function set_path(id)
{
  var p_obj = document.getElementById('path');
  if(p_obj)
  {
    var str = '';
    
    var parent = t.getNode(id);
    while(parent)
    {
      str = ' -> <span class="title">' + parent.name + '</span>' + str;
      parent = t.getNode(parent.pid);
    }
    
    p_obj.innerHTML = global_path + str;
  }
}

function get_list(node_id,pk,level,flag) {
	if(!this.http){
		this.http = xmlhttp;
		working = false;
	}
        
        if(flag)
          flag = 2;
        else
          flag = 1;
        
        http = this.http;
	if (!working && http) {
		this.http.open("POST", global_url+"/get_childrens", true);
		this.http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		this.http.onreadystatechange = function() {
			el = document.getElementById('loading');
			if (http.readyState == 4) {
				fill(node_id, http.responseText,level+1,flag);
				el.style['display'] = 'none';
				working = false;
			} else {
				//el.style['top'] = document.body.scrollTop+100;
				el.style['display'] = 'block';
			}
		}
		working = true;
		this.http.send('&pk='+pk+'&level='+level);
	}
	if(!http) {
		alert('Ошибка при создании XMLHTTP объекта!')
	}
}

function get_list2(node_id,pk,level, page) {
	if(!this.http){
		this.http = xmlhttp;
		working = false;
	}
        
        http = this.http;
	if (!working && http) {
		this.http.open("POST", global_url+"/get_tovars", true);
		this.http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		this.http.onreadystatechange = function() {
			el = document.getElementById('loading');
			if (http.readyState == 4) {
				fill(node_id, http.responseText,level+1,0);
				el.style['display'] = 'none';
				working = false;
			} else {
				//el.style['top'] = document.body.scrollTop+100;
				el.style['display'] = 'block';
			}
		}
		working = true;
		this.http.send('&pk='+pk+'&level='+level+'&page='+page);
	}
	if(!http) {
		alert('Ошибка при создании XMLHTTP объекта!')
	}
}

function fill (parent_id, data, level,flag){
	if(data.length == 0) return;
	
	var arr = data.split('\n');
        
        var cnt=0;
        
        for (var i=0; i < arr.length && cnt == 0; i++)
	{
	  val = arr[i].split('\t');
	    
	  if(val.length)
	  {
            if(val.length == 3)
            {
              name = val[0];
      	    
              var new_name="";
              for(var j=0; j < name.length; j++)
              if(name.charAt(j) != 0)
                new_name += name.charAt(j);
      	    
              var is = 1;
              if(level == 5)
                is = 0;
      	    
              t.add(tree_id++,parent_id,is, new_name,'','','','',val[1],level,' ('+val[2]+')');
            }

            if(val.length == 4)
              cnt = i+1;
	  }
	}
	
        document.getElementById('tree').innerHTML = t;
	
	if(flag)
	{
	  t.openTo(parent_id, false);
	}
	
	if(flag < 2)
	{
	  show_tovars(arr, cnt, parent_id);
	  set_path(parent_id);
	}
	else
	{
	  set_path(0);
	}
	
	
}

function Node(id, pid, is_node, name, target, icon, iconOpen, open, pk, level, cnt) {
	this.id = id;
	this.pid = pid;
	this.name = name;
	
	if(pid > 0)
	{
	  var parent = t.getNode(pid);
	  this.pk = parent.pk + '_' + pk;
	}
	else
	{
	  this.pk = pk;
	}
        
        this.opk = pk;
        this.level = level;
        this.cnt = cnt;
	this.url = "javascript:get_list("+id+",'"+this.pk+"',"+level+");";
	this.title = name;
	this.is_node = is_node || false;
	this.target = target;
	this.icon = icon;
	this.iconOpen = iconOpen;
	this._io = open || false;
	this._is = false;
	this._ls = false;
	this._hc = false;
	this._ai = 0;
	this._p;
};

function CTree(objName) {
	this.config = {
		target		: null,
		folderLinks	: true,
		useSelection	: false,
		useCookies	: true,
		useLines	: true,
		useIcons	: true,
		useStatusText	: false,
		closeSameLevel	: false,
		inOrder		: false
	}

	this.icon = {
		root		: 'tree/img/folder.gif',
		folder		: 'tree/img/folder.gif',
		folderEmpty	: 'tree/img/folder.gif',
		folderOpen	: 'tree/img/folderopen.gif',
		node		: 'tree/img/page.gif',
		empty		: 'tree/img/empty.gif',
		line		: 'tree/img/line.gif',
		join		: 'tree/img/join.gif',
		joinBottom	: 'tree/img/joinbottom.gif',
		plus		: 'tree/img/plus.gif',
		plusBottom	: 'tree/img/plusbottom.gif',
		minus		: 'tree/img/minus.gif',
		minusBottom	: 'tree/img/minusbottom.gif',
		nlPlus		: 'tree/img/nolines_plus.gif',
		nlMinus		: 'tree/img/nolines_minus.gif'
	};

	this.obj = objName;
	this.aNodes = [];
	this.aIndent = [];
	this.root = new Node(-1);
	this.selectedNode = null;
	this.selectedFound = false;
	this.completed = false;
};

