpropDefaultStyle.fireChange();
        }
    }
}

function getHoverStyle()
{
    return prop_hoverStyle;
}

function setHoverStyle(value)
{
    if (prop_hoverStyle == value)
        return;
        
    if (typeof value == "string")
    {
        prop_hoverStyle = value;

        if (g_bCreated)
        {
            modifyNodesByType(contentNode, null, "hoverstyle")
            _tvpropHoverStyle.fireChange();
        }
    }
}

function getSelectedStyle()
{
    return prop_selectedStyle;
}

function setSelectedStyle(value)
{
    if (prop_selectedStyle == value)
        return;
        
    if (typeof value == "string")
    {
        prop_selectedStyle = value;

        if (g_bCreated)
        {
            modifyNodesByType(contentNode, null, "selectedstyle")
            _tvpropSelectedStyle.fireChange();
        }
    }
}

function getChildType()
{
    return prop_childType;
}

function setChildType(value)
{
    if (prop_childType != value)
    {
        prop_childType = value;
        if (g_bCreated)
        {
            var col = contentNode.children.tags("treenode");
            for (var i = 0; i < col.length; i++)
                buildTree(col[i], 0);  
            
            _tvpropChildType.fireChange();
        }
    }
}    
        
function getImageUrl()
{
    return prop_imageUrl;
}

function setImageUrl(value)
{
    if (prop_imageUrl != value)
    {
        prop_imageUrl = value;
        if (g_bCreated)
        {
            modifyNodesInheritingFromRoot(contentNode, "imageurl", value);
            _tvpropImageUrl.fireChange();
        }
    }
}
   
function getSelectedImageUrl()
{
    return prop_selectedImageUrl;
}

function setSelectedImageUrl(value)
{
    if (prop_selectedImageUrl != value)
    {
        prop_selectedImageUrl = value;
        if (g_bCreated)
        {
            modifyNodesInheritingFromRoot(contentNode, "selectedimageurl", value);
            _tvpropSelectedImageUrl.fireChange();
        }
    }
}
   
function getExpandedImageUrl()
{
    return prop_expandedImageUrl;
}

function setExpandedImageUrl(value)
{
    if (prop_expandedImageUrl != value)
    {
        prop_expandedImageUrl = value;
        if (g_bCreated)
        {
            modifyNodesInheritingFromRoot(contentNode, "expandedimageurl", value);
            _tvpropExpandedImageUrl.fireChange();
        }
    }
}
   
function getTarget()
{
    return prop_target;
}

function setTarget(value)
{
    if (prop_target != value)
    {
        prop_target = value;
        if (g_bCreated)
        {
            modifyNodesInheritingFromRoot(contentNode, "target", value);
            _tvpropTarget.fireChange();
        }
    }
}

function getTreeNodeSrc()
{
    return prop_treeNodeSrc;
}

function setTreeNodeSrc(value)
{
    if (prop_treeNodeSrc != value)
    {
        prop_treeNodeSrc = value;
        _tvpropTreeNodeSrc.fireChange();
    }
}

function getTreeNodeXsltSrc()
{
    return prop_treeNodeXsltSrc;
}

function setTreeNodeXsltSrc(value)
{
    if (prop_treeNodeXsltSrc != value)
    {
        prop_treeNodeXsltSrc = value;
        _tvpropTreeNodeXsltSrc.fireChange();
    }
}

function getSelectExpands()
{
    return prop_selectExpands;
}

function setSelectExpands(value)
{
    var boolval = makeBoolean(value)
    if (boolval != null && boolval != prop_selectExpands)
    {
        prop_selectExpands = value;
        if (g_bCreated)
            _tvpropSelectExpands.fireChange();
    }
}

function getExpandLevel()
{
    return prop_expandLevel;
}

function setExpandLevel(value)
{
    if (prop_expandLevel != value)
    {
        prop_expandLevel = value - 0;
        if (g_bCreated)
        {
            expandNodes(contentNode, value);
            _tvpropExpandLevel.fireChange();
        }
    }
}

