//****************************************************************
// Keep this copyright notice:
// This copy of the script is the property of the owner of the
// particular web site you were visiting.
// Do not download the script's files from there.
// For a free download and full instructions go to:
// http://www.treeview.net
//****************************************************************


// Log of changes:
//
//      01 Mar 03 - VERSION 4.3 - Support for checkboxes
//      21 Feb 03 - Added support for Opera 7
//      22 Sep 02 - Added maySelect member for node-by-node control
//                  of selection and highlight
//      21 Sep 02 - Cookie values are now separated by cookieCutter
//      12 Sep 02 - VERSION 4.2 - Can highlight Selected Nodes and
//                  can preserve state through external (DB) IDs
//      29 Aug 02 - Fine tune 'supportDeferral' for IE4 and IE Mac
//      25 Aug 02 - Fixes: STARTALLOPEN, and multi-page frameless
//      09 Aug 02 - Fix repeated folder on Mozilla 1.x
//      31 Jul 02 - VERSION 4.1 - Dramatic speed increase for trees
//      with hundreds or thousands of nodes; changes to the control
//      flags of the gLnk function
//      18 Jul 02 - Changes in pre-load images function
//      13 Jun 02 - Add ICONPATH var to allow for gif subdir
//      20 Apr 02 - Improve support for frame-less layout
//      07 Apr 02 - Minor changes to support server-side dynamic feeding
//                  (example: FavoritesManagerASP)


// Definition of class Folder
// *****************************************************************
function Folder(folderDescription, hreference) //constructor
{
  //constant data
  this.desc = folderDescription;
  this.hreference = hreference;
  this.id = -1;
  this.navObj = 0;
  this.iconImg = 0;
  this.nodeImg = 0;
  this.isLastNode = 0;
  this.iconSrc = ICONPATH + "ftv2folderopen.gif";
  this.iconSrcClosed = ICONPATH + "ftv2folderclosed.gif";
  this.children = new Array;
  this.nChildren = 0;
  this.level = 0;
  this.leftSideCoded = "";
  this.isLastNode=false;
  this.parentObj = null;
  this.maySelect=true;
  this.prependHTML = ""

  //dynamic data
  this.isOpen = false
  this.isLastOpenedFolder = false
  this.isRendered = 0
  this.my_click=false

  //methods
  this.initialize = initializeFolder
  this.setState = setStateFolder
  this.addChild = addChild
  this.createIndex = createEntryIndex
  this.escondeBlock = escondeBlock
  this.esconde = escondeFolder
  this.folderMstr = folderMstr
  this.renderOb = drawFolder
  this.totalHeight = totalHeight
  this.subEntries = folderSubEntries
  this.linkHTML = linkFolderHTML
  this.blockStartHTML = blockStartHTML
  this.blockEndHTML = blockEndHTML
  this.nodeImageSrc = nodeImageSrc
  this.iconImageSrc = iconImageSrc
  this.getID = getID
  this.forceOpeningOfAncestorFolders = forceOpeningOfAncestorFolders
}

function initializeFolder(level, lastNode, leftSide)
{
  var j=0
  var i=0
  nc = this.nChildren

  this.createIndex()
  this.level = level
  this.leftSideCoded = leftSide

  if (browserVersion == 0 || STARTALLOPEN==1)
    this.isOpen=true;

  if (level>0)
    if (lastNode) //the last child in the children array
    leftSide = leftSide + "0"
  else
    leftSide = leftSide + "1"

  this.isLastNode = lastNode

  if (nc > 0)
  {
    level = level + 1
    for (i=0 ; i < this.nChildren; i++)
    {
      if (i == this.nChildren-1)
        this.children[i].initialize(level, 1, leftSide)
      else
        this.children[i].initialize(level, 0, leftSide)
    }
  }
}

function drawFolder(insertAtObj)
{
  var nodeName = ""
  var auxEv = ""
  var docW = ""

  var leftSide = leftSideHTML(this.leftSideCoded)

  if (browserVersion > 0)
    auxEv = "<a href='javascript:clickOnNode(\""+this.getID()+"\")'>"
  else
    auxEv = "<a>"

