error display date field

hello
I created a new date field in CB Italian.
In front end, however, there is no timetable.
How well does not appear the menu to select month, day, year, but a single field with the date inserted.
Why? Solutions?
thanks

test with English plugin.
Check for javaascript errors on your pages.

thanks nant
I uninstalled the plugin of Italian language.
in Italian, however, remains the voice of the date field.
the rest is almost all in English.
why?
Of course, everything has remained as before.

nant wrote: Check for javaascript errors on your pages.

I made ​​several tests with no results.
I invite you to explore my site, personally.
Go to www.idoerani.it/sito/
Write to log: user = docente1 password = docente1
Perhaps you understand the problem.
thanks

gotico wrote: I made ​​several tests with no results.
I invite you to explore my site, personally.
Go to www.idoerani.it/sito/
Write to log: user = docente1 password = docente1
Perhaps you understand the problem.
thanks

Well I don't know what tests you did ...

I see:

Error: jQuery.validator is undefined
Source File: www.idoerani.it/sito/index.php?option=com_comprofiler&Itemid=102&task=userDetails
Line: 65

It looks like something on your site is loading jquery again and not in no conflict mode.

Most likely this code:

<script type="text/javascript" src=" code.jquery.com/jquery-latest.js ">
<script type="text/javascript" src="/sito/templates/themza_j16_04/js/jquery.nivo.slider.js"></script>

maybe a slider module you can disable and test?