Hvad betyder disse fejl meldinger i et Ajax Script

Hvad betyder disse to fejl, scriptet virker fint. Men kan se den melder fejl i Firefox's javascript konsol.

Fejl: [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIXMLHttpRequest.status]"  nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)"  location: "JS frame :: http://ejendommeisverige.dk/chatv2/chat.php :: handleText :: line 57"  data: no]
Kildefil: http://xxxxxxx.dk/chatv2/chat.php
Linje: 57

Linje 57: if(http2.status == 200) {

Fejl: uncaught exception: [Exception... "Component returned failure code: 0xc1f30001 (NS_ERROR_NOT_INITIALIZED) [nsIXMLHttpRequest.send]"  nsresult: "0xc1f30001 (NS_ERROR_NOT_INITIALIZED)"  location: "JS frame :: http://xxxxxxxx.dk/chatv2/chat.php :: getText :: line 44"  data: no]

linje 44: timeoutId = setTimeout("main()", 1000);   

Hele scriptet:

<script language="JavaScript" type="text/javascript">
    function getXMLHTTPRequest() {
        try {
            req = new XMLHttpRequest();
        }
        catch(err1) {
            try {
                req = new ActiveXObject("Msxml2.XMLHTTP");
            }
            catch (err2) {
                try {
                        req = new ActiveXObject("Microsoft.XMLHTTP");
                    }
                catch (err3) {
                    req = false;
                }
            }
        }
        return req;
    }

    var http = getXMLHTTPRequest();
    var http2 = getXMLHTTPRequest();

    function sendText() {
    if(document.getElementById("tekst").value.length != 0) {
if(timeoutId)clearTimeout(timeoutId);timeoutId=0;
        var modurl = "send.php?text="+document.getElementById("tekst").value+"&rand="+parseInt(Math.random()*999999999999999);
        http2.open("GET", modurl, true);
        http2.onreadystatechange = handleText2;
        http2.send(null);
                document.getElementById("tekst").value = ""
                timeoutId = setTimeout("main()", 1000);   
                }
    }

    function getText() {
        var modurl = "get.php?rand="+parseInt(Math.random()*999999999999999);
        http.open("GET", modurl, true);
        http.onreadystatechange = handleText;
        http.send(null);
    }

    function handleText2() {
        if (http2.readyState == 4) {
            if(http2.status == 200) {
                //alert(http2.responseText);
            }
        }
    }

    function handleText() {
        if (http.readyState == 4) {
            if(http.status == 200) {
                document.getElementById("beskeder").innerHTML = http.responseText+document.getElementById("beskeder").innerHTML;
            }
        }
    }
    var timeoutId = 0;
    function main() {
        getText();
        timeoutId = setTimeout("main()", 2000);   
    }
</script>