Filling out a table row

I have a node set that I need to get into a table with 5 columns and
how ever many rows there needs to be.  I have the basic code working.
The problem I have is the table is not finished when the node set is
not a multiple of 5.  Here is a same dataset:

<images>
  <image name="a">1</image>
  <image name="b">2</image>
  <image name="c">3</image>
  <image name="d">4</image>
  <image name="e">5</image>
  <image name="f">6</image>
  <image name="g">7</image>
  <image name="h">8</image>
</images>

<xsl:template match="images">
<table border="3">
	<xsl:for-each select="image[position() mod 5 = 1]">
		<xsl:text>&#10;</xsl:text>
		<tr>
			<xsl:for-each select=".|following-sibling::image[position() &lt; 5]">
				<td><xsl:value-of select="concat(@name,':',.)"/></td>
			</xsl:for-each>
		</tr>
	</xsl:for-each>
	<xsl:text>&#10;</xsl:text>
</table>
</xsl:template>

I would simply like to finish off the table with the correct number of
<td>&NBSP;</td>, now do I do that?