//**************************************************************** 
// You are free to copy the "Folder-Tree" script as long as you  
// keep this copyright notice: 
// Script found in: http://www.geocities.com/Paris/LeftBank/2178/ 
// Author: Marcelino Alves Martins (martins@hks.com) December '97. 
//**************************************************************** 
 
//Log of changes: 
//       17 Feb 98 - Fix initialization flashing problem with Netscape
//       
//       27 Jan 98 - Root folder starts open; support for USETEXTLINKS; 
//                   make the ftien4 a js file 
//       
 
 
// Definition of class Folder 
// ***************************************************************** 
 
var imgDirectory = "/img/site/interface/";

function Folder(folderDescription, hreference, freference, initState, isFavorite) //constructor 
{ 
  //constant data 
  this.desc = folderDescription 
  this.hreference = hreference 
  this.freference = freference;
  this.id = -1   
  this.navObj = 0  
  this.iconImg = 0  
  this.nodeImg = 0  
  this.isLastNode = 0	  
 
  //dynamic data 
  this.isOpen = true
  this.iconSrc = ""//16ptfilled.gif"   
  this.children = new Array 
  this.nChildren = 0
  this.initState = initState;	  
  this.isFavorite = isFavorite;
 
  //methods 
  this.initialize = initializeFolder 
  this.setState = setStateFolder 
  this.addChild = addChild 
  this.createIndex = createEntryIndex 
  this.hide = hideFolder 
  this.display = display 
  this.renderOb = drawFolder 
  this.totalHeight = totalHeight 
  this.subEntries = folderSubEntries 
  this.outputLink = outputFolderLink

  /*state = 1
  if (true)
  {
	  this.hide()
  }*/

} 
 
function setStateFolder(isOpen) 
{ 
  var subEntries 
  var totalHeight 
  var fIt = 0 
  var i=0 
 
  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 
  propagateChangesInState(this) 
} 
 
function propagateChangesInState(folder) 
{   
  var i=0 
 
  if (folder.isOpen) 
  { 
    if (folder.nodeImg) 
      if (folder.isLastNode) 
        folder.nodeImg.src = imgDirectory + "ftv2mnode.gif" 
      else 
	  folder.nodeImg.src = imgDirectory + "ftv2mnode.gif" 
    folder.iconImg.src = "16ptfilled.gif"
    for (i=0; i<folder.nChildren; i++) 
      folder.children[i].display() 
  } 
  else 
  { 
    if (folder.nodeImg) 
      if (folder.isLastNode) 
        	folder.nodeImg.src = imgDirectory + "ftv2pnode.gif" 
      else 
	  		folder.nodeImg.src = imgDirectory + "ftv2pnode.gif" 
    folder.iconImg.src = "16ptempty.gif" //image used for contracted folder
    for (i=0; i<folder.nChildren; i++) 
      folder.children[i].hide() 
  }  
} 
 
function hideFolder() 
{ 
  if (browserVersion == 1) { 
    if (this.navObj.style.display == "none") 
      return 
    this.navObj.style.display = "none" 
  } else { 
    if (this.navObj.visibility == "hidden") 
      return 
    this.navObj.visibility = "hidden" 
  } 
   
  this.setState(0) 
} 
 
function initializeFolder(level, lastNode, leftSide) 
{ 
var j=0 
var i=0 
var numberOfFolders 
var numberOfDocs 
var nc 
      
  nc = this.nChildren 
   
  this.createIndex() 
 
  var auxEv = "" 
 
  if (browserVersion > 0) 
    auxEv = "<a href='javascript:clickOnNode("+this.id+")' id='folderIcon" + this.id + "' class='listCatalogLink'>" 
  else 
    auxEv = "<a>" 
 
  if (level>0) 
    if (lastNode) //the last 'brother' in the children array 
    { 
      this.renderOb(leftSide + auxEv + "<img id='nodeIcon" + this.id + "' src='" + imgDirectory + "ftv2mnode.gif' border=\"0\"></a>") 
      //leftSide = leftSide + "<img src='ftv2blank.gif'>"  
      this.isLastNode = 1 
    } 
    else 
    { 
      this.renderOb(leftSide + auxEv + "<img id='nodeIcon" + this.id + "' src='" + imgDirectory + "ftv2mnode.gif' border=0></a>") 
      //leftSide = leftSide + "<img src='ftv2blank.gif'>" 
      this.isLastNode = 0 
    } 
  else 
    this.renderOb("") 
   
