function stringReverse(textString) {
   if (!textString) return '';
   var revString='';
   for (i = textString.length-1; i>=0; i--)
       revString+=textString.charAt(i)
   return revString;
}

function showEM(userName, emServer)
  /*The showEM() function displays a link to the user's email address.  The username and email server name are entered in reverse order to thwart email harvesting programs.
  */ 
  {
   userName = stringReverse(userName);  //undo the reversed username
   emServer = stringReverse(emServer);  //undo the reversed servername
   var emLink = userName+"@"+emServer;  //combine the username and server name
   document.write("<a href='mailto:"+emLink+"'>");
   document.write(emLink);
   document.write("</a>");
  }