function open_travel(name, base, minbook, notice)
  {
  path = "./travelabc.php?name=" + name + "&base=" + base + "&minbook=" + minbook + "&notice=" + notice;
  w = 550;
  h = 450;
  wname = "travel";
  // initialize winX and winY to default values
  // for cases where Screen object isn't supported 
  var winX = 50;
  var winY = 50;
  var resize = "";
  var scroll = "";
  // only set new values if 4.0 browser
  if (parseInt(navigator.appVersion) >= 4)
    {
    winX = (screen.availWidth - w)*.5;
    winY = (screen.availHeight - h)*.5;
    }
  resize = "resizable=yes,";
  scroll = "scrollbars=yes,";
  newWindow = window.open("",wname,"titlebar=yes,location=no,"+resize+scroll+"width="+w+",height="+h+",left="+winX+",top="+winY);
  newWindow.close();
  newWindow = window.open(path,wname,"titlebar=yes,location=no,"+resize+scroll+"width="+w+",height="+h+",left="+winX+",top="+winY);
  }