jquery datepicker 한글화가 왜 제대로 안될까요?

<script type="text/javascript" src="<?php echo G5_JS_URL ?>/jquery-ui.min.js"></script><script type="text/javascript">$.datepicker.regional["ko"] = { prevText: "이전달", nextText: "다음달", currentText: "오늘", monthNames: ["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"], monthNamesShorts: ["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"], dayNames: ["일","월","화","수","목","금","토"], dayNamesShort: ["일","월","화","수","목","금","토"], dayNamesMin: ["일","월","화","수","목","금","토"], weekHeader: "Wk", dateFormat: "yy-mm-dd", firstDay: 0, // Sunday is 0, Monday is 1 isRTL: false, showMonthAfterYear: true, yearSuffix: "년"};$.datepicker.setDefaults($.datepicker.regional["ko"]);</script>​