CTree.prototype.add = function(id, pid, is_node, name, target, icon, iconOpen, open, pk, level, cnt) {
	this.aNodes[this.aNodes.length] = new Node(id, pid, is_node, name, target, icon, iconOpen, open, pk, level, cnt);
};


CTree.prototype.openAll = function() {
	this.oAll(true);
};

CTree.prototype.closeAll = function() {
	this.oAll(false);
};


// Outputs the tree to the page

CTree.prototype.toString = function() {
	var str = '<div class="ctree">\n';
	if (document.getElementById) {
		if (this.config.useCookies) this.selectedNode = this.getSelected();
		str += this.addNode(this.root);
	} else str += 'Browser not supported.';
	str += '</div>';
	if (!this.selectedFound) this.selectedNode = null;
	this.completed = true;
	return str;
};

// Creates the tree structure

CTree.prototype.addNode = function(pNode) {
	var str = '';
	var n=0;
	if (this.config.inOrder) n = pNode._ai;
	for (n; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == pNode.id) {
			var cn = this.aNodes[n];
			cn._p = pNode;
			cn._ai = n;
			this.setCS(cn);
			if (!cn.target && this.config.target) cn.target = this.config.target;
			if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);
			if (!this.config.folderLinks && cn._hc) cn.url = null;
			if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) {
				cn._is = true;
				this.selectedNode = n;
				this.selectedFound = true;
			}
			str += this.node(cn, n);
			if (cn._ls) break;
		}
	}
	return str;
};

// Creates the node icon, url and text

CTree.prototype.node = function(node, nodeId) {
	var str = '<div class="ctree">' + this.indent(node, nodeId);
	if (this.config.useIcons) {
		if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : (node.is_node ? this.icon.folderEmpty : this.icon.node));
		if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : (node.is_node ? this.icon.folderEmpty : this.icon.node);
		if (this.root.id == node.pid) {
			node.icon = this.icon.root;
			node.iconOpen = this.icon.root;
		}
		str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';
	}
	if (node.url) {
		str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + (node._hc ? 'javascript:'+this.obj + '.o(' + nodeId + ');' : node.url) + '"';
		if (node.title) str += ' title="' + node.title + node.cnt + '"';
		if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';
		if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))
			str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';
		str += '>';
	}
	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)
		str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';
	str += node.name+node.cnt;
	if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
	str += '</div>';
	if (node._hc) {
		str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';
		str += this.addNode(node);
		str += '</div>';
	}
	this.aIndent.pop();
	return str;
};



// Adds the empty and line icons

CTree.prototype.indent = function(node, nodeId) {
	var str = '';
	if (this.root.id != node.pid) {
		for (var n=0; n<this.aIndent.length; n++)
			str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt=""/>';
		(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
		if (node.is_node) {
			str += '<a href="' + (node._hc ? 'javascript:'+this.obj + '.o(' + nodeId + ');' : node.url)+'"><img id="j' + this.obj + nodeId + '" src="';
			if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;
			else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );
			str += '" alt="" border="0" /></a>';
		} else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';
	}
	return str;
};

// Checks if a node has any children and if it is the last sibling

CTree.prototype.setCS = function(node) {
	var lastId;
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.id) node._hc = true;
		if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;
	}
	if (lastId==node.id) node._ls = true;
};

// Returns node by ID

CTree.prototype.getNode = function(nodeId) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].id == nodeId) return this.aNodes[n];
	}
};

// Returns the selected node

CTree.prototype.getSelected = function() {
	var sn = this.getCookie('cs' + this.obj);
	return (sn) ? sn : null;
};



// Highlights the selected node
CTree.prototype.s = function(id) {
	if (!this.config.useSelection) return;
	var cn = this.aNodes[id];
	if (cn._hc && !this.config.folderLinks) return;
	if (this.selectedNode != id) {
		if (this.selectedNode || this.selectedNode==0) {
			eOld = document.getElementById("s" + this.obj + this.selectedNode);
			eOld.className = "node";
		}
		eNew = document.getElementById("s" + this.obj + id);
		eNew.className = "nodeSel";
		this.selectedNode = id;
		if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);
	}
};



