[xsl] count() function

["james walker" <jameswalkerandy@xxxxxxxxxxx>]

I am using a count function to count th enumber of <title> tgas in an xml 
file which contain a certain starting letter.
e.g. $alph = 'A'
<xsl:variable name="countletter" select="count(number of titles with a 
starting letter of a)"/>
<xsl:if test="($countletter > 0)">
<p><xsl:value-of select="$alph"/></p>
</xsl:if>

How would i write the test case for the xsl:if?
would u do some sort of string comparison like not(starts-with($countletter, 
'0'))??

i can't use keys as the xml  is coming from multiple files.
cheers
james

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