  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) 
      } 
  } 
} 
var top = false;
function drawFolder(leftSide) 
{ 
 // if (leftSide == "")
	//return
  
  if (browserVersion == 2) { 
    if (!doc.yPos) 
      doc.yPos=200
    doc.write("<layer id='folder" + this.id + "' top=" + doc.yPos + " visibility=hiden>") 
  } 
   
  var bar = "";
  doc.write('<table width="140"') 
  if (browserVersion == 1) 
	  doc.write(" id='folder" + this.id + "' ") 
  doc.write(' border="0" cellspacing="0" cellpadding="0" style="position:block;">' )
  doc.write('<tr><td class="listHeadline" width="127">')
	  if( this.id != 0 )
		bar = '<img src="' + imgDirectory + 'headline_divider.gif" width="140" height="1"/>';
  doc.write(leftSide) 
  this.outputLink() 
  doc.write("<a id='folderIcon" + this.id + "' ") 
  doc.write(" border=0></a>") 
  if (USETEXTLINKS) 
  { 
    this.outputLink() 
    doc.write(this.desc + "</a>") 
  } 
  else 
    doc.write(this.desc) 
  
  if (this.isFavorite == 0)
	//doc.write('</td><td width="13"><a href="' + this.freference + "\"><img src=\"/img/site/interface/add_heading_favs_but.gif\"></a></td>")  
  //else
	if( this.id != 0 )
		doc.write( '</td></tr><tr><td colspan="2">' );
		doc.write( bar ); //seperator
	doc.write( "</td></tr>" );
  doc.write("</table>") 
   
  if (browserVersion == 2) { 
    doc.write("</layer>") 
  } 
 
  if (browserVersion == 1) { 
    this.navObj = doc.getElementById("folder"+this.id) 
    this.iconImg = doc.getElementById("folderIcon"+this.id) 
    this.nodeImg = doc.getElementById("nodeIcon"+this.id) 
  } else if (browserVersion == 2) { 
    this.navObj = doc.layers["folder"+this.id] 
    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 
  } 
} 
// This is changed *********** 
function outputFolderLink() 
{ 
if (this.id > 0){
  if (this.hreference) 
  { 
    doc.write("<a href='" + this.hreference + "'") 
    if (browserVersion > 0) 
      doc.write(" onClick='javascript:clickOnNode("+this.id+")'") 
    doc.write(' Class="listHeadlineLink">') 
  } 
  else 
  {
	doc.write("<a>") 
	doc.write("<a href='javascript:clickOnNode("+this.id+")'")
	doc.write(' Class="listHeadlineLink">') 
  }
}
else{
  if (this.hreference) 
  { 
    doc.write("<a href='" + this.hreference + "'") 
    if (browserVersion > 0) 
      doc.write(" onClick='javascript:clickOnFolder("+this.id+")'") 
    doc.write(">") 
  } 
  else 
    //doc.write("<a>") 
	doc.write("<a href='javascript:clickOnFolder("+this.id+")'>")   
}
} 
 
function addChild(childNode) 
{ 
  this.children[this.nChildren] = childNode 
  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 
} 
 
 
// Definition of class Item (a document or link inside a Folder) 
// ************************************************************* 
 
function Item(itemDescription, itemLink) // 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 = "spacer.gif" //image used for bullet listed links in folders
 
  // methods 
  this.initialize = initializeItem 
  this.createIndex = createEntryIndex 
  this.hide = hideItem 
  this.display = display 
  this.renderOb = drawItem 
  this.totalHeight = totalHeight 
} 
 
function hideItem() 
{ 
  if (browserVersion == 1) { 
    if (this.navObj.style.display == "none") 
      return 
    this.navObj.style.display = "none" 
  } else { 
    if (this.navObj.visibility == "hidden") 
      return 
    this.navObj.visibility = "hidden" 
  }     
} 
 
function initializeItem(level, lastNode, leftSide) 
{  
  this.createIndex() 
 
  if (level>0) 
    if (lastNode) //the last 'brother' in the children array 
    { 
		this.renderOb(leftSide)//+ "<img src='ftv2blank.gif' width=20 height=20>") 
     // leftSide = leftSide + "<img src='ftv2blank.gif' width=20 height=20>"  
    } 
    else 
    { 
      this.renderOb(leftSide )//+ "<img src='ftv2blank.gif' width=20 height=20>") //adds the space to the left of the links
//leftSide = leftSide + "<img src='ftv2blank.gif' width=20 height=20>" 
    } 
  else 
    this.renderOb("")   
} 
 
function drawItem(leftSide) 
{ 
  if (browserVersion == 2) 
    doc.write("<layer id='item" + this.id + "' top=" + doc.yPos + " visibility=hiden>") 
     
