New to jQuery (need help !)

[apanimesh061]

function getAjax() {
    var XmlHttp;

    //Creating object of XMLHTTP in IE
    try {
        XmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e) {
        try {
            XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (oc) {
            XmlHttp = null;
        }
    }
    //Creating object of XMLHTTP in Browers other than IE
    if (!XmlHttp && typeof XMLHttpRequest != "undefined") {
        XmlHttp = new XMLHttpRequest();
    }
    return XmlHttp;
}

// Get browser type
function sniffBrowserType() {
    //isFirefox = (navigator.appName == "Netscape");
    isFirefox = (navigator.appName == "Mozilla Firefox");
    isIE = (navigator.appName == "Microsoft Internet Explorer");
    isGC = (navigator.appName == "Google Chrome")
}


// Capture the enter key on the input box and post message
function captureReturn(event) {
    if (event.which || event.keyCode) {
        if ((event.which == 13) || (event.keyCode == 13)) {
            postText();
            return false;
        }
        else {
            return true;
        }
    }
}

// Start the update timer
function setTimers() {
    timeID = window.setTimeout("updateAll()", refreshRate);
}

// Start to update and reset the update timer
function updateAll() {
    window.clearTimeout(timeID);
    getUserList();
    setTimers();
}

function getUserList() {
    rnd++;
    url = 'Server.aspx?action=UserList&session=' + rnd;
    req = getAjax();

    req.onreadystatechange = function() {

        if (req.readyState == 4 && req.status == 200) {

            obj = getElement("userlist");
            obj.innerHTML = req.responseText;
            getBufferText();
        }

    }

    req.open('GET', url, true);
    req.send(null);
}

function getBufferText() {
    rnd++;
    url = 'Server.aspx?action=GetMsg&session=' + rnd;
    req = getAjax();

    req.onreadystatechange = function() {

        if (req.readyState == 4 && req.status == 200) {

            obj = getElement("chatbuffer");
            obj.innerHTML = req.responseText;
            scrollChatPane();
            FocusWindow();
        }
    }

    req.open('GET', url, true);
    req.send(null);
}

function postText() {
    rnd++;
    chatbox = getElement("mytext");
    chat = chatbox.value;
    chatbox.value = "";

    userid = location.search.substring(1, location.search.length);
    url = 'Server.aspx?action=PostMsg&u=' + userid + '&t=' + encodeURIComponent(chat) + '&session=' + rnd;

    req = getAjax();

    req.onreadystatechange = function() {

        if (req.readyState == 4 && req.status == 200) {
            updateAll();
        }

    }

    req.open('GET', url, true);
    req.send(null);
}

function getElement(id) {
    if (isIE) {
        return document.all[id];
    }
    else {
        return document.getElementById(id);
    }
}

function showLoadScreen() {
    var loading = "<div style=\"text-align:center;color:red;\"><h5>Loading...</h5></div>";

    chat = getElement("chatbuffer");
    chat.innerHTML = loading;

    user = getElement("userlist");
    user.innerHTML = loading;
}

function scrollChatPane() {
    var obj = document.getElementById("chatpane");
    obj.scrollTop = obj.scrollHeight;
}

function setFocus(ControlName) {
    var control = document.getElementById(ControlName);
    if (control != null) {
        control.focus();
    }
}

function FocusWindow() {
    window.focus();
}

I know a little bit of Ajax through JavaScript !
I want to know how to use those functions with jQuery ??
I searched the net for help , could get a little but that wasn't good enough to make me implement it myself !

Please Help !
Thanx

I searched the net for help , could get a little but that wasn't good enough to make me implement it myself !

Have a look at the jQuery site, it's full of sample code.