function menue() {
  if (document.getElementById("knopf2a").style.visibility == "visible") {
    document.getElementById("knopf2").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2a").style.top = "130";
    document.getElementById("knopf2a").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2a").style.visibility = "hidden";
    document.getElementById("knopf2b").style.top = "160";
    document.getElementById("knopf2b").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2b").style.visibility = "hidden";
    document.getElementById("knopf2c").style.top = "190";
    document.getElementById("knopf2c").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2c").style.visibility = "hidden";
    document.getElementById("knopf2d").style.top = "220";
    document.getElementById("knopf2d").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2d").style.visibility = "hidden";
    document.getElementById("knopf2e").style.top = "250";
    document.getElementById("knopf2e").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf2e").style.visibility = "hidden";
    document.getElementById("knopf2aa").style.top = "160";
    document.getElementById("knopf2aa").style.visibility = "hidden";
    document.getElementById("knopf2ab").style.top = "190";
    document.getElementById("knopf2ab").style.visibility = "hidden";
    document.getElementById("knopf2ba").style.top = "190";
    document.getElementById("knopf2ba").style.visibility = "hidden";
    document.getElementById("knopf2bb").style.top = "220";
    document.getElementById("knopf2bb").style.visibility = "hidden";
    document.getElementById("knopf2ca").style.top = "220";
    document.getElementById("knopf2ca").style.visibility = "hidden";
    document.getElementById("knopf2da").style.top = "250";
    document.getElementById("knopf2da").style.visibility = "hidden";
    document.getElementById("knopf2db").style.top = "280";
    document.getElementById("knopf2db").style.visibility = "hidden";
    document.getElementById("knopf2ea").style.top = "280";
    document.getElementById("knopf2ea").style.visibility = "hidden";
    document.getElementById("knopf3").style.top = "130px";
    document.getElementById("knopf4").style.top = "160px";
  } else {
    document.getElementById("knopf2a").style.visibility = "visible";
    document.getElementById("knopf2b").style.visibility = "visible";
    document.getElementById("knopf2c").style.visibility = "visible";
    document.getElementById("knopf2d").style.visibility = "visible";
    document.getElementById("knopf2e").style.visibility = "visible";
    document.getElementById("knopf2").style.backgroundColor = "#99CC00";
    document.getElementById("knopf3").style.top = "280px";
    document.getElementById("knopf4").style.top = "340px";
  }
  menue5();
}


function menue2(nummer) {
  if (nummer == 1) {
    if (document.getElementById("knopf2aa").style.visibility == "visible") {
      document.getElementById("knopf2a").style.backgroundColor = "#FFFFFF";
      document.getElementById("knopf2aa").style.visibility = "hidden"
      document.getElementById("knopf2ab").style.visibility = "hidden"
    } else {
      document.getElementById("knopf2a").style.backgroundColor = "#99CC00";
      document.getElementById("knopf2aa").style.visibility = "visible"
      document.getElementById("knopf2ab").style.visibility = "visible"
    }
  }
  if (nummer == 2) {
    if (document.getElementById("knopf2ba").style.visibility == "visible") {
      document.getElementById("knopf2b").style.backgroundColor = "#FFFFFF";
      document.getElementById("knopf2ba").style.visibility = "hidden"
      document.getElementById("knopf2bb").style.visibility = "hidden"
    } else {
      document.getElementById("knopf2b").style.backgroundColor = "#99CC00";
      document.getElementById("knopf2ba").style.visibility = "visible"
      document.getElementById("knopf2bb").style.visibility = "visible"
    }
  }
  if (nummer == 3) {
    if (document.getElementById("knopf2ca").style.visibility == "visible") {
      document.getElementById("knopf2c").style.backgroundColor = "#FFFFFF";
      document.getElementById("knopf2ca").style.visibility = "hidden"
    } else {
      document.getElementById("knopf2c").style.backgroundColor = "#99CC00";
      document.getElementById("knopf2ca").style.visibility = "visible"
    }
  }
  if (nummer == 4) {
    if (document.getElementById("knopf2da").style.visibility == "visible") {
      document.getElementById("knopf2d").style.backgroundColor = "#FFFFFF";
      document.getElementById("knopf2da").style.visibility = "hidden"
      document.getElementById("knopf2db").style.visibility = "hidden"
    } else {
      document.getElementById("knopf2d").style.backgroundColor = "#99CC00";
      document.getElementById("knopf2da").style.visibility = "visible"
      document.getElementById("knopf2db").style.visibility = "visible"
    }
  }
  if (nummer == 5) {
    if (document.getElementById("knopf2ea").style.visibility == "visible") {
      document.getElementById("knopf2e").style.backgroundColor = "#FFFFFF";
      document.getElementById("knopf2ea").style.visibility = "hidden"
    } else {
      document.getElementById("knopf2e").style.backgroundColor = "#99CC00";
      document.getElementById("knopf2ea").style.visibility = "visible"
    }
  }
  menue3();
}

function menue3() {
  if (document.getElementById("knopf2aa").style.visibility == "visible") {
    hoehe1 = 60;
  } else {
    hoehe1 = 0;
  }
  if (document.getElementById("knopf2ba").style.visibility == "visible") {
    hoehe2 = 90;
  } else {
    hoehe2 = 30;
  }
  if (document.getElementById("knopf2ca").style.visibility == "visible") {
    hoehe3 = 60;
  } else {
    hoehe3 = 30;
  }
  if (document.getElementById("knopf2da").style.visibility == "visible") {
    hoehe4 = 90;
  } else {
    hoehe4 = 30;
  }
  if (document.getElementById("knopf2ea").style.visibility == "visible") {
    hoehe5 = 60;
  } else {
    hoehe5 = 30;
  }
  if (document.getElementById("knopf4a").style.visibility == "visible") {
    hoehe6 = 270;
  } else {
    hoehe6 = 60;
  }