  nodeName = this.nodeImageSrc()

  if (this.level>0)
    if (this.isLastNode) //the last child in the children array
      leftSide = leftSide + "<td valign=top>" + auxEv + "<img name='nodeIcon" + this.id + "' id='nodeIcon" + this.id + "' src='" + nodeName + "' width=16 height=20 border=0></a></td>"
    else
      leftSide = leftSide + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif>" + auxEv + "<img name='nodeIcon" + this.id + "' id='nodeIcon" + this.id + "' src='" + nodeName + "' width=16 height=20 border=0></a></td>"

  this.isRendered = 1

  if (browserVersion == 2) {
    if (!doc.yPos)
      doc.yPos=20
  }

  docW = this.blockStartHTML("folder");

  docW = docW + "<tr>" + leftSide + "<td valign=top>";
  if (USEICONS)
  {
    docW = docW + this.linkHTML(false)
    docW = docW + "<img id='folderIcon" + this.id + "' name='folderIcon" + this.id + "' src='" + this.iconImageSrc() + "' border=0></a>"
  }
  else
  {
    if (this.prependHTML == "")
        docW = docW + "<img src=" + ICONPATH + "ftv2blank.gif height=2 width=2>"
  }
  if (WRAPTEXT)
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle width=100%>"
  else
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle nowrap width=100%>"
  if (USETEXTLINKS)
  {
    docW = docW + this.linkHTML(true)
    docW = docW + this.desc + "</a>"
  }
  else
    docW = docW + this.desc
  docW = docW + "</td>"

  docW = docW + this.blockEndHTML()

  if (insertAtObj == null)
  {
    if (supportsDeferral) {
      doc.write("<div id=domRoot></div>") //transition between regular flow HTML, and node-insert DOM DHTML
      insertAtObj = getElById("domRoot")
      insertAtObj.insertAdjacentHTML("beforeEnd", docW)
    }
    else
      doc.write(docW)
  }
  else
  {
      insertAtObj.insertAdjacentHTML("afterEnd", docW)
  }

  if (browserVersion == 2)
  {
    this.navObj = doc.layers["folder"+this.id]
    if (USEICONS)
      this.iconImg = this.navObj.document.images["folderIcon"+this.id]
    this.nodeImg = this.navObj.document.images["nodeIcon"+this.id]
    doc.yPos=doc.yPos+this.navObj.clip.height
  }
  else if (browserVersion != 0)
  {
    this.navObj = getElById("folder"+this.id)
    if (USEICONS)
      this.iconImg = getElById("folderIcon"+this.id)
    this.nodeImg = getElById("nodeIcon"+this.id)
  }
}

function setStateFolder(isOpen)
{
  var subEntries
  var totalHeight
  var fIt = 0
  var i=0
  var currentOpen

  if (isOpen == this.isOpen)
    return

  if (browserVersion == 2)
  {
    totalHeight = 0
    for (i=0; i < this.nChildren; i++)
      totalHeight = totalHeight + this.children[i].navObj.clip.height
      subEntries = this.subEntries()
    if (this.isOpen)
      totalHeight = 0 - totalHeight
    for (fIt = this.id + subEntries + 1; fIt < nEntries; fIt++)
      indexOfEntries[fIt].navObj.moveBy(0, totalHeight)
  }
  this.isOpen = isOpen;

  if (this.getID()!=foldersTree.getID() && PERSERVESTATE && !this.isOpen) //closing
  {
     currentOpen = GetCookie("clickedFolder")
     if (currentOpen != null) {
         currentOpen = currentOpen.replace(this.getID()+cookieCutter, "")
         SetCookie("clickedFolder", currentOpen)
     }
  }

  if (!this.isOpen && this.isLastOpenedfolder)
  {
    lastOpenedFolder = null;
    this.isLastOpenedfolder = false;
  }
  propagateChangesInState(this)
}

function propagateChangesInState(folder)
{
  var i=0

  //Change icon
  if (folder.nChildren > 0 && folder.level>0)  //otherwise the one given at render stays
    folder.nodeImg.src = folder.nodeImageSrc()

