var counter = 0;
if(window.XMLHttpRequest){
    xmlhttp=new XMLHttpRequest();
}
else{
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","uploads/twitterfeed.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;

function urlify(text) {
    var urlRegex = /(https?:\/\/[^\s]+)/g;
    return text.replace(urlRegex, function(url) {
        return '<a href="' + url + '" target="_new">' + url + '</a>';
    })
}

function showtweet(){
    if(counter == 10){
        counter = 0;
    }
    var text = xmlDoc.getElementsByTagName("text")[counter].childNodes[0].nodeValue;
    document.getElementById("tweets").innerHTML=urlify(text);
    counter++;
    setTimeout("showtweet()", 5000);
}