function setNav(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?"current":"";
if(cursel!=2){
	document.getElementById(name+2).className="red";
}
con.style.display=i==cursel?"block":"none";
}
}

function setNav2(name,cursel,n){
for(i=1;i<=n;i++){
var menu=document.getElementById(name+i);
var con=document.getElementById("con_"+name+"_"+i);
var jia=document.getElementById(name+"_"+i);

menu.className=i==cursel?"current":"";
document.getElementById(name+"_"+i).innerHTML=i==cursel?"-":"+";

con.style.display=i==cursel?"block":"none";
}
}



function setNav3(name,cursel,n){
for(i=1;i<=n;i++){
var menu=document.getElementById(name+i);
var con=document.getElementById("con_"+name+"_"+i);
var cona=document.getElementById("con_"+name+"img_"+i);
menu.className=i==cursel?"current":"";
if(cursel!=2){
	document.getElementById(name+2).className="red";
}
con.style.display=i==cursel?"block":"none";
cona.style.display=i==cursel?"block":"none";

}
}