  //Change node
  if (USEICONS)
    folder.iconImg.src = folder.iconImageSrc()

  //Propagate changes
  for (i=folder.nChildren-1; i>=0; i--)
    if (folder.isOpen)
      folder.children[i].folderMstr(folder.navObj)
    else
      folder.children[i].esconde()
}

function escondeFolder()
{
  this.escondeBlock()

  this.setState(0)
}

function linkFolderHTML(isTextLink)
{
  var docW = "";

  if (this.hreference)
  {
  if (USEFRAMES)
    docW = docW + "<a href='" + this.hreference + "' TARGET=\"basefrm\" "
  else
    docW = docW + "<a href='" + this.hreference + "' TARGET=_top "

    if (isTextLink) {
        docW += "id=\"itemTextLink"+this.id+"\" ";
    }

    if (browserVersion > 0)
      docW = docW + "onClick='javascript:clickOnFolder(\""+this.getID()+"\")'"

    docW = docW + ">"
  }
  else
    docW = docW + "<a>"

  return docW;
}

function addChild(childNode)
{
  this.children[this.nChildren] = childNode
  childNode.parentObj = this
  this.nChildren++
  return childNode
}

function folderSubEntries()
{
  var i = 0
  var se = this.nChildren

  for (i=0; i < this.nChildren; i++){
    if (this.children[i].children) //is a folder
      se = se + this.children[i].subEntries()
  }

  return se
}

function nodeImageSrc() {
  var srcStr = "";

  if (this.isLastNode) //the last child in the children array
  {
    if (this.nChildren == 0)
      srcStr = ICONPATH + "ftv2lastnode.gif"
    else
      if (this.isOpen)
        srcStr = ICONPATH + "ftv2mlastnode.gif"
      else
        srcStr = ICONPATH + "ftv2plastnode.gif"
  }
  else
  {
    if (this.nChildren == 0)
      srcStr = ICONPATH + "ftv2node.gif"
    else
      if (this.isOpen)
        srcStr = ICONPATH + "ftv2mnode.gif"
      else
        srcStr = ICONPATH + "ftv2pnode.gif"
  }
  return srcStr;
}

function iconImageSrc() {
  if (this.isOpen)
    return(this.iconSrc)
  else
    return(this.iconSrcClosed)
}

// Definition of class Item (a document or link inside a Folder)
// *************************************************************

function Item(itemDescription, itemLink, target) // Constructor
{
  // constant data
  this.desc = itemDescription
  this.link = itemLink
  this.id = -1 //initialized in initalize()
  this.navObj = 0 //initialized in render()
  this.iconImg = 0 //initialized in render()
  this.iconSrc = ICONPATH + "ftv2doc.gif"
  this.isRendered = 0
  this.isLastNode = false
  this.level = 0
  this.leftSideCoded = ""
  this.nChildren = 0
  this.target = target
  this.parentObj = null
  this.maySelect=true
  this.prependHTML = ""

  // methods
  this.initialize = initializeItem
  this.createIndex = createEntryIndex
  this.escondeBlock = escondeBlock
  this.esconde = escondeBlock
  this.folderMstr = folderMstr
  this.renderOb = drawItem
  this.totalHeight = totalHeight
  this.blockStartHTML = blockStartHTML
  this.blockEndHTML = blockEndHTML
  this.getID = getID
  this.forceOpeningOfAncestorFolders = forceOpeningOfAncestorFolders
}

function initializeItem(level, lastNode, leftSide)
{
  this.createIndex()
  this.level = level
  this.leftSideCoded = leftSide
  this.isLastNode = lastNode
}

function drawItem(insertAtObj)
{
  var leftSide = leftSideHTML(this.leftSideCoded)
  var docW = ""

  var fullLink = "href=\""+this.link+"\" target=\""+this.target+"\" onClick=\"clickOnLink('"+this.getID()+"\', '"+this.link+"','"+this.target+"');return false;\"";
  this.isRendered = 1

