//**************************************************************** 
// You must keep this copyright notice:
//
// This script is Copyright (c) 2006 by Conor O'Mahony.
// For inquiries, please email GubuSoft@GubuSoft.com.
// GubuSoft is owned and operated by Conor O'Mahony.
// Original author of TreeView script is Marcelino Martins.
//
// Do not download the script's files from here.  For a free 
// download and full instructions go to the following site: 
// http://www.TreeView.net
//**************************************************************** 

// Log of changes: 
//      26 Sep 06 - Updated preLoadIcons function;
//                  Fix small bugs or typos (in the Folder, InitializeFolder,
//                  and blockStartHTML functions)
//      14 Feb 06 - Re-brand as GubuSoft
//      08 Jun 04 - Very small change to one error message
//      21 Mar 04 - Support for folder.addChildren allows for much bigger trees
//      12 May 03 - Support for Safari Beta 3
//      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.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;
 
  //methods 
  this.initialize = initializeFolder;
  this.setState = setStateFolder;
  this.addChild = addChild;
  this.addChildren = addChildren;
  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 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++;
    for (i=0 ; i < this.nChildren; i++) {
      if (typeof this.children[i].initialize == 'undefined') {	//document node was specified using the addChildren function
        if (typeof this.children[i][0] == 'undefined' || typeof this.children[i] == 'string')
          this.children[i] = ["item incorrectly defined", ""];

        //Basic initialization of the Item object
        //These members or methods are needed even before the Item is rendered
        this.children[i].initialize=initializeItem;
        this.children[i].createIndex=createEntryIndex;
        if (typeof this.children[i].maySelect == 'undefined')
          this.children[i].maySelect=true;
        this.children[i].forceOpeningOfAncestorFolders = forceOpeningOfAncestorFolders;
      }
      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 i = 0;

  finalizeCreationOfChildDocs(this);

  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=22 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=22 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() && PRESERVESTATE && !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;
} 

//The list can contain either a Folder object or a sub list with the arguments for Item 
function addChildren(listOfChildren)
{
  this.children = listOfChildren;
  this.nChildren = listOfChildren.length;
  for (i=0; i<this.nChildren; i++)
    this.children[i].parentObj = this;
}

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) // Constructor 
{
  // constant data
  this.desc = itemDescription;

  this.level = 0;
  this.isLastNode = false;
  this.leftSideCoded = "";
  this.parentObj = null;

  this.maySelect = true;

  this.initialize = initializeItem;
  this.createIndex = createEntryIndex;
  this.forceOpeningOfAncestorFolders = forceOpeningOfAncestorFolders;

  finalizeCreationOfItem(this);
} 

//Assignments that can be delayed when the item is created with folder.addChildren
//The assignments that cannot be delayed are done in addChildren and in initializeFolder
//Additionaly, some assignments are also done in finalizeCreationOfChildDocs itself
function finalizeCreationOfItem(itemArray)
{
  itemArray.navObj = 0; //initialized in render() 
  itemArray.iconImg = 0; //initialized in render() 
  itemArray.iconSrc = ICONPATH + "ftv2doc.gif";
  itemArray.isRendered = 0;
  itemArray.nChildren = 0;
  itemArray.prependHTML = "";
 
  // methods 
  itemArray.escondeBlock = escondeBlock;
  itemArray.esconde = escondeBlock;
  itemArray.folderMstr = folderMstr;
  itemArray.renderOb = drawItem;
  itemArray.totalHeight = totalHeight;
  itemArray.blockStartHTML = blockStartHTML;
  itemArray.blockEndHTML = blockEndHTML;
  itemArray.getID = getID;
}

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=22></td>";
    else 
      leftSide = leftSide + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif><img src='" + ICONPATH + "ftv2node.gif' width=16 height=22></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 == "hidden")
      return;
    this.navObj.visibility = "hidden";
  }     
} 
 
function folderMstr(domObj)
{
  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;'>";
     
  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=22></td>"
    }
    if (leftSideCoded.charAt(i) == "0")	{
      retStr = retStr + "<td valign=top><img src='" + ICONPATH + "ftv2blank.gif' width=16 height=22></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 (typeof clicked=='undefined' || clicked==null) {
    alert("Treeview was not able to find the node object corresponding to ID=" + folderId + ". If the configuration file sets a.xID values, it must set them for ALL nodes, including the foldersTree root.");
    return;
  }

