//设定栏目的鼠标事件
function doClick_linyu_nav(o){ o.className="navmenu_on"; var j; var id; var e; for(var i=1;i<=7;i++){   id ="linyu_nav"+i;   

j = document.getElementById(id);   e = document.getElementById("sub_con"+i);   if(id != o.id){     

j.className="navmenu_off";     e.style.display = "none";   }else{  
  e.style.display = "block"; 
    }
  }
  }
  //设定栏目的默认选项
function doView_linyu_nav(o,intI,intJ){ o.className="navmenu_on"; var j; var id; var e; var f; for(var i=1;i<=7;i++){   id 

="linyu_nav"+i;   j = document.getElementById(id);   e = document.getElementById("sub_con"+i);   
    if(id != "linyu_nav"+intI){   //设置一级的样式
      j.className="navmenu_off";  //设置二级的不显示
      e.style.display = "none";   }else{   
     j.className="navmenu_on"; e.style.display = "block"; if(intJ!=0){ f = document.getElementById

("sub_con"+i+"_"+intJ); 
  //设置二级的样式
  f.className="submenu_on"; 
  }
    }
  }
  }