//url指向你要添加的局部页面；$('#imageup').html(data)这个是获取id为imageup的<tr>

<script type="text/javascript">
$(window).ready(function () {
var url = "../babymanage/imageup.aspx";
$.get(url,{},function (data) {
$('#imageup').html(data);
});
});
</script>

<tr>
<td class="word02" width="26%" height="37">
<div align="right">
上传身份证：

</div>
</td>
</tr>

<tr id="imageup"> </tr>