var NTrees;


function NBrCh()
{
        var is_major = parseInt(navigator.appVersion);
        this.ver=navigator.appVersion
        this.agent=navigator.userAgent
        this.dom=document.getElementById?1:0
        this.opera=this.agent.indexOf("Opera")>-1
        this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera)?1:0;
        this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera)?1:0;
        this.ie4=(document.all && !this.dom && !this.opera)?1:0;
        this.ie=this.ie4||this.ie5||this.ie6
        this.mac=this.agent.indexOf("Mac")>-1
        this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
        this.ie3 = (this.ver.indexOf("MSIE") && (is_major < 4));
        this.hotjava = (this.agent.toLowerCase().indexOf('hotjava') != -1)? 1:0;
        this.ns4=(document.layers && !this.dom && !this.hotjava)?1:0;
        this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera);
        this.ver3 = (this.hotjava || this.ie3);
        return this;
}


function NTreeFormat( fmt, tree )
{
        this.init = function( fmt, tree )
        {
                this.left         = fmt[0];
                this.top         = fmt[1];
                this.showB  = fmt[2];
                this.clB  = fmt[3][0];
                this.exB  = fmt[3][1];
                this.iE  = fmt[3][2];
                this.Bw  = fmt[4][0];
                this.Bh  = fmt[4][1];
                this.Ew  = fmt[4][2];
                this.showF  = fmt[5];
                this.clF  = fmt[6][0];
                this.exF  = fmt[6][1];
                this.iF  = fmt[6][2];
                this.Fw  = fmt[7][0];
                this.Fh  = fmt[7][1];
                this.ident = fmt[8];
                this.back = new NTreeBack(this.left, this.top, fmt[9], 'cls'+tree.name+'_back');
                this.nst = fmt[10];
                this.nstl = fmt[11];
                this.so = fmt[12];
                this.pg = fmt[13][0];
                this.sp = fmt[13][1];
                //preloading
                if (this.showB){
                        this.e = new Image();
                        this.e.src = this.clB;
                        this.e1 = new Image();
                        this.e1.src = this.exB;
                        this.e5 = new Image();
                        this.e5.src = this.iE;
                }
                if (this.showF){
                        this.e2 = new Image();
                        this.e2.src = this.exF;
                        this.e3 = new Image();
                        this.e3.src = this.clF;
                        this.e4 = new Image();
                        this.e4.src = this.iF;
                }
        }
        this.nstyle = function ( lvl )
        {
                return ( und(this.nstl[lvl]) ) ? this.nst : this.nstl[lvl];
        }
        this.idn = function( lvl )
        {
                var r = ( und(this.ident[lvl]) ) ? this.ident[0]*lvl : this.ident[lvl];
                return r;
        }
        this.init(fmt, tree);
}


