jquery autocomplete with trailing message

    var data = "Core Core Selectors Attributes Traversing Manipulation CSS Events Effects Ajax Utilities".split(" ");
    $(".autocomplete").autocomplete(data, {minChars: 0});

    function append_message(text) {
      if ($(".ac_results").find("span").length == 0) {
        $(".ac_results").append("<span>"+text+"</span>");
      };
    };

    $(".autocomplete").keyup(function(){
      append_message("If your country is not listed enter it anyway");
    });