function post_sender(action_page, parameters) {
	var http_request = false;
		
	if(window.XMLHttpRequest) {
		http_request = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		try {
			http_request = new ActiveXObject('Msxml2.XMLHTTP');
		} catch(e) {
			http_request = new ActiveXObject('Microsoft.XMLHTTP');
		}
	}
	
	http_request.onreadystatechange = alertContents;
    http_request.open('POST', action_page, true);
    http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http_request.setRequestHeader("Content-length", parameters.length);
    http_request.setRequestHeader("Connection", "close");
    http_request.send(parameters);
    
    document.getElementById('message_field2').innerHTML = parameters;
	
	
	 function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;           
         } else {
            alert('There was a problem with the request.');
         }
     }
  }
}
   
function message_send() {
      var poststr = document.getElementById("message").value;
      document.getElementById('message_field3').innerHTML = poststr;
      post_sender('chat_input_messages.php', poststr);
}