redirect() not working - any idea or hint??

[eluser]Jan_1[/eluser]
Hi everybody! Could someone please help me or give me a hint how to solve it?

I am doing a survey. That happens on my_domain.com/question/index.php

I have a JQuery/Javascript, that posts data to a CI controller (my_domain.com/vote/index.php). The Javascript is called from the question-view (by question-controller)

In my session are userdata "question_number" and "last_question".

In my vote-controller, called by the javascript, I do want to do a redirect to the 'survey-result-page' if $question_number > $last_question.

vote.php:

Code:

if( $question_number   >   $last_question)  
{
   echo "X";
   redirect('http://google.com', 'refresh');
}

That works, because I do get the "X". but it does not redirect. I think it is because the ouput is already done by the question-controller. What could I do?

Or is it not that but a .htaccess-question?

Code:

<IfModule mod_rewrite.c>
        RewriteEngine On
        RewriteBase /

        # Removes index.php  URLs
        RewriteCond %{THE_REQUEST} ^GET.*index\.php [NC]
        RewriteCond %{REQUEST_URI} !/system/.* [NC]
        RewriteRule (.*?)index\.php/*(.*) /$1$2 [R=301,NE,L]

        # Directs all web requests through the site index file
        RewriteCond %{REQUEST_FILENAME} !-f
        RewriteCond %{REQUEST_FILENAME} !-d
        RewriteRule ^(.*)$ /index.php?/$1 [L]
</IfModule>

Every hint appriciated! Thank You!