function getAutoSelect()
{
    return prop_autoSelect;
}

function setAutoSelect(value)
{
    var boolval = makeBoolean(value)
    if (boolval != null && boolval != prop_autoSelect)
    {
        prop_autoSelect = value;
        if (g_bCreated)
            _tvpropAutoSelect.fireChange();
    }
}

function getTreeNodeTypeSrc()
{
    return prop_treeNodeTypeSrc;
}

function setTreeNodeTypeSrc(value)
{
    if (prop_treeNodeTypeSrc != value)
    {
        prop_treeNodeTypeSrc = value;
        if (g_bCreated)
        {
            _tvpropTreeNodeTypeSrc.fireChange();
        }
    }
}

function getShowLines()
{
    return prop_showLines;
}

function setShowLines(value)
{
    var boolval = makeBoolean(value);
    if (prop_showLines != boolval && boolval != null)
    {
        prop_showLines = boolval;
        if (g_bCreated)
        {
            buildTreeFromRoot();
            _tvpropShowLines.fireChange();
        }
    }
}

function getShowPlus()
{
    return prop_showPlus;
}

function setShowPlus(value)
{
    var boolval = makeBoolean(value);
    if (prop_showPlus != boolval && boolval != null)
    {
        prop_showPlus = boolval;
        if (g_bCreated)
        {
            modifyNodesByType(contentNode, null, "_showplus");
            _tvpropShowPlus.fireChange();
        }
    }
}

function getShowToolTip()
{
    return prop_showToolTip;
}

function setShowToolTip(value)
{
    var boolval = makeBoolean(value);
    if (prop_showToolTip != boolval && boolval != null)
    {
        prop_showToolTip = boolval;
        if (g_bCreated)
        {
            _tvpropShowToolTip.fireChange();
        }
    }
}

function getIndent()
{
    return prop_indent;
}

function setIndent(value)
{
    if (prop_indent != value)
    {
        if (typeof value == "string")
        {
            var i = parseInt(value);
            if (i == NaN)
                return;
            else
                prop_indent = i;       
        }
        else if (typeof value == "number")
            prop_indent = value;
        else
            return;
        if (g_bCreated)
        {
            if (getShowLines() != true)
                modifyNodesByType(contentNode, null, "_indent");
            _tvpropShowLines.fireChange();
        }
    }
}

function getSelectedNodeIndex()
{
    return prop_selectedNodeIndex;
}

function setSelectedNodeIndex(value)
{
    if (prop_selectedNodeIndex != value && typeof value == "string")
    {
        // validate format of string
        if (value.length == 0)
            return;
        
        if (value.search(/[^0-9.]/) != -1)    // a character other than a digit or .
            return;

        if (value[0] == '.')     // mustn't begin with a .
            return;

        if (value.indexOf("..") != -1)   // mustn't have two consecutive periods
            return;
            
        if (g_bCreated)
        {
            // does a node exist at this index?
            var node = getNodeFromIndex(value);
            if (node != null && node.subtree != null)
            {
                selectNode(node);
                _tvpropSelectedNodeIndex.fireChange();
            }
            else
            {
                // Set index to 0, if possible
                if (value != "0")
                    selectedNodeIndex = "0";
                else
                    prop_selectedNodeIndex = "";
            }
        }
        else
            prop_selectedNodeIndex = value;
    }
}

function getSystemImagesPath()
{
    return prop_systemImagesPath;
}

function setSystemImagesPath(value)
{
    if (prop_systemImagesPath != value && typeof value == "string")
    {
        prop_systemImagesPath = value;
        if (g_bCreated)
        {
            buildTreeFromRoot();
            _tvpropSystemImagesPath.fireChange();
        }
    }
}

//
// expandNodes()
//
// Recursively expand all nodes from root down through the given
// number of levels
//
// root: starting node
// level: number of levels to expand
//
function expandNodes(root, level)
{
    if (root != contentNode)
    {
        var exp = root.getAttribute("expanded");
        if (exp != true)
        {
            doNodePlusMinusClick(root);
        }
    }
    if (level > 0)
    {
        var col = root.children.tags("treenode");
        for (var i = 0; i < col.length; i++)
        {
            expandNodes(col[i], level - 1);
        }
    }
}

