Is there some issue doing it in jQuery?
===

I can do it without worry about performance problems?

    $(document).ready(function() {
    
    (function(new_selector) { new_selector('.classname').fadeIn('fast'); })($);
    
    });

or

    $(function() {
    
    (function(new_selector) { new_selector('.classname').fadeIn('fast'); })($);
    
    });

thanks.

maybe it could be a idiot question but i like to worry about performance.