<input type=radio onclick="dociment.all.tba.style.display='block';dociment.all.tbb.style.display='none'">A<input type=radio onclick="dociment.all.tbb.style.display='block';dociment.all.tba.style.display='none'">B<table id=tba>
<tr><td>AAA</td></tr></table><table id=tbb>
<tr><td>BBB</td></tr></table>
<tr><td>AAA</td></tr></table><table id=tbb>
<tr><td>BBB</td></tr></table>
<input type=radio name=a onclick="document.all.tba.style.display='block';document.all.tbb.style.display='none'">A<input type=radio name=a onclick="document.all.tbb.style.display='block';document.all.tba.style.display='none'">B<table id=tba>
<tr><td>AAA</td></tr></table><table id=tbb>
<tr><td>BBB</td></tr></table>
<input type=radio name=a checked=1 onclick="document.all.tba.style.display='block';document.all.tbb.style.display='none'">A<input type=radio name=a onclick="document.all.tbb.style.display='block';document.all.tba.style.display='none'">B
</form>
<table id=tba>
<tr><td>AAA</td></tr></table><table id=tbb >
<tr>
<td>BBB</td>
</tr>
</table>
<script>document.all.tba.style.display='block';document.all.tbb.style.display='none'</script>
这样可能更符合习惯
<input type=radio name=a onclick="document.all.tba.style.display='block';document.all.tbb.style.display='none'">A<input type=radio name=a onclick="document.all.tbb.style.display='block';document.all.tba.style.display='none'">B<div id=tba>
<table>
<tr><td>AAA</td></tr></table>
</div><div id=tbb style='display:none'>
<table>
<tr><td>BBB</td></tr></table>
</div>