//
// databind()
//
// Force the tree to rebind
//
function databind()
{
    if (g_typesNode == null)
        g_typesNode = element.document.createElement("DIV");

    g_typesNode.innerHTML = getNodeTypeHtml();                        
    element.nodeTypes = g_typesNode.children.tags("TREENODETYPE");
    treeviewNode.subtree.removeNode(true);
    contentNode.innerText = "";
    databindNode(element);
}

//
// getTreeNodeType()
//
// Retrieves a public object representing the treenodetype at the requested index or
//  with the requested name
//
// key: string name or integer index of type to get
//
function getTreeNodeType(key)
{
    var tnt = null;
    var len = element.nodeTypes.length;
    
    if (typeof key == "number")
    {
        if (key >= 0 && key < len)
            tnt = element.nodeTypes[key];
    }
    else
    {
        for (var i = 0; i < len; i++)
        {
            var temp = element.nodeTypes[i];
            if (temp.getAttribute("Type") == key)
            {
                tnt = temp;
                break;
            }
        }
    }
    
    if (tnt != null)
        return private_getTreeNodeType(tnt);
    else
        return null;
}

//
// createTreeNodeType()
//
// Create a new treenodetype in the ether
//
function createTreeNodeType()
{
    var realtnt = element.document.createElement("treenodetype");
    return private_getTreeNodeType(realtnt);
}

//
// private_getTreeNodeType()
//
// Returns a public object representing the given treenodetype
//
// tnt: treenodetype for which to generate a public object
//
function private_getTreeNodeType(tnt)
{
    var obj = new Object();
    
    obj.addTo = function(tree)
    {
        if (tree.nodeTypes == null || tree.nodeTypes.length == 0)
        {
            g_typesNode = element.document.createElement("DIV");
            g_typesNode.appendChild(tnt); 
            tree.nodeTypes = g_typesNode.children.tags("TREENODETYPE");
        }
        else
        {
            g_typesNode.appendChild(tnt);
            tree.nodeTypes = g_typesNode.children.tags("TREENODETYPE");
        }            
        modifyNodesByType(contentNode, tnt.getAttribute("type"), "type");
    }
    obj.remove = function(bRedraw) { private_removeTreeNodeType(tnt, bRedraw); };
    obj.getAttribute = function(name) { return private_getNodeTypeAttribute(tnt, name); };
    obj.setAttribute = function(name, value) { private_setNodeTypeAttribute(tnt, name, value); };
    
    return obj;
}

//
// addTreeNodeType()
//
// Add the given treenodetype to the end of the tree's nodetypes collection
//
// tnt: treenodetype to add
//
function addTreeNodeType(tnt)
{
    tnt.addTo(element);
}

//
// private_removeTreeNodeType()
//
// Remove the treenodetype from the tree.  Note that redrawing nodes of this type
// requires a full tree traversal, which can be very slow.
//
// tnt: type to remove
// bRedraw: Redraw nodes of this type?
//
function private_removeTreeNodeType(tnt, bRedraw)
{
    var name = tnt.getAttribute("Type");
    
    tnt.removeNode(false);
    
    if (bRedraw != false)
    {
        // Because indices may have shifted, we'll need to rebuild the tree.
        modifyNodesByType(contentNode, null, "type");
    }
    else
    {
        // uncache the nodetypeIndex of all nodes
        modifyNodesByType(contentNode, null, "_nodetypeIndex");
    }
}

//
// modifyNodesByType()
//
// Rebuild all nodes of the given type
//
// node: current node
// type: name of type; if null, rebuild all nodes
// att: attribute of node being modified (in lower case)
//
function modifyNodesByType(node, type, att)
{
    if (node != contentNode)
    {
        if (node.subtree == null) // if the node hasn't been built yet, don't go any further
            return;
        
        if (type == null || getNodeAttribute(node, "Type") == type)
        {
            modifyNode(node, att, null, type);
            if (att == "type" || att == "childtype")
                return; // these atts already handle the node's children
        }
    }
    var col = node.children.tags("treenode");
    for (var i = 0; i < col.length; i++)
    {
        modifyNodesByType(col[i], type, att);
    }
}