  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) 
{ 
  fOb = findObj(folderId);
  if (typeof fOb=='undefined' || fOb==null)
  {
    alert("Treeview was not able to find the node object corresponding to ID=" + folderId + ". If the configuration file sets a.xID, it must set foldersTree.xID as well.")
    return;
  }

  clickOnNodeObj(fOb);
}

function clickOnNodeObj(folderObj) 
{ 
  var state = 0;
  var currentOpen;
 
  state = folderObj.isOpen;
  folderObj.setState(!state); //open<->close  

  if (folderObj.id!=foldersTree.id && PRESERVESTATE) {
    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 finalizeCreationOfChildDocs(folderObj)
{
  for (i=0; i < folderObj.nChildren; i++) {
    child = folderObj.children[i];
    if (typeof child[0] != 'undefined') {
      // Amazingly, arrays can have members, so   a = ["a", "b"]; a.desc="asdas"   works
      // If a doc was inserted as an array, we can transform it into an itemObj by adding 
      // the missing members and functions
      child.desc = child[0];
      setItemLink(child, GLOBALTARGET, child[1]);
      finalizeCreationOfItem(child);
    }
  }
}

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 (PRESERVESTATE)
    SetCookie('highlightedTreeviewLink', nodeObj.getID());
}

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

function gFld(description, hreference) 
{ 
  folder = new Folder(description, hreference);
  return folder;
} 
 
function gLnk(optionFlags, description, linkData) 
{ 
  if (optionFlags>=0) { //is numeric (old style) or empty (error)
    //Target changed from numeric to string in Aug 2002, and support for numeric style was entirely dropped in Mar 2004
    alert("Change your Treeview configuration file to use the new style of target argument in gLnk");
    return;
  }

  newItem = new Item(description);
  setItemLink(newItem, optionFlags, linkData);
  return newItem;
} 

function setItemLink(item, optionFlags, linkData)
{
  var targetFlag = "";
  var target = "";
  var protocolFlag = "";
  var protocol = "";

  targetFlag = optionFlags.charAt(0);
  if (targetFlag=="B")
    target = "_blank";
  if (targetFlag=="P")
    target = "_parent";
  if (targetFlag=="R")
    target = "basefrm";
  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:";
  }

  item.link = protocol+linkData;    
  item.target = target
}

//Function created  for backwards compatibility purposes
//Function contents voided in March 2004
function oldGLnk(target, description, linkData)
{
}
 
function preLoadIcons()
{
 arImageSrc = new Array (
     "ftv2vertline.gif",
     "ftv2mlastnode.gif",
     "ftv2mnode.gif",
     "ftv2plastnode.gif",
     "ftv2pnode.gif",
     "ftv2blank.gif",
     "ftv2lastnode.gif",
     "ftv2node.gif",
     "ftv2folderclosed.gif",
     "ftv2folderopen.gif",
     "ftv2doc.gif"
     );
 arImageList = new Array ();
 for (counter in arImageSrc) {
     arImageList[counter] = new Image();
     arImageList[counter].src = ICONPATH + arImageSrc[counter];
 }
}

//Open some folders for initial layout, if necessary
function setInitialLayout()
{
  if (browserVersion > 0 && !STARTALLOPEN)
    clickOnNodeObj(foldersTree);
  
  if (!STARTALLOPEN && (browserVersion > 0) && PRESERVESTATE)
    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 PRESERVESTATE 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.\nConsider giving an ID to the tree and external IDs to the individual nodes.");
      }
    }
  }
}

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; //backward compatibility
var PRESERVESTATE = 0;
var ICONPATH = '';
var HIGHLIGHT = 0;
var HIGHLIGHT_COLOR = 'white';
var HIGHLIGHT_BG    = 'blue';
var BUILDALL = 0;
var GLOBALTARGET = "R"; // variable only applicable for addChildren uses


//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;
    case 'safari':
      browserVersion = 1; //Safari Beta 3 seems to behave like IE in spite of being based on Konkeror
      break;
    default:
      browserVersion = 0; //other, possibly without DHTML  
      break;
  }

  // backward compatibility
  if (PERSERVESTATE)
    PRESERVESTATE = 1;

  supportsDeferral = ((navigator.family=='ie4' && navigator.version >= 5 && navigator.OS != "mac") || browserVersion == 3);
  supportsDeferral = supportsDeferral & (!BUILDALL);
  if (!USEFRAMES && browserVersion == 2)
    browserVersion = 0;

