function getXMLHTTPRequest() {
try {
        req=new XMLHttpRequest(); /* np. Firefox */
}       catch(err1) {
        try     {
                req=new ActiveXObject("Msxm12.XMLHTTP"); /* niektóre wersje IE */
        }       catch(err2) {
                try {
                        req=new ActiveXObject("Microsoft.XMLHTTP"); /* niektóre wersje IE */
                }       catch(err3) {
                        req=false;
                }
        }
}
return req;
}
/* WCZYTYWANIE PODSTRON */
var http=getXMLHTTPRequest();
function callAHAH(url, pageElement, callMessage) {
        document.getElementById(pageElement).innerHTML = callMessage;
        myRand=parseInt(Math.random()*9999999999);
        var myurl=url + "?rand=" + myRand;  
        http.open("GET",myurl,true);
        http.onreadystatechange = function() {responseAHAH(pageElement);};
        http.send(null);
}
function responseAHAH(pageElement) {
        if(http.readyState == 4) {
                if(http.status == 200) {
                        var output = http.responseText;
document.getElementById(pageElement).innerHTML = output;
                }
        }
}