function verificaArticulo($Prod)
 {
     if (isset($_SESSION['user'])) {
         $data = new pegaso();
         $pagina = $this->load_template('Compra Venta');
         $html = $this->load_page('app/views/pages/p.ordcomp.php');
         ob_start();
         $exec = $data->valorArticulo($Prod);
         if ($exec != '') {
             list($unimed, $facconv) = explode("|", $exec);
             //header('Location: app/views/pages/p.ordcompVerifica.php?nombreProv='.$exec);
             //header('Location: index.php?action=ok&unimed='.$unimed);
             $_SESSION['unimed'] = $unimed;
             $_SESSION["facconv"] = $facconv;
         } else {
             //unset($_SESSION['unimed']);
             $pagina = $this->replace_content('/\\#CONTENIDO\\#/ms', $html . '<h2>No hay usuarios registrados</h2>', $pagina);
         }
         $this->view_page($pagina);
     } else {
         $e = "Favor de Iniciar Sesión";
         header('Location: index.php?action=login&e=' . urlencode($e));
         exit;
     }
 }