  //If PRESERVESTATE is on, STARTALLOPEN can only be effective the first time the page 
  //loads during the session. For subsequent (re)loads the PRESERVESTATE data stored 
  //in cookies takes over the control of the initial expand/collapse
  if (PRESERVESTATE && 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 (PRESERVESTATE && 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 (PRESERVESTATE && GetCookie('highlightedTreeviewLink')!=null  && GetCookie('highlightedTreeviewLink')!="") {
    var nodeObj = findObj(GetCookie('highlightedTreeviewLink'));
    if (nodeObj!=null){
      nodeObj.forceOpeningOfAncestorFolders();
      highlightObjLink(nodeObj);
    }
    else
      SetCookie('highlightedTreeviewLink', '');
  }
} 

function xbDetectBrowser()
{
  var oldOnError = window.onerror;
  var element = null;

  window.onerror = null;
  
  // work around bug in xpcdom Mozilla 0.9.1
  window.saveNavigator = window.navigator;

  navigator.OS    = '';
  navigator.version  = parseFloat(navigator.appVersion);
  navigator.org    = '';
  navigator.family  = '';

  var platform;
  if (typeof(window.navigator.platform) != 'undefined') {
    platform = window.navigator.platform.toLowerCase();
    if (platform.indexOf('win') != -1)
      navigator.OS = 'win';
    else if (platform.indexOf('mac') != -1)
      navigator.OS = 'mac';
    else if (platform.indexOf('unix') != -1 || platform.indexOf('linux') != -1 || platform.indexOf('sun') != -1)
      navigator.OS = 'nix';
  }

  var i = 0;
  var ua = window.navigator.userAgent.toLowerCase();
  
  if (ua.indexOf('safari') != -1) {
    i = ua.indexOf('safari');
    navigator.family = 'safari';
    navigator.org = 'safari';
    navigator.version = parseFloat('0' + ua.substr(i+7), 10);
  }
  else if (ua.indexOf('opera') != -1) {
    i = ua.indexOf('opera');
    navigator.family  = 'opera';
    navigator.org    = 'opera';
    navigator.version  = parseFloat('0' + ua.substr(i+6), 10);
  }
  else if ((i = ua.indexOf('msie')) != -1) {
    navigator.org    = 'microsoft';
    navigator.version  = parseFloat('0' + ua.substr(i+5), 10);
    
    if (navigator.version < 4)
      navigator.family = 'ie3';
    else
      navigator.family = 'ie4'
  }
  else if (ua.indexOf('gecko') != -1) {
    navigator.family = 'gecko';
    var rvStart = ua.indexOf('rv:');
    var rvEnd   = ua.indexOf(')', rvStart);
    var rv      = ua.substring(rvStart+3, rvEnd);
    var rvParts = rv.split('.');
    var rvValue = 0;
    var exp     = 1;

    for (var i = 0; i < rvParts.length; i++) {
      var val = parseInt(rvParts[i]);
      rvValue += val / exp;
      exp *= 100;
    }
    navigator.version = rvValue;

    if (ua.indexOf('netscape') != -1)
      navigator.org = 'netscape';
    else if (ua.indexOf('compuserve') != -1)
      navigator.org = 'compuserve';
    else
      navigator.org = 'mozilla';
  }
  else if ((ua.indexOf('mozilla') !=-1) && (ua.indexOf('spoofer')==-1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('opera')==-1)&& (ua.indexOf('webtv')==-1) && (ua.indexOf('hotjava')==-1)) {
    var is_major = parseFloat(navigator.appVersion);
    
    if (is_major < 4)
      navigator.version = is_major;
    else {
      i = ua.lastIndexOf('/')
      navigator.version = parseFloat('0' + ua.substr(i+1), 10);
    }
    navigator.org = 'netscape';
    navigator.family = 'nn' + parseInt(navigator.appVersion);
  }
  else if ((i = ua.indexOf('aol')) != -1 ) {
    // aol
    navigator.family  = 'aol';
    navigator.org    = 'aol';
    navigator.version  = parseFloat('0' + ua.substr(i+4), 10);
  }
  else if ((i = ua.indexOf('hotjava')) != -1 ) {
    // hotjava
    navigator.family  = 'hotjava';
    navigator.org    = 'sun';
    navigator.version  = parseFloat(navigator.appVersion);
  }
  window.onerror = oldOnError;
}

xbDetectBrowser();