var statusCheckCount = 0;

function CheckStatus()
{
  var request = createAJAXObject();
  request.open('GET', 'checkStatus.aspx', false);
  request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  request.send(null);
  
  statusCheckCount++;
  //window.status = request.responseText + ' ' + statusCheckCount;
 
  if (request.status == 200)
    if (request.responseText == "OK") return true;
   
  return false;    
}