CJuiDatePicker

 <?php
  // widget
  $this->widget('zii.widgets.jui.CJuiDatePicker', array(
   'language'=>'es',
   'model'=>$model,
   'attribute'=>'fechaString',
   'flat'=>false,
   'options'=>array(
    'firstDay'=>1,
    'showOn'=>"both",
    //'buttonImage'=>"images/calendar.gif",
    'buttonImageOnly'=> true,
    //'minDate'=>-31,
    //'maxDate'=>0,
    'constrainInput'=>true,
    'currentText'=>'Now',
    'dateFormat'=>'dd/mm/yy',
   ),
   'htmlOptions'=>array(
   ),
  ));
 ?>