var http_request = false;

function sendReview(id, val)
{
    http_request = false;
    if (window.XMLHttpRequest) { // Mozilla, Safari, ...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType)
            http_request.overrideMimeType('text/xml');
    } else if (window.ActiveXObject) { // IE
        try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!http_request) {
        alert('Error submitting review');
        return false;
    }
    http_request.onreadystatechange = function() {
        if (http_request.readyState == 4 && http_request.status == 200) {
            ret = http_request.responseXML;
            root = ret.documentElement;
            id = root.getElementsByTagName('id')[0].firstChild.data;
            up = root.getElementsByTagName('up')[0].firstChild.data;
            down = root.getElementsByTagName('down')[0].firstChild.data;
            div = document.getElementById('thumb' + id);
            div.innerHTML = '<div class="thumbs_up" ' + (val == 'U' ? 'style="color: Green;"' : '') + '><img src="/images/thumbs_up.gif" align="middle" border="0"/> ' + up + ' </div> | <div class="thumbs_down" ' + (val == 'D' ? 'style="color: Green;"' : '') + '><img src="/images/thumbs_down.gif" align="middle" border="0"/> ' + down + '</div>';
        }
    }
    http_request.open('GET', 'http://www.gamermill.com/thumb.php?id=' + id + '&val=' + val, true);
    http_request.send(null);
}