<head_merge>
  <script type="text/javascript" src="/jquery/js/jquery.ui.core.js"></script>
  <script type="text/javascript" src="/jquery/js/jquery.ui.datepicker.js"></script>
  <script type="text/javascript" src="/jquery/js/jquery.ui.datepicker-cs.js"></script>
  <script type="text/javascript">
    $(document).ready(function() {
      $.datepicker.setDefaults({
        dateFormat: "dd.mm.yy"
      });
      $(".date").datepicker();
    });
  </script>
  <link rel="stylesheet" href="/jquery/jquery.ui.all.css" type="text/css" media="screen, projection"/>
</head_merge>