各位,帮我一下
<table id="tb1" width="100%" border="1" cellspacing="0" cellpadding="0" style="VISIBILITY: hidden">
<tr>
<td> </td>
</tr>
</table>
<table id="tb2" width="100%" border="1" cellspacing="0" cellpadding="0">
<tr>
<td onclick="tb1.style.VISIBILITY='visible'"><a href="#">fdsffdsf</a></td>
</tr>
</table>
这样写为什么tb1没有显示出来,也没有报错?