function ToggleMenu(id) {
  if (document.getElementById("Menu_" + id).style.display == "none") {
    document.getElementById("Menu_" + id).style.display = "";
    if (document.getElementById("MenuImage_" + id)) {
      document.getElementById("MenuImage_" + id).src = "img/collapse.gif";
      document.getElementById("MenuImage_" + id).alt = "Schließen";
    }
  } else {
    document.getElementById("Menu_" + id).style.display = "none";
    if (document.getElementById("MenuImage_" + id)) {
      document.getElementById("MenuImage_" + id).src = "img/expand.gif";
      document.getElementById("MenuImage_" + id).alt = "Öffnen";
    }
  }
}

function CloseAll(id) {
  var i = 0;
  
  for (i = 0; i < 50; i++) {
    if (document.getElementById('Menu_'+id+'_'+i)) {
      document.getElementById('Menu_'+id+'_'+i).style.display = "none";
    }
    if (document.getElementById("MenuImage_"+id+'_'+i)) {
      document.getElementById("MenuImage_"+id+'_'+i).src = "img/expand.gif";
      document.getElementById("MenuImage_"+id+'_'+i).alt = "Öffnen";
    }
  }
}

function OpenAll(id) {
  var i = 0;
  
  for (i = 0; i < 50; i++) {
    if (document.getElementById('Menu_'+id+'_'+i)) {
      document.getElementById('Menu_'+id+'_'+i).style.display = "";
    }
    if (document.getElementById("MenuImage_"+id+'_'+i)) {
      document.getElementById("MenuImage_"+id+'_'+i).src = "img/collapse.gif";
      document.getElementById("MenuImage_"+id+'_'+i).alt = "Schließen";
    }
  }
}

function ToggleOnly(id, id2) {
  var i = 0;
  
  if (document.getElementById("Menu_" + id).style.display == "none") {
    CloseAll(id2);
    document.getElementById("Menu_" + id).style.display = "";
    if (document.getElementById("MenuImage_" + id)) {
      document.getElementById("MenuImage_" + id).src = "img/collapse.gif";
      document.getElementById("MenuImage_" + id).alt = "Schließen";
    }
  } else {
    CloseAll(id2);
    document.getElementById("Menu_" + id).style.display = "none";
    if (document.getElementById("MenuImage_" + id)) {
      document.getElementById("MenuImage_" + id).src = "img/expand.gif";
      document.getElementById("MenuImage_" + id).alt = "Öffnen";
    }
  }
}