https://campogalego.gal/wp-content/plugins/sitepress-multilingual-cms/res/js/language-selector.js?vers=3.5.3.1

1    var wpml_language_selector_click = {
2        ls_click_flag: false,
3        toggle: function (icl_switcher) {
4            var sel;
5            if (icl_switcher != undefined) {
6                sel = icl_switcher.children[0].children[0].children[1];
7            } else {
8                sel = document.getElementById('lang_sel_click').children[0].children[0].children[1];
9            }
10            
11            if(sel.style.visibility == 'visible'){
12                sel.style.visibility = 'hidden';
13                document.removeEventListener('click', wpml_language_selector_click.close);                
14            }else{                                
15                sel.style.visibility = 'visible';
16                document.addEventListener('click', wpml_language_selector_click.close);                
17                wpml_language_selector_click.ls_click_flag = true;
18            }
19            return false;
20        },
21        close: function(e){
22            if(!wpml_language_selector_click.ls_click_flag){
23                var sel = document.getElementById('lang_sel_click').children[0].children[0].children[1];            
24                sel.style.visibility = 'hidden';
25            }
26            wpml_language_selector_click.ls_click_flag = false;
27        }
28    };