confused with xml and minidom

[Guy Robinson]

Hello,

I've got an xhtml file which contains a number of html tables.

I want to parse these tables and based on values in the TD cells of the 
body of the table delete the row and replace it with additional rows. 
Then write the xhtml file to a new file.

so input.xhtml

<table>
	<tbody>
		<tr>
			<td>param</td>
			<td>param2</td>
			<td>param3</td>
		</tr>
	</tbody>
</table>

becomes output.xhtml

<table>
	<tbody>
		<tr>
			<td>r1v1</td>
			<td>r1v2</td>
			<td>r1v3</td>
		</tr>
		<tr>
			<td>r2v1</td>
			<td>r2v2</td>
			<td>r2v3</td>
		</tr>
		<tr>
			<td>r3v1</td>
			<td>r3v2</td>
			<td>r3v3</td>
			
		</tr>
		... etc
	</tbody>
</table>

if I get the table by:

xmldoc = minidom.parse('templates/input.xhtml')
table = xmldoc.getElementsByTagName('table')

how do I then get the first row of with the parameters. Delete this row 
and insert the new rows?

table.childnode('tbody').getElementsByTagname('tr') doesn't work.

Any help or examples of what I'm trying to do appreciated.

Thanks,

Guy