NicEditor not working ReferenceError: bkLib-Collection of common programming errors

I got a problem with my NicEditor. If I use a simple html page which is like this:

bkLib.onDomLoaded(nicEditors.allTextAreas);

Which is okay. But what happens is im using a index.page which has a navigation pane and a DIV container pane which will be change after I selected a menu in the navigation pane using this code

$('table#messages tr td a').click(function(){
    //Content Manipulation
    var page = $(this).attr('href');
    page = page.replace('#','');
    $('#content').load('message.details.php?messageid='+page);

    return false;
});

I tried to include the NicEditor Script in the index.php but it seems the of the message.detail.php was not converted into NicEditor. I also tried to include NicEditor Script to the message.detail.php but it gives an error of “Uncaught ReferenceError: bkLib is not defined”

Message Detail Page

bkLib.onDomLoaded(nicEditors.allTextAreas);


    
        
    

I hope you understand what I’m trying to say.