[xsl] Disable showing of NaN

["Mazza, Glen" <glen.mazza@xxxxxxx>]

Simple question (no flaming here, I did check "Math" and "Formatting" off
the XSL FAQ for the answer), how do I disable the showing of NaN if I am
doing a division by zero?

I know there is a xsl:decimal-format command with a NaN parameter I can set
to "", but I don't know how to integrate it with format-number() as follows:

<td align="right">
<xsl:value-of select="format-number(total div sum(//ports/port/total) * 100,
'#.00')"/>
</td>

Thanks,
Glen Mazza
glen.mazza@xxxxxxx

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