function makeHovers(navRoot)
{
    for (i=0; i < navRoot.childNodes.length; i++){
        node = navRoot.childNodes[i];
        if (node.nodeName == "LI") {
            YAHOO.util.Event.addListener(node, "mouseover", function() { this.className += " over"; });
            YAHOO.util.Event.addListener(node, "mouseout", function() { this.className = this.className.replace(" over", ""); });
        }
    }
}

if (document.all) {
    YAHOO.util.Event.addListener(window, "load", function() { makeHovers(document.getElementById("mm")); });
}