function zxly() {
    var l_name = document.getElementById("Txt_name").value;
    var l_address = document.getElementById("txt_add").value;
    var l_phone = document.getElementById("txt_phone").value;
    var l_Email = document.getElementById("txt_emil").value;
    var l_wt = document.getElementById("txt_phone").value;
    if (l_Email == "") {
        alert("E-mail不能为空");
        return false;
    }
    else if (l_name == "") {
        alert("姓名不能为空");
        return false;
    }
    else if (l_address == "") {
        alert("地址不能为空");
        return false;
    }
    else if (l_phone == "") {
        alert("手机号码不能为空");
        return false;
    }
    else if (l_wt == "") {
        alert("问题不能为空");
        return false;
    }
    else {
        if (l_phone != "") {
            var rex = /(\d{11})$/; //验证手机号码;
            if (rex.test(l_phone)) {
                return true;
            }
            else {
                alert("手机号码格式错误");
                return false;
            }
        }
        if (l_Email != "") {
            //验证邮箱
            var myreg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
            if (myreg.test(l_Email)) {
                return true;
            }
            else {
                alert("邮箱格式错误");
                return false;
            }
        }
    }

}