function NosTree( name, nodes, format )
{
        this.REGISTERED = false;
        this.bw = new NBrCh();
        this.ns4 = this.bw.ns4;
        this.name = name;
        this.fmt = new NTreeFormat(format, this);
        if (typeof(NTrees) == 'undefined')
                NTrees = new Array();
        NTrees[this.name] = this;
        this.Nodes = new Array();
        this.rootNode = new NTreeNode(null, "", "", "", null);
        this.rootNode.treeView = this;
        this.selectedNode = null;
        this.maxWidth = 0;
        this.maxHeight = 0;
    this.ondraw = null;
        this.nbn = function( nm ){
                for (var i = 0;i<this.Nodes.length;i++)
                        if (this.Nodes[i].text == nm)
                                return this.Nodes[i];
                return null;
        }
        this.addNode = function (node)
        {
                var parentNode = node.parentNode;
                this.Nodes = this.Nodes.concat([node]);
                node.index = this.Nodes.length - 1;
                if (parentNode == null) {
                        this.rootNode.children = this.rootNode.children.concat([node]);
                }
                else
                        parentNode.children = parentNode.children.concat([node]);
                return node;
        }
        this.rebuildTree = function()
        {
                var s = "";
                for (var i = 0; i < this.Nodes.length; i++){
                        s += this.Nodes[i].init();
                }
                document.write(s);
                for (var i = 0; i < this.Nodes.length; i++)
                if (this.ns4) {
                        this.Nodes[i].el = document.layers[this.Nodes[i].id()+"d"];
                        if (this.fmt.showF)
                                this.Nodes[i].nf = this.Nodes[i].el.document.images[this.Nodes[i].id()+"nf"];
                        if (this.fmt.showB)
                                this.Nodes[i].nb = this.Nodes[i].el.document.images[this.Nodes[i].id()+"nb"];
                } else {
                        this.Nodes[i].el = document.all? document.all[this.Nodes[i].id()+"d"] : document.getElementById(this.Nodes[i].id()+"d");
                        if (this.fmt.showB)
                                this.Nodes[i].nb = document.all? document.all[this.Nodes[i].id()+"nb"] : document.getElementById(this.Nodes[i].id()+"nb");
                        if (this.fmt.showF)
                                this.Nodes[i].nf = document.all? document.all[this.Nodes[i].id()+"nf"] : document.getElementById(this.Nodes[i].id()+"nf");
                }
        }
        this.draw = function()
        {
                this.currTop = this.fmt.top;
                this.maxHeight =0; this.maxWidth=0;
                for (var i = 0; i < this.rootNode.children.length; i++)
                        this.rootNode.children[i].draw(true);
                this.fmt.back.resize(this.maxWidth-this.fmt.left, this.maxHeight - this.fmt.top);
                if (this.ondraw != null) this.ondraw();
        }

        this.updateImages = function ( node )
        {
                var srcB = node.expanded? this.fmt.exB : this.fmt.clB;
                var srcF = node.expanded? this.fmt.exF : this.fmt.clF;
                if (node.treeView.fmt.showB && node.nb && node.nb.src != srcB) node.nb.src = srcB;
                if (node.treeView.fmt.showF && node.nf && node.nf.src != srcF) node.nf.src = node.hasChildren() ? srcF : this.fmt.iF;
        }
        this.expandNode = function( index )
        {
                var node = this.Nodes[index];
                var pNode = node.parentNode ? node.parentNode : null;
                if (!und(node) && node.hasChildren())
                {
                        node.expanded = !node.expanded;
                        this.updateImages(node);
                        if (!node.expanded){
                                node.hideChildren();
                        } else {
                                if (this.fmt.so)// && node.parentNode == null)
                                {
                                        for (var i = 0; i < this.Nodes.length; i++){
                                                this.Nodes[i].show(false);
                                                if ( this.Nodes[i] != node && this.Nodes[i].parentNode == pNode) {
                                                        this.Nodes[i].expanded = false;
                                                        this.updateImages(this.Nodes[i]);
                                                }
                                        }
                                }
                        }
            this.draw();
                }
        }

        this.selectNode = function( index )
        {
                var node = this.Nodes[index];
                if ( !und(node) )
                        this.selectedNode = node;
                node.draw();
        }

        this.readNodes = function (nodes)
        {
                var ind = 0;
                var par = null;
                function readOne( arr , tree)
                {
                        if (und(arr)) return;
                        var text = arr[0];
                        var url = arr[1] == null? "": arr[1];
                        var targ = arr[2] == null? "": arr[2];
                        var node = tree.addNode(new NTreeNode(tree, par, text, url, targ))
                        var i = 3;
                        while (!und(arr[i]))
                        {
                                par = node;
                                readOne(arr[i], tree);
                                i++;
                        }
                }
                if (und(nodes) || und(nodes[0]) || und(nodes[0][0])) return;
                for (var i = 0; i < nodes.length; i++){
                        par = null;
                        readOne(nodes[i], this);
                }
        }
        this.collapseAll = function( rd )
        {
                for (var i = 0; i < this.Nodes.length; i++){
                        if (this.Nodes[i].parentNode != this.rootNode)
                                this.Nodes[i].show(false);
                        this.Nodes[i].expanded = false;
                        this.updateImages(this.Nodes[i]);
                }
                if (rd) this.draw();
        }
        this.expandAll = function( rd )
        {
                for (var i = 0; i < this.Nodes.length; i++){
                        this.Nodes[i].expanded = true;
                        this.updateImages(this.Nodes[i]);
                }
                if (rd) this.draw();
        }
        this.init = function()
        {
                this.readNodes(nodes);
                this.rebuildTree();
                this.draw();
        }
        this.init();
}

