WordPress/wp-admin/js/language-chooser.min.js

!function(a){function b(){return c?void setTimeout(b,50):void(a(":focus").hasClass("language-chooser-input")!==!0&&d.removeClass("focus"))}if(a("body").hasClass("language-chooser")!==!1){var c=0,d=a("fieldset");document.body.onmousedown=function(){++c},document.body.onmouseup=function(){--c},d.focusin(function(){a(this).addClass("focus")}),d.focusout(function(){setTimeout(b,50)}),a("form").submit(function(){a(this).find(".step .spinner").css("visibility","visible")})}}(jQuery);