var offset = 7;

function encode(str)
{
  var encoded = "";
  for (var i = 0; i < str.length; i++)
  {
    var c = str.charCodeAt(i) + offset;
    encoded += c ;
    if (i < str.length - 1) encoded += ",";
  }
  document.write(encoded); 
}

function decode()
{
  var str = "";
  for (var i = 0; i < arguments.length; i++)
  {
    var p = arguments[i] - offset;
    str += String.fromCharCode(p)
  }
	document.write('<a href="mailto:' + str + '">' + str + '</a>');
}

function decodeWithCustomDisplay(email, display)
{
  var str = "";
	email = email.split(",");
	
  for (var i = 0; i < email.length; i++)
  {
    var p = email[i] - offset;
    str += String.fromCharCode(p)
	}
	document.write('<a href="mailto:' + str + '">' + display + '</a>');
}