var object3 = false;

if (window.XMLHttpRequest) object3 = new XMLHttpRequest();
else if (window.ActiveXObject) object3 = new ActiveXObject("Microsoft.XMLHTTP");
  
function getDataMC(dataSource, divID)
{
    if (object3.readyState==4 || object3.readyState==0) 
    {
        var obj = document.getElementById(divID);
        object3.open("GET", dataSource);
        object3.onreadystatechange = function()
        {
            if (object3.readyState == 4 && object3.status == 200) 
            obj.innerHTML= object3.responseText;
        }
         object3.send(null); 
      }
}

function odswiezaj_my()
{
      getDataMC('chat/pobierz_chatmy.php','mojchat');
      setTimeout("odswiezaj_my()", 5000);
}