function activateMenu(menu)
{
	if(document.getElementById)
	{
		var aItems = menu.parentNode.getElementsByTagName("a");
		for (var i=0; i<aItems.length; i++)
			if(aItems[i].className != "header")
				aItems[i].style.display = aItems[i].style.display == "block" || aItems[i].style.display == "" ? "none" : "block";
	}
}