function set_focus(form_name, elt_name) {
  var oForm
  var oElt

  oForm = document.forms[form_name]
  if (!oForm) return

  oElt = oForm[elt_name]
  if (!oElt) return

  oElt.focus()

  return
}

function show_image(file_name, w, h, name, path) {
  var oWnd = window.open(path + "show_image.php?filename=" + file_name, name, "width=" + w + ",height=" + h)
	return
}