Second favorite button does not refresh when clicked - any idea ?

Question

I am using two favorite buttons, one at the top and one at the end of question by adding a second time 

$favorite=@$this->content['favorite'];

if (isset($favorite))

$this->output('<FORM '.$favorite['form_tags'].'>');

$this->favorite();

if (isset($favorite)) {

$this->form_hidden_elements(@$favorite['form_hidden']);

$this->output('</FORM>');

}

 

Both buttons work, but the second one does not refresh when clicked.

What could be the reason ? Both buttons still have the same name and so on..