ZendX_JQuery_Form_Element_DatePicker隐藏时间

I'm developing an app with PHP and Zend Framework, i've a form where the user should input a date and i do this field with JQuery and ZendX_JQuery_Form_Element_DatePicker.

It's work fine but my problem is that is shown the calendar for choosing the date and also a list of times to chose and i want ONLY the date.

This is my code,

FORM:

$dtstart = new ZendX_JQuery_Form_Element_DatePicker("datainizio", array("label" => "Data controllo: *"));
        $dtstart->setJQueryParam('dateFormat', 'dd.mm.yy');
        $dtstart->setRequired(true);
        $this->addElement($dtstart);

JAVASRIPT:

$("#datainizio").datetimepicker({
        format:'Y-m-d',
        inline:true,
        lang:'it',
        step: 10
    });

Can I solve it?

Thank's

Add 'showTimepicker': false to the jquery code:

$("#datainizio").datetimepicker({
    format:'Y-m-d',
    'showTimepicker': false,
    inline:true,
    lang:'it',
    step: 10
});