var httpReq;

function createRequestObject ()
{
	var refHttp;

	if (window.XMLHttpRequest)
	{
		refHttp = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
  {
		refHttp = new ActiveXObject("Microsoft.XMLHTTP");
  }
	return refHttp;
}

function checkReadyState(refReq)
{
	if (refReq.readyState == 4)
  {
	  if (refReq.status == 200)
    {
    	return true;
    }
  }
}