L@_@K <body>
<input type="button" id="btnAdd" value="add" /><br />
<script type="text/javascript">
<!--
var oAdd = document.getElementById("btnAdd");
oAdd.onclick = function ()
{
var oInput = document.createElement("input");
oInput.type = "text";
document.body.appendChild(oInput);
var oBr = document.createElement("br");
document.body.appendChild(oBr);
};
//-->
</script>
</body>
<input type="button" id="btnAdd" value="add" /><br />
<script type="text/javascript">
<!--
var oAdd = document.getElementById("btnAdd");
oAdd.onclick = function ()
{
var oInput = document.createElement("input");
oInput.type = "text";
document.body.appendChild(oInput);
var oBr = document.createElement("br");
document.body.appendChild(oBr);
};
//-->
</script>
</body>
function add()
{
option = new Array();
proportion = new Array();
str='<table>';
str=str+'<tr align=center valign=middle bgcolor=#FFFFFF>';
str=str+'<td width="100%" height="25"><input type="text" name=proportion></td>';
str=str+'<td width="100%" height="25"><input type="button" name=del onclick="this.parentNode.parentNode.parentNode.deleteRow(this.parentNode.parentNode.rowIndex)" value="删除"></td>';
str=str+'</tr></table>';
window.upid.innerHTML+=str+'';
}
</script>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form name="myform" onsubmit="javascript:return check()">
<table>
<tr>
<td>
<input name="Submit2" type="button" onclick="javascript:add()" value="增加">
</td>
</tr>
<tr>
<td>
<div id="upid"></div>
</td>
</tr>
</table>
</form>
</body>
</html>