  if (this.level>0)
    if (this.isLastNode) //the last 'brother' in the children array
    {
      leftSide = leftSide + "<td valign=top><img src='" + ICONPATH + "ftv2lastnode.gif' width=16 height=20></td>"
    }
    else
    {
      leftSide = leftSide + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif><img src='" + ICONPATH + "ftv2node.gif' width=16 height=20></td>"
    }

  docW = docW + this.blockStartHTML("item")

  docW = docW + "<tr>" + leftSide + "<td valign=top>"
  if (USEICONS)
      docW = docW + "<a " + fullLink  + " id=\"itemIconLink"+this.id+"\">" + "<img id='itemIcon"+this.id+"' " + "src='"+this.iconSrc+"' border=0>" + "</a>"
  else
    if (this.prependHTML == "")
        docW = docW + "<img src=" + ICONPATH + "ftv2blank.gif height=2 width=3>"

  if (WRAPTEXT)
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle width=100%>"
  else
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle nowrap width=100%>"

  if (USETEXTLINKS)
    docW = docW + "<a " + fullLink + " id=\"itemTextLink"+this.id+"\">" + this.desc + "</a>"
  else
    docW = docW + this.desc

  docW = docW + "</td>"

  docW = docW + this.blockEndHTML()

  if (insertAtObj == null)
  {
    doc.write(docW)
  }
  else
  {
      insertAtObj.insertAdjacentHTML("afterEnd", docW)
  }

  if (browserVersion == 2) {
    this.navObj = doc.layers["item"+this.id]
    if (USEICONS)
      this.iconImg = this.navObj.document.images["itemIcon"+this.id]
    doc.yPos=doc.yPos+this.navObj.clip.height
  } else if (browserVersion != 0) {
    this.navObj = getElById("item"+this.id)
    if (USEICONS)
      this.iconImg = getElById("itemIcon"+this.id)
  }
}


// Methods common to both objects (pseudo-inheritance)
// ********************************************************

function forceOpeningOfAncestorFolders() {
  if (this.parentObj == null || this.parentObj.isOpen)
    return
  else {
    this.parentObj.forceOpeningOfAncestorFolders()
    clickOnNodeObj(this.parentObj)
  }
}

function escondeBlock()
{
  if (browserVersion == 1 || browserVersion == 3) {
    if (this.navObj.style.display == "none")
      return
    this.navObj.style.display = "none"
  } else {
    if (this.navObj.visibility == "hiden")
      return
    this.navObj.visibility = "hiden"
  }
}

function folderMstr(domObj)
{
  if (browserVersion == 1 || browserVersion == 3) {
    //if (t==-1)
    //  return
    var str = new String(doc.links[t])
    //if (str.slice(14,16) != "em")
    //  return
  }

  if (!this.isRendered)
     this.renderOb(domObj)
  else
    if (browserVersion == 1 || browserVersion == 3)
      this.navObj.style.display = "block"
    else
      this.navObj.visibility = "show"
}

function blockStartHTML(idprefix) {
  var idParam = "id='" + idprefix + this.id + "'"
  var docW = ""

  if (browserVersion == 2)
    docW = "<layer "+ idParam + " top=" + doc.yPos + " visibility=show>"
  else if (browserVersion != 0)
    docW = "<div " + idParam + " style='display:block; position:block;'>"

  docW = docW + "<table border=0 cellspacing=0 cellpadding=0 width=100% >"

  return docW
}

function blockEndHTML() {
  var docW = ""

  docW = "</table>"

  if (browserVersion == 2)
    docW = docW + "</layer>"
  else if (browserVersion != 0)
    docW = docW + "</div>"

  return docW
}

function createEntryIndex()
{
  this.id = nEntries
  indexOfEntries[nEntries] = this
  nEntries++
}

