function CheckForm() {
    if (document.aspnetForm.Name.value.length == 0) {
        alert("请输入您的姓名!");
        document.aspnetForm.Name.focus();
        return false;
    }
    if (document.aspnetForm.address.value.length == 0) {
        alert("请输入您的联系地址!");
        document.aspnetForm.address.focus();
        return false;
    }
    if (document.aspnetForm.country.value.length == 0) {
        alert("请输入您的国家!");
        document.aspnetForm.country.focus();
        return false;
    }
    if (document.aspnetForm.postalCode.value.length == 0) {
        alert("请输入您的邮编!");
        document.aspnetForm.postalCode.focus();
        return false;
    }
    if (document.aspnetForm.telephone.value.length == 0) {
        alert("请输入您的电话!");
        document.aspnetForm.telephone.focus();
        return false;
    }
    if (document.aspnetForm.Email.value.length == 0) {
        alert("请输入您的电子邮箱!");
        document.aspnetForm.Email.focus();
        return false;
    }
    if (document.aspnetForm.sum.value.length == 0) {
        alert("请输入您的每天检测血糖次数!");
        document.aspnetForm.sum.focus();
        return false;
    }
    if (document.aspnetForm.identifier.value.length == 0) {
        alert("请输入您的机身号码!");
        document.aspnetForm.identifier.focus();
        return false;
    }
}