var oc = '';
function showMenu(s){
	oc = document.getElementById(s + '-link').className;
	document.getElementById(s + '-menu').style.display = 'block';
	document.getElementById(s + '-link').className = 'active';
}
function hideMenu(s){
	document.getElementById(s + '-menu').style.display = 'none';
	document.getElementById(s + '-link').className = oc;
}