function activateMenu(id)
{
	var oMenuItems = document.getElementById(id).getElementsByTagName("li");

	for(var i=0, iLength=oMenuItems.length;i<iLength;i++)
	{
		for(var j=0; j<oMenuItems[i].childNodes.length; j++)
		{
			if(oMenuItems[i].childNodes[j].nodeName != "UL") continue;
		
			oMenuItems[i].onmouseover = function()
			{
				var cMenu = this.children;
				cMenu[cMenu.length-1].style.display = "block";
			}

			oMenuItems[i].onmouseout = function()
			{
				var cMenu = this.children;
				cMenu[cMenu.length-1].style.display = "none";
			}
		}
	}
}