大侠给看看我的这棵树错在哪？（持高分待解）

Question

l.style.color = l.fontColorHilite;
  }
}function selectTreeItem(l)
{
  var s = window.selectedTreeItem;
  if (s)
  {
    if (l == s) return;
    s.style.backgroundColor = s.saveBgColor;
    s.style.backgroundColor = s.saveBgColor;
    if (!s.childTree) s.img.src = s.icons[0] || s._icons[0];
    s.isSelected = false;
  }  if (l)
  {
    l.saveBgColor = l.style.backgroundColor;
    l.saveBgColor = l.style.backgroundColor;
    l.style.backgroundColor = l.selectedBgColor;
    l.style.backgroundColor = l.selectedBgColor;
    l.isSelected = true;
    window.selectedTreeItem = l;
  }
    hiliteTreeItem(l);
}function onTreeItemUp(e, isIcon, isDrag)
{
  e = e || window.Event || window.event;
  if (e.which > 1) return false;
  document.saveMousemove = document.onmousemove;
  document.onmousemove = mouseTracker;
  var a = window.activeTreeItem;
  if (window.tDrag)
  {
    if (tDrag.dragLayer) isDrag = fOnTreeItemUp(e, a);
  }
  if (a && !isDrag)
  {
    if (a.isSelected)
      onTreeFolder(a);
    if (isIcon)
    {
    }
    else if (a.action)
    {
      selectTreeItem(a);
      window.saveActiveTreeItem = a;
      setTimeout('window.saveActiveTreeItem.parentElement.Tree.onTreeItemAction();', 2);
    }
    else
    {
      selectTreeItem(a);
    }
    hiliteTreeItem();
  }
  window.inactiveTreeItem = activeTreeItem;
  window.activeTreeItem = a;
}function onTreeItemAction(e, l)
{
  l = l || this;
  if (!window.saveActiveTreeItem) return;
  if (saveActiveTreeItem.action)
  {
    eval(saveActiveTreeItem.action + "");
  }
  else if (l.id)
  {
    if (l.id.indexOf("treeItem") != -1) eval(l.action +"");
  }
  window.saveActiveTreeItem = null;
}function onTreeFolder(l)
{
  document.onmousemove = mouseTracker;
  l = l || window.activeTreeItem;
  if (!l.childTree) return;
  if (!l.childTree.treeLayer)
    l.childTree.writeTree();  var childTreeLayer = l.childTree.treeLayer;
  var childTree = l.childTree;
  var parentTree = l.parentElement.Tree;
  childTreeLayer.parentTree = parentTree;
  childTreeLayer.zIndex = l.zIndex +1; //bring folders fwd for now...
  if (childTree.isOpen)
  {
    l.img.src = l.icons[1];
    if (l.openerImg)
    l.openerImg.src = l.openFolderIcons[0];    closeChildTree(childTree);
  }
  else
  {
    childTree.isOpen = true;
    l.img.src = l.icons[3];
    if (l.openerImg)
      l.openerImg.src = l.openFolderIcons[1];
    if (parentTree)
    {
      childTreeLayer.style.visibility = "inherit";
      if (!childTreeLayer.onmouseover)
    buildTree(childTree);
      childTree.treeLayer.style.pixelLeft = parentTree.treeLayer.style.pixelLeft + 20;
      childTree.treeLayer.style.pixelTop = parentTree.treeLayer.style.pixelTop + l.style.pixelTop + l.style.pixelHeight + childTree.itemBorder;
    }    adjustParentTree(childTree);
    adjustChildTree(childTree);
    activeTreeLayers[childTreeLayer.id] = childTreeLayer;
