https://sp-m.mu-mo.net/js/muca.js?1.129.0

1/* MU-CA会員メニュー開閉 */
2function toggleMucaMenu(selector) {
3  $(selector).find(".mucaMenu").slideToggle(
4    "normal",
5    function(){
6      $(selector).find(".menuTriangle").toggle();
7    }
8  );
9}

Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.