function switchMenu(obj, container, plus) {
	var el = document.getElementById(obj);
	var elCont = document.getElementById(container);
	var elPlus = document.getElementById(plus);
	if ( el.style.display != "none" ) {
		el.style.display = 'none';
		elCont.className='colapseMenuItem';
		elPlus.className='colapseNavPlus';
	}
	else {
		el.style.display = '';
		elCont.className='colapseMenuItemLit';
		elPlus.className='colapseNavMinus';
	}
}