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";
			                }
			            }
			        }
			    }
			}