function zeigMenu(MenuName) {
  document.getElementById(MenuName).style.visibility = "visible";
}

function loeschMenu(MenuName) {
  document.getElementById(MenuName).style.visibility = "hidden";
}

function zeigDetail(DetailName) {
  document.getElementById(DetailName).style.visibility = "visible";
}

function loeschDetail(DetailName) {
  document.getElementById(DetailName).style.visibility = "hidden";
}

function showMark(Num) {
	var topmar = Num * 20;
	var topmar = topmar + "px";
	document.getElementById("menu_mark_line").style.marginTop = topmar;
	document.getElementById("menu_mark_line").style.visibility = "visible";
}

function hideMark(Num) {
	var topmar = Num * 20;
	topmar = topmar + "px";
	document.getElementById("menu_mark_line").style.visibility = "hidden";
	document.getElementById("menu_mark_line").style.marginTop = topmar;
}