x = document.getElementsByTagName('ol');
for (i=0; i < x.length; i++) {
				if(x[i].className == "subItem"){
					x[i].style.display = "none";
					}
			}



function showNav(who){
	
if (document.getElementById(who).style.display == "block"){
document.getElementById(who).style.display = "none";
}else{


x = document.getElementsByTagName('ol');
	
			for (i=0; i < x.length; i++) {
				if(x[i].className == "subItem"){
					x[i].style.display = "none";
					}
			}

	document.getElementById(who).style.display = "block";
}

}