myvoteflag=0;
function myfill(a){
  var voto,c1,c2,par,req;
  if(myvoteflag==1)return;
  if(a<0){
    voto=-a;
    req=new XMLHttpRequest();
    par="nn="+nn+"&voto="+voto;
    req.open('POST',"myvote.php",true);
    req.setRequestHeader("Content-type","application/x-www-form-urlencoded; charset=UTF-8");
    req.setRequestHeader("Content-length",par.length);
    req.setRequestHeader("Connection","close");
    req.send(par);
    myvoteflag=1;
    a=voto;
  }
  if(a==0){
    a=q;
    c1='red';
    c2='blue';
  }
  else {
    c1='yellow';
    c2='gray';
  }  
  for(i=1;i<=a;i++)document.getElementById("o"+i).style.color=c1;
  for(i=a+1;i<=10;i++)document.getElementById("o"+i).style.color=c2;
}