 
         render_error: (args) =>
             @$('.alert_error_content').html @error_template args
-            @$('.main_alert_error').slideDown 'fast'
-            @$('.main_alert').slideUp 'fast'
+            @$('.main_alert_error').show()
+            @$('.main_alert').hide()
 
         render_feedback: (args) =>
             if @$('.main_alert').css('display') is 'none'
                 @$('.alert_content').html @alert_message_template args
-                @$('.main_alert').slideDown 'fast'
+                @$('.main_alert').show()
             else
                 @$('.main_alert').fadeOut 'fast', =>
                     @$('.alert_content').html @alert_message_template args
                     @$('.main_alert').fadeIn 'fast'
-            @$('.main_alert_error').slideUp 'fast'
+            @$('.main_alert_error').hide()
 
         render: =>
             return @

        # Show a confirmation before deleting a secondary index
        confirm_delete: (event) =>
            event.preventDefault()
            @$('.alert_confirm_delete').slideDown 'fast'

        delete_index: =>
            @$('.btn').prop 'disabled', 'disabled'

                    if view.model is index
                        index.destroy()
                        ((view) =>
                            view.remove()
                            @indexes_view.splice(@indexes_view.indexOf(view), 1)
                        )(view)
                        break
                if @collection.length is 0
