datepicker 달력 질문

<script>  
                    $('body').on('click', 'input.datepicker', function(event) {
                    $(this).datepicker({
                    showOn: 'focus',
                    dateFormat: "yy-mm-dd",
                    yearRange: "2014:+5",
                    changeMonth: true,
                    changeYear: true
                    }).focus();
                    });
                </script>