function login() {
    var userName = document.getElementById("username");
    var pwd = document.getElementById("pwd");
    if (userName.value.length < 4 || userName.value.length > 10) {
        alert("用户名长度必须在4-10之间，请重新输入");
        return;
    }
    var strRegex = "^web[0-9]+";
    var re = new RegExp(strRegex);
    if (!re.test(userName.value)) {
        alert("用户名必须是web+数字形式，请重新输入");
        return;
    }
    LoginService.LoginCP(userName.value, pwd.value, onLoginCPSuccess);
    var loading = document.getElementById("loading");
    loading.style.display = "block";
}

function enter() {
    if (event.keyCode == 13) {
        login();
    }
}

function onLoginCPSuccess(result) {
    if (result == "成功") {
        window.location = "/index.aspx";
    }
    else {
        var loading = document.getElementById("loading");
        loading.style.display = "none";
        alert(result);
    }
}

function reset() {
    var userName = document.getElementById("username");
    var pwd = document.getElementById("pwd");
    userName.value = "";
    pwd.value = "";
}

function userCheck() {
    var num = "0123456789";
    var val = new String();
    var idnum = "";
    val = document.getElementById("username").value;
    for (var i = 0; i < val.length; i++) {
        if (num.indexOf(val.charAt(i)) != -1)
            idnum += val.charAt(i);
    }
    document.getElementById("username").value = "web" + idnum;

}