怎么实现JS控制disabled="disabled" 选中单选按钮后文本框为可输入状态啊 _JavaScript

怎样实现JS控制disabled="disabled" 选中单选按钮后文本框为可输入状态啊？
   <%
if rs.EOF and rs.BOF then
   response.write "no message"
else
   Do Until rs.EOF
   if getpychar(rs("name_cc"))=wchar then
%>
    <tr>
      <td height="25" align="center"><%=Rs("id")%></td>
      <td align="center">无图片</td>
      <td align="center"><%If Not Rs("name_cc")="" then response.Write rs("name_cc") else Response.Write "无"%></td>
      <td align="center"><%If Not Rs("units_cc")="" then Response.Write rs("units_cc") else Response.Write "无"%></td>
      <td align="center"><%If Not Rs("model_cc")="" then Response.Write rs("model_cc") else Response.Write "无"%></td>
      <td align="center"><input name="amount" type="text" disabled="disabled"  id="amount" value="0" size="4" maxlength="255"></td>
      <td align="center"><%If Not Rs("price_cc")="" then Response.Write rs("price_cc") else Response.Write "无"%></td>
      <td align="center"><input name="checkboxid" type="checkbox" id="checkboxid" value=<%=rs("id")%>  onClick=""/>
      <label for="checkboxid"></label></td>
    </tr>
     <%
End If
      rs.MoveNext
   Loop
End if
rs.close
Set rs = Nothing

------解决方案--------------------
<td align="center"><input name="checkboxid" type="checkbox" id="checkboxid" value=<%=rs("id")%>  onclick="SetDisabled(this)"/>
      <label for="checkboxid"></label></td>

<script>
    function SetDisabled(cb) {
        var input = cb.parentNode.parentNode.getElementsByTagName('input')[0];
        alert(input)
        input.disabled =! cb.checked;
  }
</script>
------解决方案--------------------

引用:

干脆直接不要提示好了。。。怎么弄啊。版主大哥。。。

不要提示，就把alert（input）这句去掉