var ID_CONF = "";
    function stopTimer()    {clearTimeout(ID_CONF);}
    function Timer_conf()
    {
        clearTimeout(ID_CONF);
        ID = window.setTimeout('load_conf("/client/conferenceAjax.php")',3000);
    }
    function load_conf(url)
    {   
        var d = new Date();
        if(url.indexOf('?')>0)
            url += '&time=' + d.getTime();
        else
            url += '?time=' + d.getTime();
        if (window.XMLHttpRequest) 
        {
                req = new XMLHttpRequest();
                req.onreadystatechange = process_conf;
                req.open("GET", url, true);
                req.send(null);
        }
        else if (window.ActiveXObject) 
        {
            req = new ActiveXObject("Microsoft.XMLHTTP");
            if (req)
            {
                 req.onreadystatechange = process_conf;
                 req.open("GET", url, true);
                 req.send();
            }
        }
        Timer_conf();
    }
    function process_conf()
    {
        if (req.readyState==4)
        {
            //alert(req.responseText);
            document.getElementById("conf").innerHTML = req.responseText;
        }
    }