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<script type="text/javascript">document.write(
"<?php
    // We run str_rot13 to email link to conceil it from spam bots
    // then we make it clear for browsers using javascript.
    // If client doesn't have javascript installed, hide css: .ebg13 (= obfuscated .rot13)
    echo str_rot13( "<a class='rot13' href='mailto:" . $email . "'>" . $email . '</a>' );
?>".replace(/[a-zA-Z]/g, function(c){return String.fromCharCode((c<="Z"?90:122)>=(c=c.charCodeAt(0)+13)?c:c-26);}));
</script>
<noscript>firstname.lastname@example.com</noscript>