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";
 				}
 			}
 		}
 	}
 }