var xmlhttp3;

function validPoints()
{
xmlhttp3=GetXmlHttpObject();
if (xmlhttp3==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="pm_valid_points.php";
xmlhttp3.onreadystatechange=stateChanged;
xmlhttp3.open("GET",url+ "?nocache=" + Math.random(),true);
xmlhttp3.send(null);
}

function stateChanged()
{
if (xmlhttp3.readyState==4)
{
document.getElementById('n1_valid_points').innerHTML=xmlhttp3.responseText;
}
}

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.XMLHTTP3");
  }
return null;
}