function activeMenu(id) {
	var elements = document.getElementById('navi').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';
		}
	}
}