/*
 * MAILTO MODULE JS
 * @version 1.0
 */

String.prototype.rot13 = function(){
    return this.replace(/[a-zA-Z]/g,
      function(c){
        return String.fromCharCode((c <= "Z" ? 90 : 122) >= (c = c.charCodeAt(0) + 13) ? c : c - 26);
      }
    );
}