Mine

var xmlHttp
function showAccessPoints(str)
{
        xmlHttp = GetXmlHttpObject()
        if (xmlHttp == null)
        {
                alert ("Browser does not support HTTP Request")
                return
        }

        var url = "get_aps.php"
        url = url + "?apkey="+str
        url = url + "&sid="+Math.random()
        xmlHttp.onreadystatechange=apStateChanged
        xmlHttp.open("GET", url, true)
        xmlHttp.send(null)
}

function showSubscribers(apKey)
{
        xmlHttp = GetXmlHttpObject()
        if (xmlHttp == null)
        {
                alert ("Browser does not support HTTP Request")
                return
        }

        var url = "get_sus.php"
        url = url + "?suid=" + apKey
        url = url + "&sid = " + Math.random()
        xmlHttp.onreadystatechange = suStateChanged()
        xmlHttp.open("GET", url, true)
        xmlHttp.send(null)
}

function apStateChanged()
{
        if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
        {
                document.getElementById("apHint").innerHTML = xmlHttp.responseText
        }
}

function suStateChanged()
{
        if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
        {
                document.getElementById("suHint").innerHTML = xmlHttp.responseText
        }
}

function GetXmlHttpObject()
{
        var xmlHttp = null;
        try
        {
                // Firefox, Opera 8.0+, Safari
                xmlHttp = new XMLHttpRequest();
        }
        catch (e)
        {
                //Internet Explorer
                try
                {
                        xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
                }
                catch (e)
                {
                        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
        }
        return xmlHttp;
}