//
// modifyNodesInheritingFromRoot()
//
// Searches the tree from the given node downward for all nodes which
// inherited the given attribute from the root, rebuilding the appropriate
// aspect of such nodes.  This function is called when an inheritable attribute
// is changed on the TreeView itself.
//
// root: starting node of search
// att: attribute to check
// value: new value of attribute
//
function modifyNodesInheritingFromRoot(root, att, value)
{
    if (root != contentNode)
    {
        if (root.subtree == null)
            return;
            
        if (inheritsFromRoot(root, att))
        {
            modifyNode(root, att, value, null);
            if (att == "type" || att == "childtype")
                return; // these atts already handle the node's children
        }
    }
    var col = root.children.tags("treenode");
    for (var i = 0; i < col.length; i++)
    {
        modifyNodesInheritingFromRoot(col[i], att, value);
    }
}

//
// inheritsFromRoot()
//
// Determines if the given node inherits its att value from the TreeView
//
// node: node to check
// att: att to check
//
function inheritsFromRoot(node, att)
{
    // try the node
    if (node.getAttribute(att) != null)
        return false;
        
    // try the node's type
    if (getNodeTypeAttribute(node, att) != null)
        return false;
        
    return true;
}          

//
// private_getNodeTypeAttribute()
//
// Gets the given attribute from the given node
//
// tnt: treenodetype from which to retrieve attribute
// name: name of attribute to retrieve
//
function private_getNodeTypeAttribute(tnt, name)
{
    return tnt.getAttribute(name.toLowerCase());
}

//
// private_setNodeTypeAttribute()
//
// Sets the given attribute on the given node
//
// tnt: treenodetype on which to set attribute
// name: name of attribute to set
// value: value of attribute to set
//
function private_setNodeTypeAttribute(tnt, name, value)
{
    var lname = name.toLowerCase();
    if (lname == "outerhtml")
        return;
        
    var old = tnt.getAttribute(name, value);
    
    tnt.setAttribute(name, value, 0);
    if (tnt.parentElement == null)
        return;
        
    // Update display tree if display-related change was made
    switch (lname)
    {
        case "text":            
        case "innertext":
            break;
        
        case "expandable":
            if (verifyExpandableValue(value) == true)
                modifyNodesByType(contentNode, tnt.getAttribute("type"), lname);
            else
                tnt.setAttribute(name, old, 0);
            break;

        default:
            modifyNodesByType(contentNode, tnt.getAttribute("type"), lname);
            break;
    }
} 
            
//
// createTreeNode()
//
// Creates a new treenode in the ether
//
function createTreeNode()
{
    var realNode = element.document.createElement("treenode");
    return private_getTreeNode(realNode);
}

//
// getTreeNode()
//
// Retrieves a public object representing the node at the requested index
//
// index: dot-separated index string of node to retrieve
//
function getTreeNode(index)
{
    var node = getNodeFromIndex(index);
    if (node == null)
        return null;
    
    return private_getTreeNode(node);
}

//
// private_getTreeNode()
//
// Retrieves a public object representing the given node
//
// node: treenode to munge into public object
//
function private_getTreeNode(node)
{
    var obj = new Object();
    
