JS中tb.insertRow()在谷歌中的有关问题

<div>

        <table rules="cols" width="100%" frame="above" style="border-width: 1px" id="PropertyTable">

            <tr>

                <td>

                    新增

                </td>

                <td>

                    排序

                </td>

                <td width="100px">

                    删除

                </td>

            </tr>

            <tr>

                <td>

                    <input type="text" value="123"/>

                </td>

                <td>

                    <input type="text" value="333"/>

                </td>

                <td>

                    <input type="text" value="444"/>

                </td>

            </tr>

        </table>

                <input type="button" name="another" value="zxc" onclick="AddAnother()" />