[xsl] Ignore Tags

["vasu deva" <vsd18@xxxxxxxxxxxxxx>]

hi

I have a problem .. it goes like this
an xml file of thie folowing format

<root>
 <child id = '1'>happy</child>
 <child id = '2'>happy</child>
 <child id = '3'>happy</child>
 <child id = '1'>sad</child>
 <child id = '2'>sad</child>
 <child id = '3'>sad</child>
</root>

my problem is that when i go through each of the child elements, 
then i should ignore the duplicates that is once child id = '1' is 
encountered, the second time it should be ignored.. so effectively 
the result should be
all happy 'childs' .. Is there a way to do that??
please help me
vsd





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