    obj.addAt = function(index, newnode)
    {
        if (newnode._real != null)
            private_addAt(node, index, newnode._real);
        else
        {
            var temp = private_getTreeNode(node);
            temp._real = node;
            newnode.addTo(index, temp);
        }
    };
    obj.addTo = function(index, parent)
    {
        if (parent._real != null)
            private_addAt(parent._real, index, node);
        else
        {
            var temp = private_getTreeNode(node);
            temp._real = node;
            parent.addAt(index, temp);
        }
    };
    obj.add = function(newnode) { obj.addAt(node.children.tags("treenode").length, newnode); }; 
    obj.remove = function() { private_remove(node); };
    obj.databind = function() { private_databind(node); };
    obj.getAttribute = function(name) { return private_getAttribute(node, name); };
    obj.setAttribute = function(name, value) { private_setAttribute(node, name, value); };
    obj._real = null;
    obj.findAttribute = function(name) { return getNodeAttribute(node, name); };
    obj.getNodeIndex = function()
    {
        var index = getNodeIndex(node);
        if (index == "")
            return null;
        return index;
    };
    obj.getParent = function()
    {
        if (node.parentElement == null || node.parentElement.tagName.toLowerCase() != "treenode")
            return null;
        else
            return private_getTreeNode(node.parentElement);
    }; 
    obj.getChildren = function() { return private_getChildren(node); };
    
    return obj;
}

//
// addAt()
//
// Add a root node at the given index.  TreeView method.
//
// index: integer index at which to add the node
// node: node to add
//
function addAt(index, node)
{
    node.addTo(index, private_getTreeNode(contentNode));
}

//
// add()
//
// Add a root node to the end of the tree.  TreeView method.
//
// node: node to add
//
function add(node)
{
    node.addTo(contentNode.children.tags("treenode").length, private_getTreeNode(contentNode));
}

//
// private_addAt()
//
// Implements addition of a node to the tree
//
// parent: node to add a child to
// index: integer index at which to add a child node
// child: node to add
//
function private_addAt(parent, index, child)
{
    if (child.parentElement != null)
        return;
        
    var col = parent.children.tags("treenode");
    var iCount = col.length;
    
    if (index < 0 || index > iCount)
        return;
  
    var selectedNode = getNodeFromIndex(selectedNodeIndex);
    
    //
    // add node to tree
    //
    if (index == iCount)
        parent.appendChild(child);
    else
    {
        col[index].insertAdjacentElement("beforeBegin", child);
    }

    //
    // adjust sibling indices
    //
    child.sibIndex = index;
    for (var i = index; i <= iCount; i++)
        col[i].sibIndex = i;

    //
    // adjust selected index if necessary
    //
    if (selectedNode != null && index < selectedNode.sibIndex)
        prop_selectedNodeIndex = getNodeIndex(selectedNode);
        
    //
    // update display tree if the node is now part of a treeview and its parent or previous sibling is expanded
    //
    var p = parent;
    while (p != null && p.tagName.toLowerCase() == "treenode")
        p = p.parentElement;
    if (p != null && p.tagName.toLowerCase() != "treeview")
        return;
    if (parent.getAttribute("expanded") == true || parent == contentNode)
    {
        // build added node's display tree
        var disptree = buildTree(child, getNodeLevel(child));
        if (index == iCount)
        {
            if (parent.subtree == null)
            {
                if (parent == contentNode)
                    tryToBuildTreeFromRoot();
                else
                    parent.subtree = disptree;
            }
            else
            {
                if (parent == contentNode)
                    treeviewNode.subtree.appendChild(disptree);
                else
                    parent.subtree.appendChild(disptree);
            }
        }
        else
            col[index + 1].subtree.insertAdjacentElement("beforeBegin", disptree);
            
        if (element.getAttribute("showlines") != false && index > 0 && col[index - 1].getAttribute("expanded") == true)
        {
            // rebuild previous sibling's display tree, to show correct lines.
            buildTree(col[index - 1], getNodeLevel(col[index - 1]));
            // if that tree contains the selected node, redisplay the selection
            if (selectedNodeIndex.indexOf(getNodeIndex(col[index - 1])) == 0)
                reselectNode(getNodeFromIndex(selectedNodeIndex));
        }
    }
    
    //
    // Update the junctions of the nodes immediately above and below this node, if needed
    //
    if (iCount == 0)                                // parent's first child
    {
        if (parent != contentNode)
            replaceJunctionNode(parent);
    }
    else if (index == iCount)                       // new last sibling
        replaceJunctionNode(col[index - 1]);
    else if (index == 0)
        replaceJunctionNode(col[1]);                // new first sibling
    
    if (selectedNode != null)
        prop_selectedNodeIndex = getNodeIndex(selectedNode);
    else
        selectNode(child);
}