  }  window.activeTreeLayer = childTreeLayer;
}function closeChildTree(tree)
{
  if (!tree) return;
  tree.isOpen = false;
  if (tree.treeLayer)
    tree.treeLayer.style.visibility = "hidden";  adjustChildTree(tree);
  adjustParentTree(tree);
  activeTreeLayers[tree.id] = null;
}function adjustParentTree(tree)
{
  if (!tree)
    return;  tree = tree.Tree || tree;
  var treeLayer = tree.treeLayer || tree;
  var p = treeLayer.parentTree;  if (!p)
    return;  if (!p.itemLayers)
    return;  var l = p.treeLayer;
  if (!l)
    return;  for (var i=0; i<p.itemLayers.length; i++)
  {
    if (p.itemLayers.length > 0)
{
      if (i>0)
  {
        p.itemLayers[i].style.pixelTop = p.itemLayers[i-1].style.pixelTop + p.itemLayers[i-1].style.pixelHeight;
        if (p.itemLayers[i-1].childTree && !p.itemLayers[i-1].isDeleted)
{
          if (p.itemLayers[i-1].childTree.isOpen)
  {
            p.itemLayers[i-1].childTree.treeLayer.style.pixelTop = p.itemLayers[i-1].childTree.parentFolder.parentElement.style.pixelTop + p.itemLayers[i-1].childTree.parentFolder.style.pixelTop + p.itemLayers[i-1].childTree.parentFolder.style.pixelHeight;
            p.itemLayers[i].style.pixelTop += p.itemLayers[i-1].childTree.treeLayer.style.pixelHeight;
            for (var j in p.itemLayers[i-1].childTree.childTrees)
{
              if (p.itemLayers[i-1].childTree.childTrees[j].isOpen) adjustChildTree(p.itemLayers[i-1].childTree);
            }
          }
        }
      }
      p.itemLayers[i].style.visibility = "inherit";
    }
  }  if (l.lastLayer)
  {
    l.style.pixelHeight = l.lastLayer.style.pixelTop +20;
    if (l.lastLayer.childTree)
{
      if (l.lastLayer.childTree.isOpen)
  {
        l.lastLayer.childTree.treeLayer.style.pixelTop = l.lastLayer.childTree.parentFolder.parentElement.style.pixelTop + l.lastLayer.childTree.parentFolder.style.pixelTop + l.lastLayer.childTree.parentFolder.style.pixelHeight;
        l.style.pixelHeight += l.lastLayer.childTree.treeLayer.style.pixelHeight;
      }
    }
  }
  else
  {
    l.style.pixelHeight = 0;
  }
  adjustParentTree(l);
}function adjustChildTree(tree)
{
  if (!tree)
    return;

Answer 1

tree = tree.Tree || tree;
  var l = tree.treeLayer;  if (!l)
    return;  if (!tree.itemLayers)
    return;  for (var i=0; i<tree.itemLayers.length; i++)
  {
    if (!tree.itemLayers[i].childTree)
{
    }
else if (!tree.itemLayers[i].childTree.treeLayer || tree.itemLayers[i].isDeleted)
{
    }
else if (tree.itemLayers[i].childTree)
{
      tree.itemLayers[i].childTree.treeLayer.style.pixelTop = tree.itemLayers[i].childTree.parentFolder.parentElement.style.pixelTop + tree.itemLayers[i].childTree.parentFolder.style.pixelTop + tree.itemLayers[i].childTree.parentFolder.style.pixelHeight;
      tree.itemLayers[i].childTree.treeLayer.zIndex = l.zIndex +1; //bring folders fwd for now...
