jquery.live_update.js

// Based on code found at: http://ejohn.org/blog/jquery-livesearch/
(function($) {
  $.fn.liveUpdate = function(list, options){
    var list = $(list),
        original = list.html();
        options = $.extend({}, options);
    if ( list.length ) {
      var rows = list.children('li'),
        cache = rows.map(function(){
          return $.trim($(this).text().toLowerCase());
        });
      
      this.keyup(filter).keyup();
    }

    return this;

    function filter(){
      var term = $.trim( $(this).val().toLowerCase() ), scores = [];

      if ( !term ) {
        list.html(original);
        rows = list.children('li');
        rows.show();
        cache = rows.map(function(){
          return $(this).text().toLowerCase();
        });
        if (options.onReset && $.isFunction(options.onReset)){
          options.onReset(list);
        }
      } else {
        rows.hide();

        cache.each(function(i){
          var score = this.score(term);
          if (score > 0) { scores.push([score, i]); }
        });
        
        $.each(scores.sort(function(a, b){return b[0] - a[0];}), function(){
          $(rows[ this[1] ]).show();
        });
      }
      
      $(document).trigger('afterFilter.liveUpdate');
    }
  };
})(jQuery);