function menu(menuId, action, active){
	if (active == 'inact'){
		if (action == 'over') document.getElementById(menuId).className='menu_h';
		if (action == 'out') document.getElementById(menuId).className='menu';
	};
};

function submenu(titleId,groupId,arrowId){
	if (document.getElementById(groupId).style.display == 'none'){
		document.getElementById(groupId).style.display = 'block';
		document.getElementById(titleId).className = 'title_open';
		document.getElementById(arrowId).src = '/pictures/arrow_u.gif';
	}else{
		document.getElementById(groupId).style.display = 'none';
		document.getElementById(titleId).className = 'title_closed';
		document.getElementById(arrowId).src = '/pictures/arrow_d.gif';
	}
};