clickable link

<xsl:choose>
    <xsl:when test="@type='uri' or substring(normalize-space(text()), 0, 5) = 'http'">
        <a href="{text()}">
            <xsl:value-of select="text()"/>
        </a>
    </xsl:when>
    <xsl:otherwise>
        <xsl:value-of select="text()"/>
    </xsl:otherwise>
</xsl:choose>