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";

				}

			}

		}

	}

}