<form action="" method="POST" enctype="multipart/form-data" onsubmit="return validar();">
    <h1>Adicionar Membros</h1>
    <div class="Filter"> Nome:
        <input
            type="text"
            name="nome_member"
            id="nome_member"
            value=" <?=$row['utmz_source']?>" /> <!-- input -->
    </div>
    <div class="Filter">E-mail:
        <input
            type="email"
            name="email_member"
            id="email_member"
            value="" /> <!-- input -->
    </div>
    <div class="Submit">
        <input
            type="submit"
            name="Submit"
            id="gravar"
            value="<?=t('Gravar')?>"
            onclick="$('#edit_todo').val('Save')" /> <!-- input -->
    </div>
</form>

function validar() {
    if( document.getElementById("nome_member").value ) {
        //var nome_member = member.nome_member.value;
        //var  nome_member =member.email_member.value;

        alert("Preencha o campo de Nome");
        return false;
    }

    alert("Enviou");

    document.member.submit();
}

if (!$member_id_gl) {
    Zend_Registry::get('log')->log("[BD ".strtoupper($currentStore-
  >storeKey)."]: Criar membro com email ".$email.".", Zend_Log::DEBUG);
    $member->create_new($email);
    $member->date_inserted = date('Y-m-d H:i:s');
    $member->name = $name;
    $member->utmz_source = 'bd_'.$currentStore->storeKey;
    $member->utmz_name = 'bd_'.$currentStore->storeKey;
    $member->last_active = date('Y-m-d H:i:s');
    $member->store_id = $store_id;

    $member->email = $email;

    $member_id_gl = $member->save();

   if( isset ($_POST['member'] )  ){

      $member->name = $_POST['nome_member'];
      $member->email = $_POST['email_member'];

      $member->save($_POST['member']);

    Zend_Registry::get('log')->log("[BD ".strtoupper($currentStore-
  >storeKey)."]: Criar membro com email ".$email.".", Zend_Log::DEBUG);
    $member->create_new($email);

   }