//
// private_remove()
//
// Remove the given node from the tree
//
// node: node to remove
//
function private_remove(node)
{
    if (node.parentElement == null)
        return null;
    
    var parent = node.parentElement;
    var col = parent.children.tags("treenode");
    var iCount = col.length;
    var sibindex = node.sibIndex;
    var selectedNode = getNodeFromIndex(selectedNodeIndex);
    var nodeIndex = getNodeIndex(node);
    
    node.subtree.removeNode(true);
    node.subtree = null;
    node.removeNode(true);
    node.removeAttribute("sibIndex");
    if (node.getAttribute("expanded") == false)
        node._buildChildren = true; // set expando so we'll rebuild the node's children if the node is added again and then expanded
     
    //
    // adjust junctions and whitespace/lines
    //        
    if (iCount == 1)
        replaceJunctionNode(parent);
    else if (sibindex != 0 && sibindex == iCount - 1)
        buildTree(col[sibindex - 1], getNodeLevel(col[sibindex - 1])); // rebuild previous sibling and its subtree
    else if (sibindex == 0 && parent.tagName.toLowerCase() != "treenode")
        replaceJunctionNode(col[0]); // new first root
    
    //
    // adjust sibling indices
    //
    for (var i = sibindex; i < col.length; i++)
        col[i].sibIndex = i;       

    //
    // adjust selectedNodeIndex
    //
    if (node == selectedNode ||
     (selectedNodeIndex.length > nodeIndex.length && selectedNodeIndex.substr(0, nodeIndex.length + 1) == nodeIndex + "."))
    {
        // deleted the selected node or an ancestor of the selected node.
        var temp = prop_selectedNodeIndex;
        prop_selectedNodeIndex = "";
        if (iCount - 1 > sibindex)
            selectNode(col[sibindex]);          // the node now at the same index as the deleted node
        else if (iCount > 1 && sibindex > 0)
            selectNode(col[sibindex - 1]);      // the first sibling prior to the deleted node
        else if (nodeIndex != "0")
            selectNode(parent);                 // the parent of the deleted node
        else
        {
            prop_selectedNodeIndex = temp;
            selectNode(null);
        }
    }
    else
    {
        // adjust the selected node index to reflect new tree structure
        prop_selectedNodeIndex = "";
        selectNode(selectedNode);
    }
    return node;
}

//
// private_databind()
//
// node: node to bind
//
function private_databind(node)
{
    // If the selection is within the subtree under the node being databound,
    // then select the node.
    var dataNodeIndex = getNodeIndex(node);
    if ((dataNodeIndex != selectedNodeIndex) && (selectedNodeIndex.indexOf(dataNodeIndex) == 0))
        selectNode(node);
    
    // delete all treenode content
    col = node.children.tags("treenode");
    for (var i = col.length - 1; i >= 0; i--)
    {
        if (col[i].subtree != null)
            col[i].subtree.removeNode(true);
        col[i].removeNode(true);
    }
    node._bound = null;
    databindNode(node);
}

//
// private_getAttribute()
//
// Gets the given attribute from the given node
//
// node: node from which to retrieve attribute
// name: name of attribute to retrieve
//
function private_getAttribute(node, name)
{
    var lcName = name.toLowerCase();
    var ret = node.getAttribute(lcName);
    if (ret == null && lcName == "text")
    {
        var textnode = node.subtree.all.item("_tntext", 0);
        ret = textnode.innerText;
    }
    return ret;
}

