Calendar Tabs (year, month and day) not appear

Hello,
i install drupal 7.14 and this module:

- calendar-7.x-3.x-dev (is the same with calendar-7.x-3.4)
- ctools-7.x-1.0
- date-7.x-2.5
- views-7.x-3.3

and i add a field data (type date) to content type basic.
After i create a views from template (Add view from template):

A calendar view of the 'field_data' field in the 'node' base table

i saved it. But nothing tabs appears:
This is the link:
http://www.denisvitali.com/adarteventi/calendar

I enable Date Tools module but in the dropdown view i'm not see the revert option.
I only watch this options:

- edit
- disable
- delete
- clone
- export

I update the calendar module and other module in my site and now i have the same problem: the tabs not appears.

Thanks.