function ValidLogin() {
    if (Trim($$("txtName").value) == "" || !IsMail($$("txtName").value)) {
        alert("用户名请设置为您的Email！");
        $$("txtName").focus();
        return false;
    }
    if (Trim($$("txtPwd").value) == "" || $$("txtPwd").value.length < 6 || !IsVadCode($$("txtPwd").value)) {
        alert("请填写正确密码！");
        $$("txtPwd").focus();
        return false;
    }
    if (Trim($$("txtCode").value) == "" || $$("txtCode").value.length != 5 || !IsVadCode($$("txtCode").value)) {
        alert('请填写正确的验证码！');
        $$("txtCode").focus();
        return false;
    }
    return true;
}

function RenderImg() {
    if ($$("imgVerify")) $$("imgVerify").src = "/Include/CodeImage.aspx?" + Math.random();
}