function activeMenu(id) {
	var elements = document.getElementById('navi_left').getElementsByTagName('li');
	var a;
	for (var i = 0; i < elements.length; i++) {
		a = elements[i].getElementsByTagName('a')[0];
		if (a.href == document.location.href) {
			elements[i].className = elements[i].className + ' active';
			a.className = a.className + ' active';
		}
	}
}

function activeMenuZwei(id) {
	var elements = document.getElementById('navi_left_unten').getElementsByTagName('li');
	var a;
	for (var i = 0; i < elements.length; i++) {
		a = elements[i].getElementsByTagName('a')[0];
		if (a.href == document.location.href) {
			elements[i].className = elements[i].className + ' active';
			a.className = a.className + ' active';
		}
	}
}

function activeMenuDrei(id) {
	var elements = document.getElementById('navi_right').getElementsByTagName('li');
	var a;
	for (var i = 0; i < elements.length; i++) {
		a = elements[i].getElementsByTagName('a')[0];
		if (a.href == document.location.href) {
			elements[i].className = elements[i].className + ' active';
			a.className = a.className + ' active';
		}
	}
}

function activeMenuVier(id) {
	var elements = document.getElementById('navi_right_unten').getElementsByTagName('li');
	var a;
	for (var i = 0; i < elements.length; i++) {
		a = elements[i].getElementsByTagName('a')[0];
		if (a.href == document.location.href) {
			elements[i].className = elements[i].className + ' active';
			a.className = a.className + ' active';
		}
	}
}