Unable to open bootstrap modal window

[eluser]Unknown[/eluser]
I'm new to CodeIgniter and bootstrap and i'm having some problems to open the modal javascript.

Here whats happening, i have a controller x and if i load a page from the index function it all works fine, but if a load from another function my bootstrap modal windows are not opening

Code:

class X extends CI_Controller{
      public function index(){
           $this->load->view('home');
           }
      public function not_index(){
           $this->load->view('home');
           }

My html would be like

Code:

<div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

Now if i use jquery to open it, only opens when my url is http://mysite/x and when i load from http://mysite/x/not_index it cant open

Code:

$('#myModal').modal('toggle')

i was able to open it using javascript changing the attributes from the id MyModal but i lost the nice effects that bootstrap has. Does anyone knows hot to fix this? Thanks!