Firefox & AJAX Junk after document element

Im using a page fetch script to dynamically load a web page into a div. Heres the code. BTW Im using Firefox w/ Kubuntu

function fetch(URL, divId) {
        req = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP.3.0");
    req.open("GET", URL);
    req.onreadystatechange = function() {
        if (req.readyState == 4 && req.status == 200) {
            document.getElementById(divId).innerHTML = req.responseText;
        }
    }
    req.send(null);
}

When i try to get it to load a page nothing happens and I get an error

Error: junk after document element
Исходный файл: файл: ///home/amnite/Stuff/MetalBraska/Shows/ContentRight.html
Строка: 2, столбец: 1
Исходный код: