[求助] ja不运行的怎么一回事
程序如下: 
程序代码：<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.">
<html xmlns="http://www.">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title><script language="JavaScript">
function addOrderRow(tab,rowNum,colNum,obj,addType)
{
var detailbody=document.getElementById(tab);
var row = document.createElement("tr");
var newrow=obj.parentNode.parentNode.innerHTML;
if(addType=='add'){
var row = detailbody.insertRow();
for(var i=0;i<obj.parentNode.parentNode.childNodes.length;i++){
var cell=row.insertCell();
cell.innerHTML=obj.parentNode.parentNode.childNodes[i].innerHTML;
//如果表单中有值就清空
for(var k=0;k<cell.childNodes.length;k++)
{
if (cell.childNodes[k].type == 'text') { cell.childNodes[k].value = ''; }
if (cell.childNodes[k].type == 'textarea') { cell.childNodes[k].value = ''; }
if (cell.childNodes[k].type == 'checkbox') { cell.childNodes[k].checked = false; }
if (cell.childNodes[k].type == 'radio') { cell.childNodes[k].checked = false; }
if (cell.childNodes[k].type == 'select-multiple') { cell.childNodes[k].selectedIndex = -1; }
if (cell.childNodes[k].type == 'select-one') { cell.childNodes[k].selectedIndex = -1; }
}
}
obj.parentNode.parentNode.childNodes[0].innerHTML+='<input type=hidden id=text'+(detailbody.childNodes.length+1)+'>';
}else if(addType=='copy'){
//copy
var row = detailbody.insertRow();
for(var i=0;i<obj.parentNode.parentNode.childNodes.length;i++){
var cell=row.insertCell();
cell.innerHTML=obj.parentNode.parentNode.childNodes[i].innerHTML;
}
obj.parentNode.parentNode.childNodes[0].innerHTML+='<input type=hidden id=text'+(detailbody.childNodes.length+1)+'>';
}else{
//delete
if(confirm("确定删除此行数据吗?")){
obj.parentNode.parentNode.parentNode.removeChild(obj.parentNode.parentNode);
}else{
return false;
}
}
//只显示最后一个add按钮
var leg = detailbody.childNodes.length;
if(leg>1){
for(var j=0;j<leg-2;j++){
document.getElementsByName("btnAdd")[j].style.visibility="hidden";
}
document.getElementsByName("btnAdd")[leg-2].style.visibility="visible";
}
//显示除第一个外所有delete按钮
if(leg>1){
for(var j=1;j<leg-1;j++){
document.getElementsByName("btnDelete")[j].style.visibility="visible";
}
}
}
function show()
{
document.all.sum.value=parseInt(document.all.price.value)*parseInt(document.all.quantity.value);
}
</script></head>
<body>
<form id="form1" name="form1" method="post" action="untitled4.asp">
<div id="outlineChildaaa" style="cursor:auto" >
<table width="700" border="1" cellpadding="5" cellspacing="0" bordercolor="#E8E09F" id="detailItem">
<tbody id="detailItemBody">
<tr>
<td width="38%" nowrap="" bgcolor="#F3EFCD" class="STYLE7 td1"><strong>名称</strong></td>
<td width="19%" nowrap="" bgcolor="#F3EFCD" class="STYLE7 td1"><strong>单价</strong></td>
<td width="10%" nowrap="" bgcolor="#F3EFCD" class="STYLE7 td1"><strong>数量</strong></td>
<td width="10%" nowrap="" bgcolor="#F3EFCD" class="td1 STYLE7"><strong>价格</strong></td>
<td width="23%" bgcolor="#F3EFCD" class="td1 STYLE7"><strong>操作
</strong></td>
</tr>
<tr id="tr1">
<td width="38%" id="td1" >
<input type="hidden" name="SampleOrderContentID"/>
<input type="text" size="30" name="name" id="ItemNo"/></td>
<td width="19%" nowrap=""><input type="text" size="10" name="price" id="ItemNo1"
onpropertychange"show1()" /></td>
<td width="10%" nowrap=""><input type="text" size="6" name="quantity" id="Nickname1"
onpropertychange"show1()"/></td>
<td width="10%" nowrap=""><input type="text" size="6" name="sum" id="cleats1"
onpropertychange"show1()" /></td>
<td width="23%" nowrap="">
<input type="button" onclick="addOrderRow('detailItemBody',2,11,this,'add')" value="增加" id="btnAdd1" name="btnAdd"/>
<input type="button" onclick="addOrderRow('detailItemBody',2,11,this,'copy')" value="复制" id="btnCopy" name="btnCopy"/>
<input type="button" onclick="addOrderRow('detailItemBody',2,11,this,'delete')" value="删除" id="btnDelete" name="btnDelete" style="visibility:hidden "/></td>
</tr>
</tbody>
</table>
<table width="700" border="0">
<tr>
<td><div align="center">
<label>
<input type="submit" name="Submit" value="提交" />
</label>
</div></td>
</tr>
</table>
</div>
</form>
</body>
</html>
哪里出错了呢
