Redirect to a new tab with javascript

[patrocine 5]

I need when I redirect it to open in a new tab in the browser with _blank but I haven't found how to implement it in the code

 

  <script type="text/javascript">

       var pagina = 'categories.php<? echo '?cPath=' . $categories['parent_id'] .'&pID=' . $products_id.'&action=new_product';  ?>';
    var segundos = 0;

    function redireccion() {

        document.location.href=pagina;

    }

    setTimeout("redireccion()",segundos);

     </script>