function LoginValidator() {
    if (RemoverSpace(document.getElementById("txtName").value).length == 0) {
        alert("请输入用户名！");
        document.getElementById("txtName").focus();
        return false;
    }
    if (document.getElementById("txtPwd").value.length==0 ) {
        alert("请输入密码！");
        document.getElementById("txtPwd").focus();
        return false;
    }
    var rbltable = document.getElementById("radUserType");
             var rbs = rbltable.getElementsByTagName("INPUT");
             var result = false;
             for (var i = 0; i < rbs.length; i++) {
                 if (rbs[i].checked) {
                     result = true;
                     break;
                 }
             }
             if (result == false) {
                 alert('请选择会员类型!');
                 return false;
             }
}

//验证空格
function RemoverSpace(txt) {
    return txt.replace(/^\s+|\s+$/g, '');
}

function isDigit(s) {
    var patrn = /^\w{5,20}|[\u0391-\uFFE5]{1,10}$/;
    if (!patrn.exec(s)) return false
    return true
}