  doc.write("<table") 
  if (browserVersion == 1) 
    doc.write(" id='item" + this.id + "' style='position:block;' ") 
  doc.write(" border=0 cellspacing=0 cellpadding=0>") 
  doc.write("<tr><td width=\"15\" class=\"listCatalog\">&nbsp;") 
  doc.write(leftSide) 
  //doc.write("<a href=" + this.link + ">") 
  //doc.write("<img id='itemIcon"+this.id+"' ") 
  //doc.write("src='"+this.iconSrc+"' width=\"10\" height=\"0\" border=0>")//specifies height and width of spacer for links in folder
  //doc.write("</a>") 
  doc.write("</td><td valign=middle>") 
  if (USETEXTLINKS) 
    doc.write("<a href=" + this.link + ' class="listCatalogLink">' + this.desc + "</a>") 
  else 
    doc.write(this.desc) 
  doc.write("</table>") 
   
  if (browserVersion == 2) 
    doc.write("</layer>") 
 
  if (browserVersion == 1) { 
    this.navObj = doc.getElementById("item"+this.id) 
    this.iconImg = doc.getElementById("itemIcon"+this.id) 
  } else if (browserVersion == 2) { 
    this.navObj = doc.layers["item"+this.id] 
    this.iconImg = this.navObj.document.images["itemIcon"+this.id] 
    doc.yPos=doc.yPos+this.navObj.clip.height 
  } 
} 
 
 
// Methods common to both objects (pseudo-inheritance) 
// ******************************************************** 
 
function display() 
{ 
  if (browserVersion == 1) 
    this.navObj.style.display = "block" 
  else 
    this.navObj.visibility = "show" 
} 
 
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 
} 
 
 
// Events 
// ********************************************************* 
 
function clickOnFolder(folderId) 
{ 
  var clicked = indexOfEntries[folderId] 

  if (!clicked.isOpen) 
    clickOnNode(folderId) 

  return  
 
  if (clicked.isSelected) 
    return 
} 
 
function clickOnNode(folderId) 
{ 
  
  var clickedFolder = 0 
  var state = 0 
 
  clickedFolder = indexOfEntries[folderId] 
  state = clickedFolder.isOpen 
 
  clickedFolder.setState(!state) //open<->close  
  
} 
 
function initializeDocument() 
{ 
  if (doc.getElementById) 
    browserVersion = 1 //IE5+, Mozilla, and other DOM compliant browsers
  else 
    if (doc.layers) 
      browserVersion = 2 //NS4 
    else 
      browserVersion = 0 //other 
	
  foldersTree.initialize(0, 1, "") 
  foldersTree.display()
  
  browserVersion = 1;
  if (browserVersion > 0) 
  { 
    doc.write("<layer top="+indexOfEntries[nEntries-1].navObj.top+">&nbsp;</layer>") 
 
    // close the whole tree 
    clickOnNode(0) 
    
    
    // open the root folder 
    clickOnNode(0)
	
	for (i = 0; i < indexOfEntries.length; i++)
	{
		if (indexOfEntries[i].initState == 1)
		{
			clickOnNode(indexOfEntries[i].id);
		}
	}
	
	//clickOnNode(32)
    //clickOnNode(52)
  }
} 
 
// Auxiliary Functions for Folder-Treee backward compatibility 
// ********************************************************* 
 
function gFld(description, hreference, freference, initState, isFavorite) 
{ 
  folder = new Folder(description, hreference, freference, initState, isFavorite) 
  return folder 
} 
 
function gLnk(target, description, linkData) 
{ 
  fullLink = "" 
 
  if (target==0) 
  { 
    fullLink = "'"+linkData+"'"
  } 
  else 
  { 
    if (target==1) 
       fullLink = "'"+linkData+"'"// target='_blank'" 
    else 
       fullLink = "'http://"+linkData+"'"// target='_blank'" 
  } 
 
  linkItem = new Item(description, fullLink)   
  return linkItem 
} 
 
function insFld(parentFolder, childFolder) 
{ 
  return parentFolder.addChild(childFolder) 
} 
 
function insDoc(parentFolder, document, isCurrentClass) 
{ 
  parentFolder.addChild(document)
	  
  if (isCurrentClass == 1)
  {
	  parentFolder.initState = 1;
  }
} 
 
// Global variables 
// **************** 
 
USETEXTLINKS = 1 
indexOfEntries = new Array 
nEntries = 0 
doc = document 
browserVersion = 0 
selectedFolder=0