function doPost(){
  var url = "shout.php?do=write+'&'+action=" + document.getElementById('shoutmsg').value;
  url += "&name=" + document.getElementById('name').value;
 
  http.open("GET", url, true);
  http.onreadystatechange = handleHttpResponse;
 
  http.send(null);
}
 
function handleHttpResponse(){
  if(http.readyState == 4){
    document.getElementById('shout').innerHTML = http.responseText;
  }
  else {
	document.getElementById('shout_post').innerHTML = "wait...";
  }
}