var req;

function loadurl(url) {
    req = window.XMLHttpRequest ?
            new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");
 
    req.onreadystatechange = triggered;
    req.open("GET", url);
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
    req.send(null);
}

function triggered() {
    if ((req.readyState == 4) && (req.status == 200)) {
        document.getElementById("output").innerHTML = req.responseText;
    }
}