jQUery prevent form submission.

 $('#edit_user_form').submit(function(){

        $(textarea[name = user_form_snippet]).enabled = enabled;

        return false;

        e.preventDefault();

 });

Below is my rails form.

<%form_for @user, :html {:id => edit_user_form },

          :url => {action => update, :id => @user.id} do |f| %>



<% end %>

My jQuery function is getting called, but for strange reason the form is getting submitted even if use either return false or e.preventDefault()