activateMenu = function(nav)
{
	if (document.all && document.getElementById(nav).currentStyle) 	/* currentStyle restricts the Javascript to IE only */
	{  
	var navroot = document.getElementById(nav);
		var lis=navroot.getElementsByTagName("LI"); /* Get all the list items within the menu */
		for (i=0; i<lis.length; i++)
		{
			if(lis[i].lastChild.tagName=="UL") /* If the LI has another menu level */
			{
				lis[i].onmouseover=function() /* assign the function to the LI */
				{		
					this.lastChild.style.display="block"; /* display the inner menu */
				}
				lis[i].onmouseout=function()
				{                       
					this.lastChild.style.display="none";
				}
			}
		}
	}
}