//
// private_setAttribute()
//
// Sets the given attribute on the given node
//
// node: node on which to set attribute
// name: name of attribute to set
// value: value of attribute to set
//
function private_setAttribute(node, name, value)
{
    var lname = name.toLowerCase();
    if (lname == "outerhtml")
        return;
        
    var old = node.getAttribute(name, value);
    
    node.setAttribute(name, value, 0);
    if (node.parentElement == null)
        return;
        
    if (node.subtree == null)
        return;

    modifyNode(node, lname, value, old);        
}

//
// getChildren()
//
// public entry point for private_getChildren()
//
function getChildren()
{
    return private_getChildren(contentNode);
}

//
// private_getChildren()
//
// Returns an array of public treenode objects representing the top-level children of the given root
//
// root: DOM object parent from which to get children
//
function private_getChildren(root)
{
    var col = root.children.tags("treenode");
    var objArray = new Array(col.length);
    for (var iNode = 0; iNode < col.length; iNode++)
    {
        objArray[iNode] = private_getTreeNode(col[iNode]);
    }
    return objArray;
}

//
// modifyNode()
//
// Rebuild display node as required by change to given attribute
//
// node: node to modify
// lname: name of changed attribute, in lower case
// value: new value of attribute
// old: old value of attribute
//
function modifyNode(node, lname, value, old)
{
    // Update display tree if display-related change was made
    switch (lname)
    {
        case "defaultstyle":
        case "hoverstyle":
        case "selectedstyle":
        case "style":
            var oItem = node.subtree.all.item("_tntext", 0);
            var stylename = oItem.className;
            if (stylename == "")
                stylename = "defaultstyle";
            SetAnchorClass(oItem, stylename); // reapply current style
            if (!g_bFocus && (stylename == "selectedstyle"))
            {
                blurFilter(oItem);
            }
            break;
            
        case "text":
        case "innertext":
        case "innerhtml":
            var tntext = node.subtree.all.item("_tntext", 0);          
            var newText = generateTextNode(node);
            tntext.replaceNode(newText);
            var accessAnchor = node.subtree.all.item("_tnaccess", 0);
            if (accessAnchor.getAttribute("title") != "")
                accessAnchor.title = newText.innerText + " : " + L_strToolTip_Text;
            
            reselectNode(node);                
            break;

        case "imageurl":
            if (selectedNodeIndex == getNodeIndex(node))
            {
                if (getNodeAttribute(node, "selectedImageUrl") == null)
                    changeIcon(node, lname);
            }
            else if (node.getAttribute("Expanded") == true)
                changeIcon(node, "expandedimageurl");  // let changeIcon function figure things out
            else
                changeIcon(node, lname);
            break;
        case "selectedimageurl":          
            if (selectedNodeIndex == getNodeIndex(node))
                changeIcon(node, lname);
            break;
        case "expandedimageurl":
            if (node.getAttribute("Expanded") == true && (selectedNodeIndex != getNodeIndex(node) || getNodeAttribute(node, "selectedImageUrl") == null))
                changeIcon(node, lname);
            break;
            
        case "type":
            // the new type could contain a new childType, so rebuild the whole subtree
            buildTree(node, getNodeLevel(node));
            var temp = getNodeFromIndex(selectedNodeIndex);
            prop_selectedNodeIndex = "";
            selectNode(temp);
            break;
            
        case "childtype":
            var col = node.children.tags("treenode");
            for (i = 0; i < col.length; i++)
            {
                buildTree(col[i], getNodeLevel(col[i]));
                var temp = getNodeFromIndex(selectedNodeIndex);
                prop_selectedNodeIndex = "";
                selectNode(temp);
            }
            break;
            
        case "target":
            var accessnode = node.subtree.all("_tnaccess", 0);
            accessnode.target = getNodeAttribute(node, lname);
            accessnode.parentElement.target = accessnode.target;
            break;
        case "navigateurl":
            var accessnode = node.subtree.all("_tnaccess", 0);
            var url = getNodeAttribute(node, lname);
            if (url == "" || url == null)
            {
                accessnode.removeAttribute("href");
                accessnode.parentElement.removeAttribute("href");
                if (url == "")
                    node.removeAttribute("navigateUrl");
            }
            else
            {
                accessnode.href = getNodeAttribute(node, lname);
                accessnode.parentElement.href = accessnode.href;
            }
            break;
            
