영카트5 제이쿼리 질문 입니다.

<script>$(function (){    var $category = $("#category");    $("#hd_ct").on("click", function() {        $category.css("display","block");    });    $("#category .pop_close").on("click", function(){        $category.css("display","none");    });    $("button.sub_ct_toggle").on("click", function() {        var $this = $(this);        $sub_ul = $(this).closest("li").children("ul.sub_cate");        if($sub_ul.size() > 0) {            var txt = $this.text();            if($sub_ul.is(":visible")) {                txt = txt.replace(/닫기$/, "열기");                $this                    .removeClass("ct_cl")                    .text(txt);            } else {                txt = txt.replace(/열기$/, "닫기");                $this                    .addClass("ct_cl")                    .text(txt);            }            $sub_ul.toggle();        }    });});</script>​