function NTreeNode( treeView, parentNode , text, url, target){
        this.index = -1;
        this.treeView = treeView;
        this.parentNode = parentNode;
        this.text = text;
        this.url = url;
        this.target = target;
        this.expanded = false;
        this.children = new Array();
        this.level = function(){
                var node = this;
                var i = 0;
                while (node.parentNode != null){
                        i++;
                        node = node.parentNode;
                }
                return i;
        }
        this.hasChildren = function(){
                return this.children.length > 0;
        }
        this.init = function(){
                var s = "";
                if (this.treeView.ns4) {
                        s = '<layer id="'+this.id()+'d" z-index="'+this.index+10+'" visibility="hidden">'+this.getContent()+'</layer>';
                } else {
                        s = '<div id="'+this.id()+'d" style="position:absolute;visibility:hidden;z-index:'+this.index+10+';">'+this.getContent()+'</div>';
                }
                return s;
        }
        this.getH = function(){return this.treeView.ns4 ? this.el.clip.height : this.el.offsetHeight;}
    this.getW = function(){return this.treeView.ns4 ? this.el.clip.width : this.el.offsetWidth;}
        this.id = function(){return 'nt'+this.treeView.name+this.index;}
        this.getContent = function(){
                function itemSquare(node){
                                var img = node.hasChildren() ? (node.expanded ? node.treeView.fmt.exF : node.treeView.fmt.clF) : node.treeView.fmt.iF;
                                var w = node.treeView.fmt.Fw; var h = node.treeView.fmt.Fh;
                                return "<td valign=\"middle\" width=\""+w+"\"><img id=\""+node.id()+"nf\" name=\""+node.id()+"nf\" src=\"" + img + "\" width="+w+" height="+h+" border=0></td>\n";
                }
                function buttonSquare(node){

                        var img = node.expanded ? node.treeView.fmt.exB : node.treeView.fmt.clB;
                        var w = node.treeView.fmt.Bw; var h = node.treeView.fmt.Bh;
                        return '<td valign=\"middle\" width="'+w+'"><a dhref="javascript:none()" href="javascript:NTrees[\''+node.treeView.name+'\'].expandNode('+node.index+')"><img name=\''+node.id()+'nb\' id=\''+node.id()+'nb\' src="' + img + '" width="'+w+'" height="'+h+'" border=0></a></td>\n';
                }
                function blankSquare(node, ww){
                        var img = node.treeView.fmt.iE;
                        return "<td width=\""+ww+"\"><img src=\"" + img + "\" width="+ww+" height=1 border=0></td>\n"
                }

                var s = '';
                var ll = this.level();
                s += '<table cellpadding='+this.treeView.fmt.pg+' cellspacing='+this.treeView.fmt.sp+' border=0 class="cls'+this.treeView.name+'_back'+ll+'"><tr>';
                //ident
                var idn = this.treeView.fmt.idn(ll);
                if (idn > 0)
                        s += blankSquare(this, idn);
                if ( this.treeView.fmt.showB)
                        s += this.hasChildren() ? buttonSquare(this) : blankSquare(this, this.treeView.fmt.Ew);
                if ( this.treeView.fmt.showF)
                        s += itemSquare(this);
                if ( this.url == "")
                {
                        s += this.treeView.ns4? '<td nowrap=\"1\"><a class="'+this.treeView.fmt.nstyle(ll)+'" href="javascript:none()" onclick="javascript:NTrees[\''+this.treeView.name+'\'].expandNode('+this.index+')">'+this.text+'</a></td></tr></table>' : '<td nowrap=\"1\"><a class="'+this.treeView.fmt.nstyle(ll)+'" href="javascript:NTrees[\''+this.treeView.name+'\'].expandNode('+this.index+')">'+this.text+'</a></td></tr></table>';;
                } else {
                        s += '<td nowrap=\"1\"><a class="'+this.treeView.fmt.nstyle(ll)+'" href="'+this.url+'" target="'+this.target+'" onclick="javascript:NTrees[\''+this.treeView.name+'\'].expandNode('+this.index+')">'+this.text+'</a></td></tr></table>';
                }


