这个怎么取??
<BODY>
<form name=a id=a>
<table name="ta1" id="ta1">
<tr><td><input type=text name="t1" id="t1" value="11"></td></tr>
<tr><td>
<form>
<table name="ta2" id="ta2">
<tr><td>
<input type=text name="t2" id="t2" value="22">
</td></tr>
</table>
</form name=b id=b>
</td></tr>
</table>
</form>
</BODY>
如何取得text类型t1,t2的值??