function switcher() {
  key = document.getElementById("switcher_key")
  info = document.getElementById("switcher_info")
  image = document.getElementById("switch_image")

  if (key.className == "switcher" && info.className == "switcher")  {
    if (key.style.display == "block") {
      key.style.display = "none"
      info.style.display = "block"
      image.src="/bank-webapp/images/key.gif"
      image.alt="View the key."
      image.title="View the key."
    } else {
      key.style.display = "block"
      info.style.display = "none"
      image.src="/bank-webapp/images/info.gif"
      image.alt="View detailed information about the selected node."
      image.title="View detailed information about the selected node."
    }
  }
}