function ativar_menu() 
	{
	var navItems = document.getElementById("barra").getElementsByTagName("li");
	for (var i=0; i< navItems.length; i++) 
		{
		if((navItems[i].className == "menuvertical") || (navItems[i].className == "submenu"))
			{
			if(navItems[i].getElementsByTagName('ul')[0] != null)
				{
				navItems[i].onmouseover=function() {this.getElementsByTagName('ul')[0].style.display="block";this.style.backgroundColor = "#f9f9f9";}
				navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";this.style.background = "NONE";}
				}
			}
		}
	}
window.onload=ativar_menu;