[xsl] Introducing a comma.

[Ram <sram_30@xxxxxxxxx>]

Hi,
Can anyone help me out in introducing a comma?
The xml source is:
<signature>signature <identifier>DNSQuery</identifier>
   <in>in<long>long</long><identifier>a</identifier></in>
   <in>in<string>string</string><identifier>b</identifier></in>
   <in>in<float>float</float><identifier>c</identifier></in>
</signature>

I've to introduce a comma between the first and second 'in',and between
the second and third 'in' but not after the third 'in'.

Thanks and regards,
Ram


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