        case "expandable":
            if (verifyExpandableValue(value) == true)
                replaceJunctionNode(node);
            else
                node.setAttribute(lname, old, 0);
            break;
            
        case "expanded":
            if (verifyBooleanAttribute(node, lname) == false)
                node.setAttribute(lname, old, 0);
            else if (node.getAttribute(lname) != old)
            {
                node.setAttribute("expanded", !node.getAttribute("expanded"), 0);
                doNodePlusMinusClick(node);
            }
            break;
            
        case "checked":
            if (verifyBooleanAttribute(node, lname) == false)
                node.setAttribute(lname, old, 0);
            else if (getNodeAttribute(node, "checkBox") == true && node.getAttribute(lname) != old)
            {
                var cb = node.subtree.all.item("_cb", 0);
                cb.setAttribute("checked", node.getAttribute(lname), 0);
            }
            break;                
                
        case "checkbox":
            if (verifyBooleanAttribute(node, lname) == false && node.getAttribute(lname) != null)
                node.setAttribute(lname, old, 0);
            else if (getNodeAttribute(node, "checkbox") == true)
            {
                if (old != true)
                {
                    var jn = node.subtree.all("junction", 0);
                    if (jn)
                    {
                        var cb = createCheckBox(node);
                        jn.parentElement.insertAdjacentElement("afterEnd", cb);
                    }
                }
            }
            else
            {
                var cb = node.subtree.all("_fcb", 0);
                if (cb)
                    cb.removeNode(true);
            }
            break;
        
        case "treenodesrc":
        case "treenodexsltsrc":
            if (value != null)
            {
                node.setAttribute("checkedExpandable", false, 0);
                node._bound = null;
            }
            break;
        
        case "_showplus":   // not a real attribute-- back door for TreeView
            replaceJunctionNode(node);
            break;                      
            
        case "_indent":     // not a real attribute-- back door for TreeView
            var strIndex = getNodeIndex(node);
            if (strIndex.indexOf(".") != -1)
            {
                if (isRtl())
                    node.subtree.style.marginRight = prop_indent;
                else
                    node.subtree.style.marginLeft = prop_indent;
            }
            break;
            
        case "_nodetypeIndex": // not a real attribute-- back door for TreeView
            node.nodetypeIndex = undefined;
            node.inheritedType = undefined;
            break;
            
    }
}
            
//
// Cleans up the OnStop events left over from previous postbacks
//
function f_CleanupEvents()
{
    var eventArray = window.__treeviewAttachedEvents;

    if ((eventArray != null) && (eventArray[0]))
    {
        var newArray = new Array(false);

        // First array element is the dirty bit
        for (var i = 1; i < eventArray.length; i++)
        {
            if (element.document.all[eventArray[i][0]] == null)
            {
                element.document.detachEvent("onstop", eventArray[i][1]);
            }
            else
            {
                newArray = newArray.concat(new Array(eventArray[i]));
            }
        }

        window.__treeviewAttachedEvents = newArray;
    }
}

//
// Adds an OnStop event
//
function f_AddStopEvent()
{
    var eventArray = window.__treeviewAttachedEvents;
    if (eventArray == null)
    {
        eventArray = new Array(false);
    }

    element.document.attachEvent("onstop", onstop);
    eventArray[0] = true;
    entry = new Array(element.uniqueID, onstop);
    window.__treeviewAttachedEvents = eventArray.concat(new Array(entry));
}

//
// Responds to onscroll
//
function onScroll()
{
    setHiddenHelperValue();
}

//
// isRtl()
//
// true if we're rendering right to left; false otherwise
//
function isRtl()
{
    if (element.currentStyle.direction.toLowerCase() == "rtl" || element.dir.toLowerCase() == "rtl")
        return true;
    else
        return false;
}

//
// Visually refreshes the TreeView (workaround for IE 5.5 refresh bug)
//
function doVisualRefresh()
{
    var display = element.style.display;
    element.style.display = "none";
    element.style.display = display;
}

</script>
