// JavaScript Document 
 //部分扩展函数 
 var $C = function(_tag){return document.createElement(_tag);} 
 var $ = function(_id){return document.getElementById(_id);} 
 String.prototype.trim = function(value,icase){return this.replace(/(^\s+)|(\s+$)/g,"");} 
 Array.prototype.indexOf = function(value){for(var i=0,l=this.length;i <l;i++)if(this[i]==value)return i;return -1;} 
 Array.prototype.Remove = function(value){for(var i=0,l=this.length;i <l;i++)if(this[i]==value){return this.splice(i,1);}} 
 Array.prototype.Replace = function(value,source){for(var i=0,l=this.length;i <l;i++)if(this[i]==value){this[i]=source;break;}} 
 Array.prototype.ReplaceAll = function(value,source){for(var i=0,l=this.length;i <l;i++)if(this[i]==value){this[i]=source;}} 
 Array.prototype.Clear = function(){this.splice(0,this.length);} 
  
  
 var System = {}; 
 System.UI = {} 
 System.UI.ntreeNode = SYSTEM_UI_NTREENODE; 
  
 //树结点类 
 function SYSTEM_UI_NTREENODE() 
 { 
 	classType = "SYSTEM_UI_NTREENODE"; 
 	this.initialize.apply(this,arguments); 
 } 
 SYSTEM_UI_NTREENODE.prototype = { 
 	initialize:function(_parent,_text)//初始化类 _parent是父节点 _text是本节点的文本 
 	{ 
 		this.top = _parent.top; 
 		this.parent = _parent; 
 		this._text = _text; 
 		this._expand = false; 
 		this.children = []; 
 		this.initElement(); 
 		this.setElement(); 
 		this.initEvent(); 
 		this.text(_text); 
 		this.parent.children.push(this); 
 		this.resizeBar(); 
 	}, 
 	initElement:function()//初始化元素 
 	{ 
 		this.mainObj = $C("table");//节点主载体 
 		var otbody = $C("tbody");//tablebody 
 		var otr = $C("tr");//tr 
 		this.pikeTd = $C("td");//纵向连结线区域 
 		this.infoTd = $C("td");//内容区域 
 		this.childTd = $C("td"); 
 		this.childField = $C("div");//子节点容器 
 		this.infoField = $C("span");//内容区域