Mulitple error messagees.

Hi,
	In my xsl, I have a error template which will be called from many
templates whenever there is an error.
At the end of the xsl, I want to return that error message to the clinet. 
	My problem here is, how can I store all the error messages with in
the error template, which has been
called more than once from other templates.

example:

<xsl:template name="ERROR">
	<xsl:param name="error_str" />
</xsl:template>


<xsl:template name="A">
	<xsl:call-template name="ERROR">
		<xsl:with-param name="error_str" select="'First error'" />
	</xsl:call-template>
</xsl:template>

<xsl:template name="B">
	<xsl:call-template name="ERROR">
		<xsl:with-param name="error_str" select="'Second error'" />
	</xsl:call-template>
</xsl:template>


Here I want store all the error messages and farward it to client at the end
of the processing.

Any Ideas?

Thanks,
Raj..

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