var req;
function createXMLHttpRequest() {
    if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
    }
}
function judgeuserpower(tempurl) {

    createXMLHttpRequest();
    var url = tempurl ;
    req.onreadystatechange = processResponse;
    req.open("POST", url, false);
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    req.send(null);

}
function processResponse() {
    if (req.readyState == 4) { // 判断对象状态
        if (req.status == 200) { // 信息已经成功返回，开始处理信息
            getRvcminInfo();
        } else { //页面不正常
            window.alert("您所请求的页面数据异步通讯有异常!请联系管理员");
        }
    }
}
function getRvcminInfo() {
    var result = req.responseText;
    var userpower = document.getElementById("userpower");
    if (result == 0) {
        userpower.value = "0";
        return true;

    }
    else(result == 1)
    {
        userpower.value = "1";
        return true;

    }

}