// JScript 文件

        function displaySubMenu(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "block";
        }
        function hideSubMenu(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "none";
        }
        function a(ul)
        {
            var t=ul.getElementsByTagName("ul");
            while (t.parentNode){
                t=t.parentNode;
                if (t.nodeName=="li"){
                   
                    break;
                }
            }
        }