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";
}
}
}
}
}

if (isJsEnabled()) {
    addLoadEvent(activateMenu);
}