function run_geshi_filter(array $params = array())
    {
      //If line numbers is explicitely turned on
        if (in_array('line_numbers_on', $params))
            $this->line_numbers_on = TRUE;

        //If line numbers is explicitely turned off (this one wins, if both defined)
    if (in_array('line_numbers_off', $params))
      $this->line_numbers_on = FALSE;

    //Get the output from CI
        $ci_output = $this->ci->output->get_output();

        //If there are <sourcecode>..</sourcecode> tags, process them
        if (strpos($ci_output, "<sourcecode"))
        {
            //Tried to use REGEX, but there were bugs!  Arg!
            $begin_searching_at = 0;
            while (strpos($ci_output, "<sourcecode", $begin_searching_at))
            {
                $begin = strpos($ci_output, "<sourcecode", $begin_searching_at);
                $end = strpos($ci_output, "</sourcecode>", $begin_searching_at) + strlen("</sourcecode>");

                //Test
                $ci_output = substr($ci_output, 0, $begin) . @$this->_set_geshi_content(substr($ci_output, $begin, $end-$begin)) . substr($ci_output, $end);

                $begin_searching_at = $end;
            }

            echo $ci_output;
        }
        else
          echo $ci_output;
    }