/*
   New Perspectives on JavaScript
   Tutorial 1
   Tutorial Case


   Function List:
   stringReverse
      Used to reverse the order of characters in a text string

*/






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){
  userName = stringReverse(userName);
  emServer = stringReverse(emServer);
  var emLink = userName+"@"+emServer;
  document.write("<a href='mailto:"+emLink+"' class='email'>");
  document.write(emLink);
  document.write("</a>");
}