var close = 0;

function showMenu(id){
	var menu = document.getElementById('submenu'+id);
	menu.style.visibility = 'visible';
	menu.onmouseout=function() {
		hideMenu(id);
	}
	var item = document.getElementById('item'+id);
	item.onmouseout=function() {
		hideMenu(id);
	}
}

function hideMenu(id){
	var menu = document.getElementById('submenu'+id);
	menu.style.visibility = 'hidden';
}