var object = false;

if (window.XMLHttpRequest) object = new XMLHttpRequest();
else if (window.ActiveXObject) object = new ActiveXObject("Microsoft.XMLHTTP");
  
function getData(dataSource, divID)
{
    if (object.readyState==4 || object.readyState==0) 
    {
        var obj = document.getElementById(divID);
        object.open("GET", dataSource);
        object.onreadystatechange = function()
        {
            if (object.readyState == 4 && object.status == 200) 
            obj.innerHTML= object.responseText;
        }
         object.send(null); 
      }
}

function odswiezaj_m()
{
      getData('chat/pobierz_chatm.php','mojDIVIK');
      setTimeout("odswiezaj_m()", 5000);
}