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