var req = null;
var reqTimeout;
var last_id = 0;
var sended_message = "";
var result_object;

function InitReg(){
    reg = null;
    if (window.XMLHttpRequest) {
        try {
            req = new XMLHttpRequest();
        } catch (e){}
    } else if (window.ActiveXObject) {
        try {
            req = new ActiveXObject('Msxml2.XMLHTTP');
        } catch (e){
            try {
                req = new ActiveXObject('Microsoft.XMLHTTP');
            } catch (e){}
        }
    }
}

function loadXMLDoc(url, pr) {
    InitReg();
    if (req) {
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.setRequestHeader('Content-Type', 'text/html;charset=windows-1251');
        req.send(null);
	  reqTimeout = setTimeout("RegAbort();", 5000);
    }
}
 
function RegAbort() {
   if(req.readyState != 4){
       req.abort();
 	 //document.getElementById(result_object).innerHTML = "Upload error!";
   }
}

function processReqChange() { 
    if (req.readyState == 4) {
        if (req.status == 200) {
		document.getElementById(result_object).innerHTML = req.responseText;
        }
    }
}
 
function stat(n) {
  switch (n) {
    case 0:
      return "Не инициализирован";
    break;
     case 1: 
      return "Отправка и получение...";
    break;
 
    case 2: 
      return "Загружено";
    break;
 
    case 3: 
      return "В процессе...";
    break;
 
    case 4: 
      return "Готово";
    break;
 
    default:
      return "неизвестное состояние";  
  }  
}
 

function UploadAJAX(url, element){
   result_object = element;
   loadXMLDoc(url, 0);
}