Código PHP:
echo "<tr><td class=\"link_azul_bold\" >";
echo "<form name=\"Apli\" method=\"post\" action=\"Detalle_Aplic.php\">";
echo "<input type=\"hidden\" name=\"Codigo\" value=\"".$fila->CO_APLIC."\"></form>";
echo "<a class=\"link_azul_bold\" href=\"javascript: document.Apli.submit()\" target=\"_self\">".$fila->ACRONIMO."</a>";