$_GET doesn't work

[eluser]penta997[/eluser]
Helo. Does someone know, why I cant get value from $_GET??
This is my form code:

Code:

<div id="wyszukiwarka">
                 &lt;form name="spendfrm" action="&lt;?php echo base_url();?&gt;index.php/ksiegarnia/get_books_by_keyword" method="GET"&gt;
                     &lt;input type="text" name="szukaj" /&gt;
                     &lt;input type="submit" name="wyszukaj" value="wyślij" /&gt;

                     &lt;/form&gt;
        </div>

and this is part of controller:

Code:

function  get_books_by_keyword($key='')
       {
                      
                      if(isset($_GET['szukaj']))
                      {
                          echo 'dupa';
                          $key = $_GET['szukaj'];
                      }

When I'm running an application the text field is empty.