var timeout = 500;
var closetimer = 0;
var menuitem = 0;

function showMenu(menu) {
	
	canceltimer();
	
	if (menuitem) {
		menuitem.style.display = 'none';
	}
	
	menuitem = document.getElementById(menu);
	menuitem.style.display = 'block';
	
	/*var elem, vis; 
	
	elem = document.getElementById(menu);
	
	vis = elem.style;
	
	vis.display = 'block';*/
	
}

function hideMenu2() {
	if(menuitem) menuitem.style.display = 'none';
}

function canceltimer() {
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}
	
function hideMenu(menu) {	
	
	closetimer = window.setTimeout(hideMenu2, timeout);
	
	/*var elem, vis; 
	
	elem = document.getElementById(menu);
	
	vis = elem.style;
	
	vis.display = 'none';*/
}