function pop_up(URL,width,height) {
  if (width == null) { width = 650; }
  if (height == null) { height = 650;}
  day = new Date();
  id = day.getTime();
  eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=" + width + ",height=" + height + ",left = 290,top = 162');");
}