function OpenWindow(obj, w, h) {
  var width = w == null ? 800 : w;
  var height = h == null ? 600 : h;
  var left = (screen.width - width) / 2;
  var top = (screen.height - height) / 2;
	var others = w == null ? ", toolbar=yes, location=yes, status=yes, menubar=yes, scrollbars=yes, resizable=yes" : "";
  var props = "width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + others;
  var newwindow = window.open(obj.href, "_new", props);
  if (newwindow == null)
    return true;
  else
    return false;
}