  document.getElementById("knopf2aa").style.top = 160;
  document.getElementById("knopf2ab").style.top = 160+30;
  document.getElementById("knopf2b").style.top = 160+hoehe1;
  document.getElementById("knopf2ba").style.top = 160+hoehe1+30;
  document.getElementById("knopf2bb").style.top = 160+hoehe1+60;
  document.getElementById("knopf2c").style.top = 160+hoehe1+hoehe2;
  document.getElementById("knopf2ca").style.top = 160+hoehe1+hoehe2+30;
  document.getElementById("knopf2d").style.top = 160+hoehe1+hoehe2+hoehe3;
  document.getElementById("knopf2da").style.top = 160+hoehe1+hoehe2+hoehe3+60;
  document.getElementById("knopf2db").style.top = 160+hoehe1+hoehe2+hoehe3+30;
  document.getElementById("knopf2e").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4;
  document.getElementById("knopf2ea").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+30;
  document.getElementById("knopf3").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5;
  document.getElementById("knopf4").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+30;
  document.getElementById("knopf4a").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+60;
  document.getElementById("knopf4b").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+90;
  document.getElementById("knopf4c").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+120;
  document.getElementById("knopf4d").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+150;
  document.getElementById("knopf4e").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+180;
  document.getElementById("knopf4f").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+210;
  document.getElementById("knopf4g").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+240;
  document.getElementById("knopf5").style.top = 160+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+hoehe6;
}


function menue4() {
  if (document.getElementById("knopf4a").style.visibility == "visible") {
    document.getElementById("knopf4").style.backgroundColor = "#FFFFFF";
    document.getElementById("knopf4a").style.top = "190";
    document.getElementById("knopf4a").style.visibility = "hidden";
    document.getElementById("knopf4b").style.top = "220";
    document.getElementById("knopf4b").style.visibility = "hidden";
    document.getElementById("knopf4c").style.top = "250";
    document.getElementById("knopf4c").style.visibility = "hidden";
    document.getElementById("knopf4d").style.top = "280";
    document.getElementById("knopf4d").style.visibility = "hidden";
    document.getElementById("knopf4e").style.top = "310";
    document.getElementById("knopf4e").style.visibility = "hidden";
    document.getElementById("knopf4f").style.top = "340";
    document.getElementById("knopf4f").style.visibility = "hidden";
    document.getElementById("knopf4g").style.top = "370";
    document.getElementById("knopf4g").style.visibility = "hidden";

  } else {
    document.getElementById("knopf4").style.backgroundColor = "#99CC00";
    document.getElementById("knopf4a").style.visibility = "visible"
    document.getElementById("knopf4b").style.visibility = "visible"
    document.getElementById("knopf4c").style.visibility = "visible"
    document.getElementById("knopf4d").style.visibility = "visible"
    document.getElementById("knopf4e").style.visibility = "visible"
    document.getElementById("knopf4f").style.visibility = "visible"
    document.getElementById("knopf4g").style.visibility = "visible"
  }
  menue5();
}

function menue5() {
  if (document.getElementById("knopf2a").style.visibility == "visible") {
    hoehe=160;
  } else {
    hoehe=10;
  }
  if (document.getElementById("knopf2aa").style.visibility == "visible") {
    hoehe1 = 60;
  } else {
    hoehe1 = 0;
  }
  if (document.getElementById("knopf2ba").style.visibility == "visible") {
    hoehe2 = 90;
  } else {
    hoehe2 = 30;
  }
  if (document.getElementById("knopf2ca").style.visibility == "visible") {
    hoehe3 = 60;
  } else {
    hoehe3 = 30;
  }
  if (document.getElementById("knopf2da").style.visibility == "visible") {
    hoehe4 = 90;
  } else {
    hoehe4 = 30;
  }
  if (document.getElementById("knopf2ea").style.visibility == "visible") {
    hoehe5 = 60;
  } else {
    hoehe5 = 30;
  }
  if (document.getElementById("knopf4a").style.visibility == "visible") {
    hoehe6 = 270;
  } else {
    hoehe6 = 60;
  }

  document.getElementById("knopf2aa").style.top = hoehe;
  document.getElementById("knopf2ab").style.top = hoehe+30;
  document.getElementById("knopf2b").style.top = hoehe+hoehe1;
  document.getElementById("knopf2ba").style.top = hoehe+hoehe1+30;
  document.getElementById("knopf2bb").style.top = hoehe+hoehe1+60;
  document.getElementById("knopf2c").style.top = hoehe+hoehe1+hoehe2;
  document.getElementById("knopf2ca").style.top = hoehe+hoehe1+hoehe2+30;
  document.getElementById("knopf2d").style.top = hoehe+hoehe1+hoehe2+hoehe3;
  document.getElementById("knopf2da").style.top = hoehe+hoehe1+hoehe2+hoehe3+60;
  document.getElementById("knopf2db").style.top = hoehe+hoehe1+hoehe2+hoehe3+30;
  document.getElementById("knopf2e").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4;
  document.getElementById("knopf2ea").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+30;
  document.getElementById("knopf3").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5;
  document.getElementById("knopf4").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+30;
  document.getElementById("knopf4a").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+60;
  document.getElementById("knopf4b").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+90;
  document.getElementById("knopf4c").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+120;
  document.getElementById("knopf4d").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+150;
  document.getElementById("knopf4e").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+180;
  document.getElementById("knopf4f").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+210;
  document.getElementById("knopf4g").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+240;
  document.getElementById("knopf5").style.top = hoehe+hoehe1+hoehe2+hoehe3+hoehe4+hoehe5+hoehe6;
}