      if (l.style.visibility != "inherit")
        tree.itemLayers[i].childTree.treeLayer.style.visibility = "hidden";
      else if (tree.itemLayers[i].childTree.isOpen)
        tree.itemLayers[i].childTree.treeLayer.style.visibility = "inherit";
    }
    adjustChildTree(tree.itemLayers[i].childTree);
  }
}function handleTreeContainer(e, container)
{
}function setTreeItemProps(l, label, action, icons, img, fontSize, fontColor, fontColorHilite, selectedBgColor, mouseover, childTree)
{
    l.label = label;
    l.action = action;
    //l.fontSize = fontSize || 14;
    l.fontSize = 2;
    l.fontColor = fontColor;
    l.fontColorHilite = fontColorHilite;
    l.selectedBgColor = selectedBgColor;
    if (childTree)
{
      l.childTree = childTree;
      l.childTree.parentFolder = l;
    }
    l.icons = icons;
    l.img = img;
    l.onmouseover = mouseover;
}function buildTree(tree, x, y, child)
{
  tree = tree || this;
  if (!tree.treeLayer)
    writeTree(tree);  var l = tree.treeLayer;
  if (!l)
    return;  var items = new Array();
  for (var i=0; i<l.children.length; i++) items[i] = l.children[i];
  tree.itemLayers = items;
  var container = l.Tree.container;
  var actions = l.Tree.actions;
  var proto = l.Tree.protoTree;
  l.onmouseover = setActiveTree;
  l.Tree.childTrees = new Array();
  l.style.pixelWidth = proto.treeWidth || 200;
  l.style.pixelHeight = proto.treeHeight || 200;
  for (var i=0; i < l.children.length; i++)
  {
    child = l.children[i];
    child.pos = i;
    var childTree=null, icons=null, img=null;
    if (child.innerHTML.indexOf("treeFolderImg") > -1)
{
      childTree = container.trees[child.id.substring(child.id.indexOf(":")+1)];
      l.Tree.childTrees[l.Tree.childTrees.length] = childTree;
      icons = l.Tree.icons[i] || l.Tree.protoTree.folderIcons;
      img = child.document.images["treeFolderImg:" + child.id];
      if (child.innerHTML.indexOf("treeOpenerImg") > -1)
  {
        child.openerImg = child.document.images["treeOpenerImg:" + child.id];
        child.openFolderIcons = proto.openFolderIcons;
      }
    }
else
{
      icons = l.Tree.icons[i] || l.Tree.protoTree.itemIcons;
      img = child.document.images["treeItemImg:" + child.id];
    }
    setTreeItemProps(child,(l.Tree.items[i].label || l.Tree.items[i]),actions[i],icons,img,(l.Tree.fontSizes[i] || proto.fontSize), (l.Tree.fontColors[i] || proto.fontColor),proto.fontColorHilite,proto.selectedBgColor,onTreeItemOver,childTree);
    child.style.pixelLeft = child.style.pixelWidth + 2;
    child.style.pixelLeft = child.style.pixelWidth + 3;
    child.style.pixelWidth = proto.treeItemWidth || 100;
    child.style.pixelHeight = proto.treeItemHeight || 20;
    if (i>0)
{
      child.style.pixelLeft = l.children[i-1].style.pixelLeft;
      child.style.pixelTop = l.children[i-1].style.pixelTop + l.children[i-1].style.pixelHeight + proto.itemBorder;
      var w = l.children[i-1].style.pixelLeft + l.children[i-1].style.pixelWidth;
      if (child.style.pixelWidth < w) child.style.pixelWidth = w;
    }
    child.style.visibility = "inherit";
  }  if (l.children.length == 1)
  {
    l.lastLayer = null;
    l.style.pixelHeight = 20;
  }
  else
  {
    l.lastLayer = child;
    child.isLastLayer = true;
    l.style.pixelHeight = child.style.pixelTop + child.style.pixelHeight;
    l.style.pixelWidth = child.style.pixelLeft + child.style.pixelWidth;
  }
  l.style.pixelLeft = x || 0;
  l.style.pixelTop = y || 0;
  l.onmousedown = onTreeItemDown;
  l.onmouseout = onTreeItemOut;
  if (container.style.visibility != "inherit")
  {
    container.style.pixelWidth = window.activeTreeLayer.style.pixelWidth +2;
    container.style.pixelHeight = window.activeTreeLayer.style.pixelHeight +2;
    container.style.visibility = "inherit";
  }
}function showTree(tree, x, y)
{
  tree = tree || this;
  if (!tree.treeLayer)
    writeTree(tree);  var l = tree.treeLayer;
  if (!l)
    return;  window.activeTreeLayer = l;
