var xmlhttp;
var userid;
var mid;
var whichumpire;
var displayresult;
var display;

function selectumpire(userid, mid, which, display)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
  
  whichumpire = which;
  displayresult = display;
  var url="selectumpire.php";
  url=url+"?uid="+userid;
  url=url+"&mid="+mid;
  url=url+"&which="+which;
  url=url+"&sid="+Math.random();
  xmlhttp.onreadystatechange=umpireChanged;
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);

}

function umpireChanged()
{
  if (xmlhttp.readyState==4)
  {
    if (displayresult == 'Y')
    {
      if (whichumpire == '1')
      {
        document.getElementById("umpire1result").innerHTML=xmlhttp.responseText;
      }
      else
      {
        document.getElementById("umpire2result").innerHTML=xmlhttp.responseText;
      }
    }
    else
    {
      if (whichumpire == '1')
      {
        document.getElementById("umpireresult").innerHTML='Umpire 1 amended';
      }
      else
      {
        document.getElementById("umpireresult").innerHTML='Umpire 2 amended';
      }
    }   
  }
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}