-<xsl:when test="starts-with(@href, 'http:') or starts-with(@href, 'https:') or starts-with(@href, 'news:') or starts-with(@href, 'mailto:')">
+<xsl:when test="starts-with(@href, 'http:') or starts-with(@href, 'https:') or starts-with(@href, 'ftp:') or starts-with(@href, 'news:') or starts-with(@href, 'mailto:')">