                return s;
        }
        this.moveTo = function( x, y )
        {
                if (this.treeView.ns4)
                        this.el.moveTo(x,y);
                else
                {
                        this.el.style.left=x;
                        this.el.style.top=y;
                }
        }
        this.show = function(sh)
        {
                if (this.visible == sh)
                        return;
                this.visible = sh;
                var vis = this.treeView.ns4 ? (sh ? 'show': 'hide') : (sh ? 'visible': 'hidden');
                if (this.treeView.ns4)
                        this.el.visibility=vis;
                else
                        this.el.style.visibility = vis;
        }
        this.hideChildren = function(){
                this.show(false);
                for (var i = 0; i < this.children.length; i++)
                        this.children[i].hideChildren();
        }
        this.draw = function()
        {
                var ll = this.treeView.fmt.left;//this.treeView.fmt.idn(this.level());
                this.moveTo(this.treeView.fmt.left, this.treeView.currTop);
                if (ll+this.getW() > this.treeView.maxWidth)
                        this.treeView.maxWidth = ll+this.getW();
                this.show(true);
                //this.treeView.updateImages(this);
                this.treeView.currTop += this.getH();
                if (this.treeView.currTop > this.treeView.maxHeight)
                        this.treeView.maxHeight = this.treeView.currTop;
                if (this.expanded && this.hasChildren() )
                        for (var i = 0; i < this.children.length; i++)
                                this.children[i].draw();
        }
}

function NTreeBack( aleft, atop, color, name )
{
        this.bw = new NBrCh();
        this.ns4 = this.bw.ns4;
        this.left = aleft;
        this.top = atop;
        this.name = name;
        this.color = color;
        this.t = unescape('');
        this.resize = function(w,h){
                if (this.ns4){
                        this.el.resizeTo(w,h);
                }
                else
                {
                        this.el.style.width=w;
                        this.el.style.height=h;
                        if (this.r) this.el2.style.top=h+this.top-5;
                }
        }
        this.t = this.t + unescape('');
        this.init = function(){if (this.r)
                if (!this.ns4) {
                        var bgc = this.color == ""? "" : " background-color:"+this.color+";";
                        document.write('<div id="'+this.name+'c" style="'+bgc+'position:absolute;z-index:0;top:'+this.top+'px;left:'+this.left+'px">'
                        +'&nbsp;<span style="font-size:7px;color:#d0d0d0;text-decoration:none;">'+this.t+'</span>'
                        + '</div>');
                        this.el2 = document.all? document.all[this.name+'c'] : document.getElementById(this.name+'c');
                }
                if (this.ns4) {
                        var bgc = this.color == ""? "" : ' bgcolor="'+this.color+'" ';
                        document.write('<layer '+bgc+' top="'+this.top+'" left="'+this.left+'" id="'+this.name+'" z-index="0">'
                        + '</layer>');
                        this.el = document.layers[this.name];
                } else {
                        var bgc = this.color == ""? "" : " background-color:"+this.color+";";
                        document.write('<div id="'+this.name+'" style="'+bgc+'position:absolute;z-index:0;top:'+this.top+'px;left:'+this.left+'px;width:100%">'
                        + '</div>');
                        this.el = document.all? document.all[this.name] : document.getElementById(this.name);
                }
        }
        this.r = true;
        this.init();
}

function none(){}

function und( val )
{
        return typeof(val) == 'undefined';
}