function ShowMenu(obj, n){
                var dd = obj.parentNode.getElementsByTagName("dd");
                for (var i = 0; i < dd.length; i++) {
                    dd[i].className = "";
                }
                dd[n].className = "ok";
                var ol = document.getElementById("menu").getElementsByTagName("ol");
                for (var i = 0; i < ol.length; i++) {
                    ol[i].className = "no";
                }
                ol[n].className = "";
            }
            
            function ShowSpan(obj, n){
                var span = obj.parentNode.getElementsByTagName("span");
                for (var i = 0; i < span.length; i++) {
                    span[i].className = "no";
                }
                span[n].className = "";
                var li = obj.parentNode.getElementsByTagName("li")
                li[n].className = "ok";
                for (var i = 0; i < li.length; i++) {
                    if (i != n) {
                        li[i].className = "";
                    }
                    li[i].onmouseout = function(){
                        this.className = "ol";
                    }
                }
            }
            
            function ShowUl(obj, n){
                var ul = obj.parentNode.getElementsByTagName("ul");
                var h1 = obj.parentNode.getElementsByTagName("h1");
                for (var i = 0; i < h1.length; i++) {
                    h1[i].innerHTML = h1[i].innerHTML.replace("-", "+");
                    h1[i].className = "";
                }
                if (ul[n].className == "no") {
                    ul[n].className = "";
                    obj.className = "ok";
                    obj.innerHTML = obj.innerHTML.replace("+", "-");
                }
                else {
                    ul[n].className = "no";
                    return;
                }
                for (var i = 0; i < ul.length; i++) {
                    if (i != n) {
                        ul[i].className = "no";
                    }
                }
            }