function email( v, linktext, subject, title )
{
  var r, i, c;
  v = unescape( v );
  r="";
  for( i = 0; i < v.length; i++ ) {
    c = v.charCodeAt( i );
    r += String.fromCharCode( ( c & 1 ) ? c + 5 : c - 5 );
  }
  document.write( '<a href="mailto:' + r + '?Subject=' + subject + 
    '" title="' + title + '">' + linktext + '</a>' );
}