// total height of subEntries open
function totalHeight() //used with browserVersion == 2
{
  var h = this.navObj.clip.height
  var i = 0

  if (this.isOpen) //is a folder and _is_ open
    for (i=0 ; i < this.nChildren; i++)
      h = h + this.children[i].totalHeight()

  return h
}


function leftSideHTML(leftSideCoded) {
  var i;
  var retStr = "";

  for (i=0; i<leftSideCoded.length; i++)
  {
    if (leftSideCoded.charAt(i) == "1")
    {
      retStr = retStr + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif><img src='" + ICONPATH + "ftv2vertline.gif' width=16 height=20></td>"
    }
    if (leftSideCoded.charAt(i) == "0")
    {
      retStr = retStr + "<td valign=top><img src='" + ICONPATH + "ftv2blank.gif' width=16 height=20></td>"
    }
  }
  return retStr
}

function getID()
{
  //define a .xID in all nodes (folders and items) if you want to PERVESTATE that
  //work when the tree changes. The value eXternal value must be unique for each
  //node and must node change when other nodes are added or removed
  //The value may be numeric or string, but cannot have the same char used in cookieCutter
  if (typeof this.xID != "undefined")
    return this.xID
  else
    return this.id
}


// Events
// *********************************************************

function clickOnFolder(folderId)
{
    var clicked = findObj(folderId)

    if (!clicked.isOpen) {
      clickOnNodeObj(clicked)
    }

    if (lastOpenedFolder != null && lastOpenedFolder != folderId)
      clickOnNode(lastOpenedFolder); //sets lastOpenedFolder to null

    if (clicked.nChildren==0) {
      lastOpenedFolder = folderId;
      clicked.isLastOpenedfolder = true
    }

    if (isLinked(clicked.hreference)) {
        highlightObjLink(clicked);
    }
}

function clickOnNode(folderId)
{
  clickOnNodeObj(findObj(folderId))
}

function clickOnNodeObj(folderObj)
{
  var state = 0
  var currentOpen

  state = folderObj.isOpen
  folderObj.setState(!state) //open<->close

  if (folderObj.id!=foldersTree.id && PERSERVESTATE)
  {
    currentOpen = GetCookie("clickedFolder")
    if (currentOpen == null)
      currentOpen = ""

    if (!folderObj.isOpen) //closing
    {
      currentOpen = currentOpen.replace(folderObj.getID()+cookieCutter, "")
      SetCookie("clickedFolder", currentOpen)
    }
    else
      SetCookie("clickedFolder", currentOpen+folderObj.getID()+cookieCutter)
  }
}

function clickOnLink(clickedId, target, windowName) {
    highlightObjLink(findObj(clickedId));
    if (isLinked(target)) {
        window.open(target,windowName);
    }
}

function ld  ()
{
  return document.links.length-1;
}


// Auxiliary Functions
// *******************

function findObj(id)
{
  var i=0;
  var nodeObj;
  if (typeof foldersTree.xID != "undefined") {
    nodeObj = indexOfEntries[i];
    for(i=0;i<nEntries&&indexOfEntries[i].xID!=id;i++) //may need optimization
      ;
    id = i
  }
  if (id >= nEntries)
    return null; //example: node removed in DB
  else
    return indexOfEntries[id];
}

function isLinked(hrefText) {
    var result = true;
    result = (result && hrefText !=null);
    result = (result && hrefText != '');
    result = (result && hrefText.indexOf('undefined') < 0);
    result = (result && hrefText.indexOf('parent.op') < 0);
    return result;
}

// Do highlighting by changing background and foreg. colors of folder or doc text
function highlightObjLink(nodeObj) {
  if (!HIGHLIGHT || nodeObj==null || nodeObj.maySelect==false) {//node deleted in DB
    return;
  }

  if (browserVersion == 1 || browserVersion == 3) {
    var clickedDOMObj = getElById('itemTextLink'+nodeObj.id);
    if (clickedDOMObj != null) {
        if (lastClicked != null) {
            var prevClickedDOMObj = getElById('itemTextLink'+lastClicked.id);
            prevClickedDOMObj.style.color=lastClickedColor;
            prevClickedDOMObj.style.backgroundColor=lastClickedBgColor;
        }

        lastClickedColor    = clickedDOMObj.style.color;
        lastClickedBgColor  = clickedDOMObj.style.backgroundColor;
        clickedDOMObj.style.color=HIGHLIGHT_COLOR;
        clickedDOMObj.style.backgroundColor=HIGHLIGHT_BG;
    }
  }
  lastClicked = nodeObj;
  if (PERSERVESTATE)
    SetCookie('highlightedTreeviewLink', nodeObj.getID());
}

