var xmlHttp;
var timeout;

function getLastTweet() {
    var url = "/TwitterFeed.aspx?" + Math.random();
    xmlHttp = GetXmlHttpObject();
    if (xmlHttp == null) { return; }
    timeout = setTimeout('xmlHttp.abort()', 5000);
    xmlHttp.onreadystatechange = stateChanged;
    xmlHttp.open("GET", url, true);
    xmlHttp.send(null);
}
function stateChanged() {
    if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
        clearTimeout(timeout);
        res = xmlHttp.responseText;
        if (!res) { return; }
        try {
            document.getElementById('twitter-box').innerHTML = res;
        } catch (e) { }
    }
}
function GetXmlHttpObject() {
    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;
}

getLastTweet();