<span class="reverse eml">moc.niamod@tset</span><br>

.reverse {
  unicode-bidi: bidi-override;
  direction: rtl;
}

.eml {
  display: inline;
}

function reverseEmails() {
  if (jQuery(".eml.reverse").length > 0) {
    jQuery(".eml.reverse").each(function() {
      var that  = jQuery(this);
      var email = that.text().split("").reverse().join("");
      that.removeClass("reverse");
      that.html("<a href='mailto:" + email + "'>" + email + "</a>");
    });
  }
}