  window.activeTreeLayers[l.id] = l;
  if (l.parentElement)
  {
    if (x) l.parentElement.style.pixelLeft = x || 0;
    if (y) l.parentElement.style.pixelTop = y || 0;
    window.activeTreeLayer.style.pixelLeft = 1;
    window.activeTreeLayer.style.pixelTop = 1;
  }  if (!l.onmouseover)
    buildTree(l.Tree);
  l.style.visibility = "inherit";
}function setActiveTree(e, l)
{
  window.activeTreeLayer = l || this;
}function mouseTracker(e)
{
  e = e || window.Event || window.event;
  window.pageX = e.pageX || e.clientX;
  window.pageY = e.pageY || e.clientY;
}function setTreeMouseTracker()
{
  document.onmousemove = this.mouseTracker;
}function onTreeItemDown(e, l)
{
  e = e || window.Event || window.event;
  l = l || window.activeTreeItem;
  if (!l)
    return false;  if (e.which > 1)
  {
    if (l.parentElement.Tree.protoTree.onTreeRightDown)
  l.parentElement.Tree.protoTree.onTreeRightDown(e, l);
    return false;
  }
  else if (window.Features)
  {
    return fOnTreeItemDown(e, l);
  }
  return true;
}function setMouseUps(name, func)
{
  window.saveMouseUps = window.saveMouseUps || new Array();
  window.saveMouseUps[name] = func;

Answer 2

if (window.onmouseup && window.onmouseup != handleMouseUps)
    window.saveMouseUps[onmouseup] = onmouseup;
  if (document.onmouseup && document.onmouseup != handleMouseUps)
    window.saveMouseUps[document.onmouseup] = document.onmouseup;
  document.onmouseup = handleMouseUps;
}function handleMouseUps(e)
{
  for (var i in window.saveMouseUps)
  {
    if (typeof(saveMouseUps[i]) == "function" && saveMouseUps[i] != window.hideMenu)
  saveMouseUps[i](e);
  }
  if (window.hideMenu)
    hideMenu(e); //backwards compat.
}if (document.all)
{
  if (!document.all["rootContainer"])
    document.writeln('<SPAN ID="rootContainer" STYLE="position:absolute;visibility:hidden"></SPAN>');
  if (!document.all["dragContainer"])
    document.writeln('<SPAN ID="dragContainer" STYLE="position:absolute;visibility:hidden"></SPAN>');
}// we expand the 'tree' to the node by 'treeParams'
// 'treeParams' must like 'AAAA->BBBB->CCCC'..
// we can parse the strings from the 'treeParams' string,
// and we expand the tree with these strings labelled in tree
function expandTo(tree,treeParams)
{
var i;
var pos;
var strs = new Array();for (i=0; ((pos=treeParams.search("->"))!=-1);i++)
    {
    strs[i] = treeParams.substr(0,pos);
    treeParams = treeParams.replace(strs[i]+"->","");
    }
if (treeParams != "")
    strs[i] = treeParams;var treeItem = tree;
for (i=0; i<strs.length; i++)
    {
    var treeItem = getTreeItem(treeItem,strs[i]);
    if (treeItem==null || treeItem.items==null)
        break;
    }
}// find a item in tree items which label is == str;
// if the found item is a tree, we expand the item;
// if the found item is a string, we navigate the right frame to the actionURL.;
// at last return the found item;
function getTreeItem(tree, str)
{
if (tree && tree.items)
    {
    var i;
    for (i=0; i<tree.items.length; i++)
        {
        var iTree = tree.items[i];
        var iLabel = (iTree.items ? iTree.label:iTree);
        if (iLabel == str)
            {
            var l;
            if (iTree.items)
                l = document.all("treeItem"+i+":"+iTree.id,0);
            else
                {
                l = document.all("treeItem"+i+":"+iTree,0);
                selectTreeItem(l);
                var action = tree.actions[i];
                eval(action);
/*
//                action = action.replace("goURL('","");
//                action = action.replace("')","");                // xxxx:here is hack ,we use the static name 'top.main.rf',;
                // maybe some problem will happens someday because right frame name isn't always equals 'rf'
                top.main.rf.location.href = action;
*/
                }            onTreeFolder(l,true);
            return iTree;
            }
        }
    }return null;
}