function showEM(userName, emServer) {
         /*
             The showEM() function displays a link to the user's e-mail address.
             The text of the user and e-mail server names are entered in
             reverse order to thwart e-mail harvesters.
         */

         userName = stringReverse(userName);  // reverse the text of the useName parameter
         emServer = stringReverse(emServer);  // reverse the text of the emServer parameter

         var emLink = userName + "@" + emServer; // combine the text of userName and emServer
         document.write("<a href='mailto:" + emLink + "'>");
         document.write(emLink);
         document.write("</a>");
      }