function aa(s_id){
for(i=1;i<3;i++){
if(i==s_id){
document.getElementById("m"+i).className="c_"+1+" white";
document.getElementById("t"+i).className="s_"+1+" white";
}
else {
document.getElementById("m"+i).className="c_0";
document.getElementById("t"+i).className="s_"+0+" white";
}
}
}