function resetImage() {
    var obj = document.getElementById("code_img");
    document.getElementById("code_img").src = "Handler/GetCaptchaImage.ashx?" + Math.random() * 100;
    console.log("resetImage");
}

function clearMsg() {
    var obj = document.getElementById("lblMsg");
    if (obj != undefined && obj != null) {
        obj.innerHTML = "";
    }
}
setTimeout("clearMsg()", 10000);

$(function () {

    $(document).keydown(function (event) {
        if (event.keyCode == 13) {
            $("#btn").click();
        }
    });

    $('.loginbox').css({ 'position': 'absolute', 'left': ($(window).width() - 692) / 2 });
    $(window).resize(function () {
        $('.loginbox').css({ 'position': 'absolute', 'left': ($(window).width() - 692) / 2 });
    });

    var ct = $("#hCT").val();
    if (ct != "" && parseInt(ct) >= 3) {
        $("#sp_code").show();
        resetImage();
    }


});

function loginFn() {
    var user = $("#txtUser").val();
    var pwd = $("#txtPwd").val();
    if (user == "") {
        showMsg("请输入账号！");
        $("#txtUser").focus();
        return;
    }
    if (pwd == "") {
        showMsg("请输入密码！");
        $("#txtPwd").focus();
        return;
    }

    var code = $("#txtCode").val();
    var ct = $("#hCT").val();
    if (ct != "" && parseInt(ct) >= 3 && code == "") {
        showMsg("请输入验证码");
        $("#txtCode").focus();
        return;
    }

    $("#btn").attr("disabled", "disabled");
    postAjax("Handler/login.ashx?", "erp_user_login", "user=" + user + "&pwd=" + pwd + "&code=" + code, function (data) {
        showMsg("<span style=\"color:#0000FF\">登录成功</span>");
        window.location.href = 'index.aspx';
    }, function (data) {
            $("#btn").removeAttr("disabled");

        if (data.indexOf("验证码") != -1) {
            $("#txtCode").val("");
            $("#txtCode").focus();
            showMsg(data);
            resetImage();
        }
        else if (data.indexOf("|") != -1) {
            var dArr = data.split('|');
            showMsg(dArr[1]);
            var c = dArr[0];
            $("#hCT").val(c);
            if (parseInt(c) >= 3) {
                $("#sp_code").show();
                $("#txtCode").val("");
                resetImage();
            }
        } else {
            showMsg(data);
        }
    });
}

function postAjax(urlStr, type, queryString, sFn, eFn, hps) {
    if (hps != false) progressShow();
    $.ajax({
        url: urlStr + "t=" + type,
        type: "POST",
        data: queryString,
        datatype: "json",
        success: function (result) {
            if (result == "") {
                alert("操作发生错误!");
                progressHide();
                return;
            }
            var data = $.parseJSON(result);
            if (data.type == "success") {
                progressHide();
                sFn(data.result);
            } else {
                progressHide();
                if (eFn != undefined) eFn(data.result);
                else alert(data.result);
            }
        },
        error: function (data) {
            progressHide();
            alert("操作发生错误！");
        }
    });
}

function progressHide() {
    $(".login_msg").empty();
}

function progressShow() {
    $(".login_msg").html("登录中...");
}

function showMsg(msg) {
    $(".login_msg").html(msg);
}