combo select de empresas

empresas.html

<h1>Salmones</h1>
<script>
   function ingresar() {
   document.forms["empresa-form"].submit();
   }
</script>
<form action="https://extranet.intesal.cl/sustentabilidad/" method="post" name="empresa-form" id="empresa-form" target="_blank">
   <select name="empresa" id="empresa" onchange="javascript:ingresar();">
<option value="">Selecciona empresa</option>
      <option value="">Resultados Informe Sustentabilidad - Gestión 2018</option>
      <option value="E00">Socios SalmonChile</option>
      <option value="E05">Aquachile</option>
      <option value="E01">Australis Mar</option>
      <option value="E02">Blumar</option>
      <option value="E03">Cermaq Chile</option>
      <option value="E13">Cooke Aquaculture</option>
      <option value="E04">Cultivos Yadrán</option>
      <option value="E08">Los Fiordos</option>
      <option value="E06">Marine Farm</option>
      <option value="E07">Multiexport Foods</option>
      <option value="E09">Salmones Austral</option>
      <option value="E11">Salmones Caleta Bay</option>
      <option value="E12">Salmones Camanchaca</option>
      <option value="E14">Salmones Friosur</option>
      <option value="E15">Salmones Magallanes</option>
      <option selected="" value="E16">Ventisqueros</option>
   </select>
</form>