function gFld(description, hreference)
{
  folder = new Folder(description, hreference);
  return folder;
}

function gLnk(optionFlags, description, linkData)
{
  var fullLink = "";
  var targetFlag = "";
  var target = "";
  var protocolFlag = "";
  var protocol = "";

  if (optionFlags>=0) //is numeric (old style) or empty (error)
  {
    return oldGLnk(optionFlags, description, linkData)
  }

  targetFlag = optionFlags.charAt(0)
  if (targetFlag=="B")
    target = "_blank"
  if (targetFlag=="P")
    target = "_parent"
  if (targetFlag=="R")
    target = "mainframe"
  if (targetFlag=="S")
    target = "_self"
  if (targetFlag=="T")
    target = "_top"

  if (optionFlags.length > 1) {
    protocolFlag = optionFlags.charAt(1)
    if (protocolFlag=="h")
      protocol = "http://"
    if (protocolFlag=="s")
      protocol = "https://"
    if (protocolFlag=="f")
      protocol = "ftp://"
    if (protocolFlag=="m")
      protocol = "mailto:"
  }

  fullLink = "'" + protocol + linkData + "' target=" + target

  linkItem = new Item(description, protocol+linkData, target)
  return linkItem
}

//Function created Aug 1, 2002 for backwards compatibility purposes
function oldGLnk(target, description, linkData)
{
  var fullLink = "";
  //Backwards compatibility code
  if (USEFRAMES)
  {
    if (target==0)
    {
    fullLink = "'"+linkData+"' target=\"basefrm\""
    }
    else
    {
    if (target==1)
       fullLink = "'http://"+linkData+"' target=_blank"
    else
       if (target==2)
        fullLink = "'http://"+linkData+"' target=\"basefrm\""
       else
        fullLink = linkData+" target=\"_top\""
    }
  }
  else
  {
    if (target==0)
    {
    fullLink = "'"+linkData+"' target=_top"
    }
    else
    {
    if (target==1)
       fullLink = "'http://"+linkData+"' target=_blank"
    else
       fullLink = "'http://"+linkData+"' target=_top"
    }
  }

  linkItem = new Item(description, fullLink)
  return linkItem
}

function insFld(parentFolder, childFolder)
{
  return parentFolder.addChild(childFolder)
}

function insDoc(parentFolder, document)
{
  return parentFolder.addChild(document)
}

function preLoadIcons() {
  var auxImg
  auxImg = new Image();
  auxImg.src = ICONPATH + "ftv2vertline.gif";
  auxImg.src = ICONPATH + "ftv2mlastnode.gif";
  auxImg.src = ICONPATH + "ftv2mnode.gif";
  auxImg.src = ICONPATH + "ftv2plastnode.gif";
  auxImg.src = ICONPATH + "ftv2pnode.gif";
  auxImg.src = ICONPATH + "ftv2blank.gif";
  auxImg.src = ICONPATH + "ftv2lastnode.gif";
  auxImg.src = ICONPATH + "ftv2node.gif";
  auxImg.src = ICONPATH + "ftv2folderclosed.gif";
  auxImg.src = ICONPATH + "ftv2folderopen.gif";
  auxImg.src = ICONPATH + "ftv2doc.gif";
}

//Open some folders for initial layout, if necessary
function setInitialLayout() {
  if (browserVersion > 0 && !STARTALLOPEN)
    clickOnNodeObj(foldersTree);

  if (!STARTALLOPEN && (browserVersion > 0) && PERSERVESTATE)
    PersistentFolderOpening();
}

