Load WebPage Data into a element: code sample

The amount of time i see people asking for it i thought i post a code sample :-)

function loadFragmentInToElement(fragment_url, element_id) {
    var element = document.getElementById(element_id);
    element.innerHTML = '<p><em>Loading ...</em></p>';
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.open("GET", fragment_url);
    xmlhttp.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");
    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            element.innerHTML = xmlhttp.responseText;
        }
    }
    xmlhttp.send(null);
}