colspan rowspan学习

      <table border="1px">
	<tr>
		<td rowspan="2">rowspan</td>
		<td rowspan="2">rowspan</td>
		<td colspan="3">colspan</td>
		<td rowspan="2">rowspan</td>
	</tr>
	<tr>
		<td>1</td>
		<td>2</td>
		<td>2</td>
	</tr>
	<tr>
		<td>1</td>
		<td>2</td>
		<td>2</td>
		<td>1</td>
		<td>2</td>
		<td>2</td>
	</tr>
	<tr>
		<td>1</td>
		<td>2</td>
		<td>2</td>
		<td>1</td>
	</tr>
</table>