// Toggle Open or close

CTree.prototype.o = function(id) {
	var cn = this.aNodes[id];
	this.nodeStatus(!cn._io, id, cn._ls);
	if(cn.id != 1)
	  cn._io = !cn._io;
	if (this.config.closeSameLevel) this.closeLevel(cn);
	if (this.config.useCookies) this.updateCookie();
	get_list2(cn.id, cn.pk, cn.level, 1);
};

// Open or close all nodes

CTree.prototype.oAll = function(status) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) {
			this.nodeStatus(status, n, this.aNodes[n]._ls)
			this.aNodes[n]._io = status;
		}
	}
	if (this.config.useCookies) this.updateCookie();
};

// Opens the tree to a specific node

CTree.prototype.openTo = function(nId, bSelect, bFirst) {
	if (!bFirst) {
		for (var n=0; n<this.aNodes.length; n++) {
			if (this.aNodes[n].id == nId) {
				nId=n;
				break;
			}
		}
	}    
	
	var cn=this.aNodes[nId];
	if (cn.pid==this.root.id || !cn._p) return;
	cn._io = true;
	cn._is = bSelect;
	if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);
	if (this.completed && bSelect) this.s(cn._ai);
	else if (bSelect) this._sn=cn._ai;
	this.openTo(cn._p._ai, false, true);
};

// Closes all nodes on the same level as certain node

CTree.prototype.closeLevel = function(node) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) {
			this.nodeStatus(false, n, this.aNodes[n]._ls);
			this.aNodes[n]._io = false;
			this.closeAllChildren(this.aNodes[n]);
		}
	}
}

// Closes all children of a node

CTree.prototype.closeAllChildren = function(node) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) {
			if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);
			this.aNodes[n]._io = false;
			this.closeAllChildren(this.aNodes[n]);		
		}
	}
}

// Change the status of a node(open or closed)

CTree.prototype.nodeStatus = function(status, id, bottom) {
	eDiv	= document.getElementById('d' + this.obj + id);
	eJoin	= document.getElementById('j' + this.obj + id);
	if (this.config.useIcons) {
		eIcon	= document.getElementById('i' + this.obj + id);
		eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;
	}
	if(eJoin)
	  eJoin.src = (this.config.useLines)?
	((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):
	((status)?this.icon.nlMinus:this.icon.nlPlus);
	eDiv.style.display = (status) ? 'block': 'none';
};

// [Cookie] Clears a cookie

CTree.prototype.clearCookie = function() {
	var now = new Date();
	var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);
	this.setCookie('co'+this.obj, 'cookieValue', yesterday);
	this.setCookie('cs'+this.obj, 'cookieValue', yesterday);
};



// [Cookie] Sets value in a cookie

CTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) {
	document.cookie =
		escape(cookieName) + '=' + escape(cookieValue)
		+ (expires ? '; expires=' + expires.toGMTString() : '')
		+ (path ? '; path=' + path : '')
		+ (domain ? '; domain=' + domain : '')
		+ (secure ? '; secure' : '');
};

// [Cookie] Gets a value from a cookie

CTree.prototype.getCookie = function(cookieName) {
	var cookieValue = '';
	var posName = document.cookie.indexOf(escape(cookieName) + '=');
	if (posName != -1) {
		var posValue = posName + (escape(cookieName) + '=').length;
		var endPos = document.cookie.indexOf(';', posValue);
		if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));
		else cookieValue = unescape(document.cookie.substring(posValue));
	}
	return (cookieValue);

};

// [Cookie] Returns ids of open nodes as a string

CTree.prototype.updateCookie = function() {
	var str = '';
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) {
			if (str) str += '.';
			str += this.aNodes[n].id;
		}
	}
	this.setCookie('co' + this.obj, str);
};

// [Cookie] Checks if a node id is in a cookie

CTree.prototype.isOpen = function(id) {
	var aOpen = this.getCookie('co' + this.obj).split('.');
	for (var n=0; n<aOpen.length; n++)
		if (aOpen[n] == id) return true;
	return false;
};

// If Push and pop is not implemented by the browser

if (!Array.prototype.push) {
	Array.prototype.push = function array_push() {
		for(var i=0;i<arguments.length;i++)
			this[this.length]=arguments[i];
		return this.length;
	}
};

if (!Array.prototype.pop) {
	Array.prototype.pop = function array_pop() {
		lastElement = this[this.length-1];
		this.length = Math.max(this.length-1,0);
		return lastElement;
	}
};