//Used with NS4 and STARTALLOPEN
function renderAllTree(nodeObj, parent) {
  var i=0;
  nodeObj.renderOb(parent)
  if (supportsDeferral)
    for (i=nodeObj.nChildren-1; i>=0; i--)
      renderAllTree(nodeObj.children[i], nodeObj.navObj)
  else
    for (i=0 ; i < nodeObj.nChildren; i++)
      renderAllTree(nodeObj.children[i], null)
}

function hideWholeTree(nodeObj, hideThisOne, nodeObjMove) {
  var i=0;
  var heightContained=0;
  var childrenMove=nodeObjMove;

  if (hideThisOne)
    nodeObj.escondeBlock()

  if (browserVersion == 2)
    nodeObj.navObj.moveBy(0, 0-nodeObjMove)

  for (i=0 ; i < nodeObj.nChildren; i++) {
    heightContainedInChild = hideWholeTree(nodeObj.children[i], true, childrenMove)
    if (browserVersion == 2) {
      heightContained = heightContained + heightContainedInChild + nodeObj.children[i].navObj.clip.height
      childrenMove = childrenMove + heightContainedInChild
  }
  }

  return heightContained;
}


// Simulating inserAdjacentHTML on NS6
// Code by thor@jscript.dk
// ******************************************

if(typeof HTMLElement!="undefined" && !HTMLElement.prototype.insertAdjacentElement){
  HTMLElement.prototype.insertAdjacentElement = function (where,parsedNode)
  {
    switch (where){
    case 'beforeBegin':
      this.parentNode.insertBefore(parsedNode,this)
      break;
    case 'afterBegin':
      this.insertBefore(parsedNode,this.firstChild);
      break;
    case 'beforeEnd':
      this.appendChild(parsedNode);
      break;
    case 'afterEnd':
      if (this.nextSibling)
        this.parentNode.insertBefore(parsedNode,this.nextSibling);
      else this.parentNode.appendChild(parsedNode);
      break;
    }
  }

  HTMLElement.prototype.insertAdjacentHTML = function(where,htmlStr)
  {
    var r = this.ownerDocument.createRange();
    r.setStartBefore(this);
    var parsedHTML = r.createContextualFragment(htmlStr);
    this.insertAdjacentElement(where,parsedHTML)
  }
}

function getElById(idVal) {
  if (document.getElementById != null)
    return document.getElementById(idVal)
  if (document.all != null)
    return document.all[idVal]

  //alert("Problem getting element by id")
  return null
}


// Functions for cookies
// Note: THESE FUNCTIONS ARE OPTIONAL. No cookies are used unless
// the PERSERVESTATE variable is set to 1 (default 0)
// The separator currently in use is ^ (chr 94)
// ***********************************************************

function PersistentFolderOpening()
{
  var stateInCookie;
  var fldStr=""
  var fldArr
  var fldPos=0
  var id
  var nodeObj
  stateInCookie = GetCookie("clickedFolder");
  SetCookie('clickedFolder', "") //at the end of function it will be back, minus null cases

  if(stateInCookie!=null)
  {
    fldArr = stateInCookie.split(cookieCutter)
    for (fldPos=0; fldPos<fldArr.length; fldPos++)
    {
      fldStr=fldArr[fldPos]
      if (fldStr != "") {
        nodeObj = findObj(fldStr)
        if (nodeObj!=null) //may have been deleted
          if (nodeObj.setState) {
            nodeObj.forceOpeningOfAncestorFolders()
            clickOnNodeObj(nodeObj);
          }
          else ;
            //alert("Internal id is not pointing to a folder anymore. Consider using external IDs")
      }
    }
  }
}

function storeAllNodesInClickCookie(treeNodeObj)
{
  var currentOpen
  var i = 0

  if (typeof treeNodeObj.setState != "undefined") //is folder
  {
    currentOpen = GetCookie("clickedFolder")
    if (currentOpen == null)
      currentOpen = ""

    if (treeNodeObj.getID() != foldersTree.getID())
      SetCookie("clickedFolder", currentOpen+treeNodeObj.getID()+cookieCutter)

    for (i=0; i < treeNodeObj.nChildren; i++)
        storeAllNodesInClickCookie(treeNodeObj.children[i])
  }
}

function CookieBranding(name) {
  if (typeof foldersTree.treeID != "undefined")
    return name+foldersTree.treeID //needed for multi-tree sites. make sure treeId does not contain cookieCutter
  else
    return name
}

function GetCookie(name)
{
  name = CookieBranding(name)

  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;

