case "MySQL":
        $dbi=mysql_connect($host, $user, $password);
         mysql_query ("set character_set_client='cp1251'");
        mysql_query ("set character_set_results='cp1251'");
        mysql_query ("set collation_connection='cp1251_general_ci'");
        if (!mysql_select_db($db)) {
            #mysql_query("CREATE DATABASE $db");
            #mysql_select_db($db);
            #include("includes/install.php");
            die("Упс что-то наш сервак хандрит!");
        }
        return $dbi;
    break;;

    case "mSQL":
         $dbi=msql_connect($host);

         if (!msql_select_db($db)) {
            msql_query("CREATE DATABASE $db");
            msql_select_db($db);
            include("includes/install.php");
            die();
         }
         return $dbi;
    break;;


    case "PostgreSQL":
         $dbi=@pg_connect("host=$host user=$user password=$password port=5432 dbname=$db");
         return $dbi;
    break;;

    case "PostgreSQL_local":
         $dbi=@pg_connect("user=$user password=$password dbname=$db");
         return $dbi;
    break;;

    case "ODBC":
         $dbi=@odbc_connect($db,$user,$password);
         return $dbi;
    break;;

    case "ODBC_Adabas":
         $dbi=@odbc_connect($host.":".$db,$user,$password);
         return $dbi;
    break;;

    case "Interbase":
         $dbi=@ibase_connect($host.":".$db,$user,$password);
         return $dbi;
    break;;

    case "Sybase":
        $dbi=@sybase_connect($host, $user, $password);
        if (!sybase_select_db($db,$dbi)) {
            sybase_query("CREATE DATABASE $db",$dbi);
            sybase_select_db($db,$dbi);
            include("includes/install.php");
            die();
        }
        return $dbi;
    break;;