用JavaScript生成树结构（二）

用JavaScript生成树结构（二）

下面给出完整的演示程序：
<html>
<head>
<title>Tree</title>
<META content="text/html; charset=gb2312" http-equiv=Content-Type>
<style type=text/css>
.p1{FONT-FAMILY:宋体;FONT-SIZE:14px;COLOR:#0000FF}
A{FONT-FAMILY:宋体; FONT-SIZE:14px;TEXT-DECORATION:none;COLOR:#0000FF}
IMG{VERTICAL-ALIGN:text-top}
</style>
<script language=javascript>
<!--
function w(txt){document.write(txt);}
var root,ID=0;
var na=new CHILD();
var gif="/images/";
var curfocus;
function CHILD()  //节点孩子集合定义
{
this.total=0;
this.Add=Add;
this.Delete=Delete;
return this;
}
function Add(childnode)
{
this[this.total]=childnode;
this.total++;
}
function Delete(childnode)
{
for(var i=0;i<this.total;i++)
  if(childnode==this[i])break;
if(i!=this.total)this.total--;
for(;i<this.total;i++)
  this[i]=this[i+1];
}
function NODE(name) //节点定义
{
this.id=ID;
this.name=name;
this.imgopsm="";
this.imgclbg="";
this.imgclsm="";
this.parent="";
this.child=new CHILD();
this.link="";
this.target="";
this.display=true;
na.Add(this);
ID++;
return this;
}