$(document).ready(function() {
    $("#imageSubmit").bind("click", function() { CheckLogin(); return false; });
});
function CheckLogin() {
    var uname = $("#txtUserName").val();
    var pwd = $("#txtPwd").val();
    if (uname == "") {
        alert("用户名不能为空!");
        $("#txtUserName").focus();
        return false;
    }
    if (pwd == "") {
        alert("密码不能为空!");
        $("#txtPwd").focus();
        return false;
    }
    $.ajax
    ({
        type: "POST",
        url: "/CheckLogin.aspx",
        data: { txtUserName: uname, txtPwd: pwd }, //传递数据
        success: function(msg) {
            if (msg.length > 10) {
                window.location = msg;
            }
            else {
                alert(msg);
            }
        },
        error: function(data) {
            alert("服务器忙，请稍候再试！");
        }
    });

}