/*第一种形式       第二种形式       更换显示样式*/   

function       setTab(name,cursel,n){   
    for(i=1;i<=n;i++){   
        var       menu=document.getElementById(name+i);   
        var       con=document.getElementById("con_"+name+"_"+i);   
        menu.className=i==cursel?"hover":"";   
        con.style.display=i==cursel?"block":"none";   
    }   
}
function       setTabs(name,cursel,n){   
    for(i=1;i<=n;i++){   
        var       menus=document.getElementById(name+i);   
        var       cons=document.getElementById("cons_"+name+"_"+i);   
        menus.className=i==cursel?"hover":"";   
        cons.style.display=i==cursel?"block":"none";   
    }   
}

function show_menu(obj_s,obj){
var  s_id = document.getElementById(obj_s);
var  sc_id = document.getElementById(obj);
s_id.style.display = "";
sc_id.className = "ahv";
}
function hide_menu(obj_h,obj){
var  h_id = document.getElementById(obj_h);
var  hc_id = document.getElementById(obj);
h_id.style.display = "none";
hc_id.className = "alk";
}