function replace(file, element) {
    var http = false;
    try {
        // Opera 8.0+, Firefox, Safari
        http = new XMLHttpRequest();
    } catch (e) {
        // Internet Explorer Browsers
        try {
            http = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                http = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {
                // Something went wrong
                alert("Your browser broke!");
                return false;
            }
        }
    }
    http.open("GET", file, true);
    http.onreadystatechange = function () {
        if (http.readyState == 4 && http.status == 200) {
            document.getElementById(element).innerHTML = http.responseText;
        }
    }
    http.send(null);
}