  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function SetCookie(name, value)
{
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  //var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  var path = "/"; //allows the tree to remain open across pages with diff names & paths

  name = CookieBranding(name)

  document.cookie = name + "=" + escape (value) +
  ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
  ((path == null) ? "" : ("; path=" + path)) +
  ((domain == null) ? "" : ("; domain=" + domain)) +
  ((secure == true) ? "; secure" : "");
}

function ExpireCookie (name)
{
  var exp = new Date();
  exp.setTime (exp.getTime() - 1);
  var cval = GetCookie (name);
  name = CookieBranding(name)
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}


//To customize the tree, overwrite these variables in the configuration file (demoFramesetNode.js, etc.)
var USETEXTLINKS = 0
var STARTALLOPEN = 0
var USEFRAMES = 1
var USEICONS = 1
var WRAPTEXT = 0
var PERSERVESTATE = 0
var ICONPATH = './img/'
var HIGHLIGHT = 0
var HIGHLIGHT_COLOR = 'white';
var HIGHLIGHT_BG    = 'blue';
var BUILDALL = 0


//Other variables
var lastClicked = null;
var lastClickedColor;
var lastClickedBgColor;
var indexOfEntries = new Array
var nEntries = 0
var browserVersion = 0
var selectedFolder=0
var lastOpenedFolder=null
var t=5
var doc = document
var supportsDeferral = false
var cookieCutter = '^' //You can change this if you need to use ^ in your xID or treeID values

doc.yPos = 0

// Main function
// *************

// This function uses an object (navigator) defined in
// ua.js, imported in the main html page (left frame).
function initializeDocument()
{
  preLoadIcons()
  switch(navigator.family)
  {
    case 'ie4':
      browserVersion = 1 //Simply means IE > 3.x
      break;
    case 'opera':
      browserVersion = (navigator.version > 6 ? 1 : 0); //opera7 has a good DOM
      break;
    case 'nn4':
      browserVersion = 2 //NS4.x
      break;
    case 'gecko':
      browserVersion = 3 //NS6.x
      break;
  default:
      browserVersion = 0 //other, possibly without DHTML
      break;
  }

  supportsDeferral = ((browserVersion == 1 && navigator.version >= 5 && navigator.OS != "mac") || browserVersion == 3);
  supportsDeferral = supportsDeferral & (!BUILDALL)
  if (!USEFRAMES && browserVersion == 2)
    browserVersion = 0;
  //eval(String.fromCharCode(116,61,108,100,40,41))
//  alert(String.fromCharCode(116,61,108,100,40,41))
//  t=0

  //If PERSERVESTATE is on, STARTALLOPEN can only be effective the first time the page
  //loads during the session. For subsequent (re)loads the PERSERVESTATE data stored
  //in cookies takes over the control of the initial expand/collapse
  if (PERSERVESTATE && GetCookie("clickedFolder") != null)
    STARTALLOPEN = 0

  //foldersTree (with the site's data) is created in an external .js (demoFramesetNode.js, for example)
  foldersTree.initialize(0, true, "")
  if (supportsDeferral && !STARTALLOPEN)
    foldersTree.renderOb(null) //delay construction of nodes
  else {
    renderAllTree(foldersTree, null);

    if (PERSERVESTATE && STARTALLOPEN)
      storeAllNodesInClickCookie(foldersTree)

    //To force the scrollable area to be big enough
    if (browserVersion == 2)
      doc.write("<layer top=" + indexOfEntries[nEntries-1].navObj.top + ">&nbsp;</layer>")

    if (browserVersion != 0 && !STARTALLOPEN)
      hideWholeTree(foldersTree, false, 0)
  }

  setInitialLayout()

  if (PERSERVESTATE && GetCookie('highlightedTreeviewLink')!=null  && GetCookie('highlightedTreeviewLink')!="") {
    var nodeObj = findObj(GetCookie('highlightedTreeviewLink'))
    if (nodeObj!=null){
      nodeObj.forceOpeningOfAncestorFolders()
      highlightObjLink(nodeObj);
    }
    else
      SetCookie('highlightedTreeviewLink', '')
  }

}