function checkPartner() {
  if(req.readyState == 4 || req.readyState == 0) {
    req.open("GET", "/cgi/partner.php", true);
    req.setRequestHeader("Content-Type","text/plain");
    req.onreadystatechange = setPartnerMsg;
    req.send(null);
  } else {
    alert("err");
  }
}

/*
function updatePartner(id, hits) {
  if(req.readyState == 4 || req.readyState == 0) {
    req.open("GET", "/hosting/cgi/partner.php?id=" + id + "&hits=" + hits, true);
    req.setRequestHeader("Content-Type","text/plain");
    req.onreadystatechange = setPartnerMsg;
    req.send(null);
  }
}
*/

function setPartnerMsg() {
  if(req.readyState == 4) {
    document.getElementById("partners").innerHTML = req.responseText;
  }
}