//初始化
var def;

function setdef(index)
{
    def = index;
    
    var mm=document.getElementById("m_"+def);
    mm.className="menu_def";
    
    var ss=document.getElementById("s_"+def);
    ss.className="menu2_def";
    ss.style.display="block";
}

function mover(object){
  //主菜单
  var mm=document.getElementById("m_"+object);
  mm.className="menu_def";
  //初始主菜单先隐藏效果
  if(def!=object){
    var mdef=document.getElementById("m_"+def);
    mdef.className="";
  }
  //子菜单
  var ss=document.getElementById("s_"+object);
  ss.style.display="block";
  //初始子菜单先隐藏效果
  if(def!=object){
    var sdef=document.getElementById("s_"+def);
    sdef.style.display="none";
  }
}

function mout(object){
  //主菜单
  var mm=document.getElementById("m_"+object);
  mm.className="";
  //初始主菜单还原效果
  if(def!=0){
    var mdef=document.getElementById("m_"+def);
    mdef.className="menu_def";
  }
  //子菜单
  var ss=document.getElementById("s_"+object);
  ss.style.display="none";
  //初始子菜单还原效果
  if(def!=0){
    var sdef=document.getElementById("s_"+def);
    sdef.style.display="block";
  }
}