function init() {

}

function referFriend() {
  var url = "/refer.php";
  if (referFriend.window == null || referFriend.window.closed) {
    referFriend.window = window.open(url,"referFriendWin","width=400,height=570,scrollbars=yes,resizable=no,toolbar=no,status=no");
  } else {
    referFriend.window.document.location=url;
    referFriend.window.focus();
  }
}