function onoff1 () {
  if (document.getElementById)
    document.getElementById("Rt1").style.display = "none";
    document.getElementById("Rt1weg").style.display = "";
    }
function on1 () {
  if (document.getElementById)
    document.getElementById("Rt1").style.display = "";
    document.getElementById("Rt1weg").style.display = "none";
    }
function onoff2 () {
  if (document.getElementById)
    document.getElementById("Rt2").style.display = "none";
    document.getElementById("Rt2weg").style.display = "";
    }
function on2 () {
  if (document.getElementById)
    document.getElementById("Rt2").style.display = "";
    document.getElementById("Rt2weg").style.display = "none";
    }
function onoff3 () {
  if (document.getElementById)
    document.getElementById("Rt3").style.display = "none";
    document.getElementById("Rt3weg").style.display = "";
    }
function on3 () {
  if (document.getElementById)
    document.getElementById("Rt3").style.display = "";
    document.getElementById("Rt3weg").style.display = "none";
    }
function onoff4 () {
  if (document.getElementById)
    document.getElementById("Rt4").style.display = "none";
    document.getElementById("Rt4weg").style.display = "";
    }
function on4 () {
  if (document.getElementById)
    document.getElementById("Rt4").style.display = "";
    document.getElementById("Rt4weg").style.display = "none";
    }
function onoff5 () {
  if (document.getElementById)
    document.getElementById("Rt5").style.display = "none";
    document.getElementById("Rt5weg").style.display = "";
    }
function on5 () {
  if (document.getElementById)
    document.getElementById("Rt5").style.display = "";
    document.getElementById("Rt5weg").style.display = "none";
    }