关于用javascript动态添加删除文本框的问题

改了改btn.onclick
L@_@K
<!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>
    <title> new document </title>
    <meta name="generator" content="editplus" />
    <meta name="author" content="Gao YiXiang" />
    <meta name="email" content="[email protected]" />
    <meta name="keywords" content="javascript dhtml dom" />
    <meta name="description" content="I love web development." />
</head>
<body>
    <script   type="text/javascript">
var   count   =   0;
function   Add(num){
      count   +=   1;      var   File1   =   document.getElementById("file1");
      var   div   =   document.createElement("div");
      var   countTxt   =   document.createTextNode("文本框"+count);
      var   inputTxt   =   document.createElement("input");
      inputTxt.type   =   "text";
      inputTxt.value   =   document.getElementById(num).value;
      inputTxt.name   =   "txt"+count;
      var   inputTxta   =   document.createElement("input");
      inputTxta.type   =   "text";
      inputTxta.value   =   document.getElementById("a"+num).value;
      inputTxta.name   =   "txt"+count;
      var   inputTxtaa   =   document.createElement("input");
      inputTxtaa.type   =   "text";
      inputTxtaa.value   =   document.getElementById("aa"+num).value;
      inputTxtaa.name   =   "txt"+count;
      var   inputTxtaaa   =   document.createElement("input");
      inputTxtaaa.type   =   "text";
      inputTxtaaa.value   =   document.getElementById("aaa"+num).value;
      inputTxtaaa.name   =   "txt"+count;
      var   inputTxtaaaa   =   document.createElement("input");
      inputTxtaaaa.type   =   "text";
      inputTxtaaaa.value   =   document.getElementById("aaaa"+num).value;
      inputTxtaaaa.name   =   "txt"+count;
      var   btn   =   document.createElement("input");
      btn.type   =   "button";
      btn.value   =   "删除";
      btn.onclick   =   function()
      {
        this.parentNode.parentNode.removeChild(this.parentNode);        var n = File1.getElementsByTagName("div");
        for(var k=0; k<n.length; k++)
        {
            n[k].firstChild.nodeValue = "文本框"+(k+1);
        }
        count -= 1;
      }      div.appendChild(countTxt);
      div.appendChild(inputTxt);
      div.appendChild(inputTxta);
      div.appendChild(inputTxtaa);
      div.appendChild(inputTxtaaa);
      div.appendChild(inputTxtaaaa);
      div.appendChild(btn);
      File1.appendChild(div);
}
    </script>
<div   id="file1"> </div><input   name="xiyaoname"   id="1"   value="Add"   type="button"   onclick="Add(1);"   />
<input   name="hiddenField"   type="hidden"   id="a1"   value="sex"   />
<input   name="hiddenField"   type="hidden"   id="aa1"   value=" birthday"   />
<input   name="hiddenField"   type="hidden"   id="aaa1"   value="shenggao"   />
<input   name="hiddenField"   type="hidden"   id="aaaa1"   value="tizhong"   />
</body>
</html>