function getE(elm){
    var e = document.getElementById(elm);
    if(e) return e; else return document.createElement("div");
}

function setMenus(main, sub, sys){
    if(main != 0){
        var l = getE("l" + main);
        var m = getE("m" + main);
        var r = getE("r" + main);
        var sm = getE("s-m" + main);
        l.setAttribute("className", "lm-l");
        l.setAttribute("class", "lm-l");
        m.setAttribute("className", "mm-l");
        m.setAttribute("class", "mm-l");
        r.setAttribute("className", "rm-l");
        r.setAttribute("class", "rm-l");
        sm.style.display = "block";
    }
    if(sub != 0){
        var s = getE(("s" + main) + sub);
        s.setAttribute("className", "sm-l");
        s.setAttribute("class", "sm-l");
    }
    if(sys != 0){
        var yl = getE("yl" + sys);
        var ym = getE("ym" + sys);
        var yr = getE("yr" + sys);
        yl.setAttribute("className", "ly-l");
        yl.setAttribute("class", "ly-l");
        ym.setAttribute("className", "my-l");
        ym.setAttribute("class", "my-l");
        yr.setAttribute("className", "ry-l");
        yr.setAttribute("class", "ry-l");
    }
}