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";
                				}
            				}
        			}
    			}
		}