(function($) {

  $.fn.randomize = function(){
    return $(this).sort(function() {return 0.5 - Math.random()});
  }

  $.fn.filterprojects = function(settings) {
    settings = $.extend({
      animationSpeed: 900,
      animationPulse: 100,
      animationEase: "linear",
      activeClass: "active",
      allTag: "all",
      randomize: true,
      show: { width: "show", opacity: "show" },
      hide: { width: "hide", opacity: "hide" },
      filterTagSelector: [] // specify at least one 
      }, settings);

      $(this).each(function(i, o){
        var _elements = $(this).children();

        /* Binding the filter */
        $(this).bind("filter", function(){
          var _groups = [];
          var _filtered_elements = _elements;
          $.each(settings.filterTagSelector, function(k, j){
            _groups[k] = [];
            $(this + "." + settings.activeClass).each(function(){ 
              if(!$(this).hasClass(settings.allTag) && this.hash != undefined) { _groups[k].push(this.hash.substring(1)); }
            });
            if(_groups[k].length > 0){
              _filtered_elements = _filtered_elements.filter("." + _groups[k].join(",.")); 
            }
          });

          /* Randomize */
          if(settings.randomize){
            _filtered_elements = _filtered_elements.randomize();
            _elements = _elements.randomize();
          }

          /* Show */
          _filtered_elements.each(function(i,o){
            $(this).queue(function(){
              $(this).animate({left: "+0"}, (settings.animationPulse*i)); // dirty trick :)
              $(this).animate(settings.show, settings.animationSpeed);
              $(this).dequeue()
            });
          });

          /* Hide */
          _elements.not(_filtered_elements).each(function(i,o){
            $(this).queue(function(){
              $(this).animate({left: "+0"}, (settings.animationPulse*i)); // dirty trick :)
              $(this).animate(settings.hide, settings.animationSpeed);
              $(this).dequeue()
            });
          });

        });

        /* Setup filter selectors */
        $.each(settings.filterTagSelector, function(k, j){
          $(""+this).click(function(e){
            e.preventDefault();
            if($(this).hasClass(settings.allTag)){
              $(j).removeClass(settings.activeClass);
              $(this).addClass(settings.activeClass);
            } else {
              $(this).hasClass(settings.activeClass) ? $(this).removeClass(settings.activeClass) : $(this).addClass(settings.activeClass);
              $(j+"."+settings.activeClass).length > 0 ? $(j+"."+settings.allTag).removeClass(settings.activeClass) : $(j+"."+settings.allTag).addClass(settings.activeClass);
            }
            /* Triggering the filter */ 
            $(o).trigger("filter");
          })
        });
      });
      return this
    };
    
})(jQuery);