动态添加无限级树

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昨天闲来无聊写来玩玩。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script language="javascript">

 var cd=document.all.d0;
 var tag=1;
 function setCd(obj,evt)
 {
 var e=(evt)?evt:window.event;
if (window.event) {
e.cancelBubble=true;
} else {
//e.preventDefault();
e.stopPropagation();
}
  cd=obj;
 }
 function addDiv()
 { 
  if(cd==null)
  {
   cd=document.all.d0;
  }
  var cs=eval("o"+cd.id.substr(1));
  var ct=1+cs.value*1;
  var strtext="";
  for(i=0;i<ct;i++)
  {
   strtext+="&nbsp;&nbsp;";
  }
  strtext+=document.all.textfield.value;
 
  cd.innerHTML+="<div id='d"+tag+"'ondblclick='setCd(this,event)'><input type='hidden' id='o"+tag+"' value='"+ct+"'/>"+strtext+"</div>";
  tag++;
 }
 
</script>
</head>

<body>
<table width="668" height="151" border="1">
  <tr>
    <td width="326"><div id="d0" ondblclick="setCd(this,event)" style="z-index:-1">
  总节点
 <input type="hidden" id="o0" value="0" />
 </div></td>
    <td width="326"><label>
      <input type="text" name="textfield" />
      <input type="button" name="Submit" value="按钮" onclick="addDiv()" />
    </label></td>
  </tr>
</table>
</body>
</html>

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