Gazelle/static/functions/forum_search.js

(function ($) {
	$(document).ready(function() {
		$(".forum_category").click(function(e) {
			var id = this.id;
			var isChecked = $(this).text() != "Check all";
			isChecked ? $(this).text("Check all") : $(this).text("Uncheck all");
			$("input[data-category='" + id + "']").attr("checked", !isChecked);
			e.preventDefault();
		});
	});
}(jQuery));