diff --git a/ajax/libs/jquery.appear/0.3.3/jquery.appear.js b/ajax/libs/jquery.appear/0.3.3/jquery.appear.js
new file mode 100644
index 000000000..ff0b76400
--- /dev/null
+++ b/ajax/libs/jquery.appear/0.3.3/jquery.appear.js
@@ -0,0 +1,101 @@
+/*
+ * jQuery appear plugin
+ *
+ * Copyright (c) 2012 Andrey Sidorov
+ * licensed under MIT license.
+ *
+ * https://github.com/morr/jquery.appear/
+ *
+ * Version: 0.3.3
+ */
+(function($) {
+  var selectors = [];
+
+  var check_binded = false;
+  var check_lock = false;
+  var defaults = {
+    interval: 250,
+    force_process: false
+  }
+  var $window = $(window);
+
+  var $prior_appeared;
+
+  function process() {
+    check_lock = false;
+    for (var index = 0; index < selectors.length; index++) {
+      var $appeared = $(selectors[index]).filter(function() {
+        return $(this).is(':appeared');
+      });
+
+      $appeared.trigger('appear', [$appeared]);
+
+      if ($prior_appeared) {
+        var $disappeared = $prior_appeared.not($appeared);
+        $disappeared.trigger('disappear', [$disappeared]);
+      }
+      $prior_appeared = $appeared;
+    }
+  }
+
+  // "appeared" custom filter
+  $.expr[':']['appeared'] = function(element) {
+    var $element = $(element);
+    if (!$element.is(':visible')) {
+      return false;
+    }
+
+    var window_left = $window.scrollLeft();
+    var window_top = $window.scrollTop();
+    var offset = $element.offset();
+    var left = offset.left;
+    var top = offset.top;
+
+    if (top + $element.height() >= window_top &&
+        top - ($element.data('appear-top-offset') || 0) <= window_top + $window.height() &&
+        left + $element.width() >= window_left &&
+        left - ($element.data('appear-left-offset') || 0) <= window_left + $window.width()) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  $.fn.extend({
+    // watching for element's appearance in browser viewport
+    appear: function(options) {
+      var opts = $.extend({}, defaults, options || {});
+      var selector = this.selector || this;
+      if (!check_binded) {
+        var on_check = function() {
+          if (check_lock) {
+            return;
+          }
+          check_lock = true;
+
+          setTimeout(process, opts.interval);
+        };
+
+        $(window).scroll(on_check).resize(on_check);
+        check_binded = true;
+      }
+
+      if (opts.force_process) {
+        setTimeout(process, opts.interval);
+      }
+      selectors.push(selector);
+      return $(selector);
+    }
+  });
+
+  $.extend({
+    // force elements's appearance check
+    force_appear: function() {
+      if (check_binded) {
+        process();
+        return true;
+      };
+      return false;
+    }
+  });
+})(jQuery);
diff --git a/ajax/libs/jquery.appear/0.3.3/jquery.appear.min.js b/ajax/libs/jquery.appear/0.3.3/jquery.appear.min.js
new file mode 100644
index 000000000..f5c5538d0
--- /dev/null
+++ b/ajax/libs/jquery.appear/0.3.3/jquery.appear.min.js
@@ -0,0 +1 @@
+!function(e){function r(){n=!1;for(var r=0;r<i.length;r++){var a=e(i[r]).filter(function(){return e(this).is(":appeared")});if(a.trigger("appear",[a]),t){var o=t.not(a);o.trigger("disappear",[o])}t=a}}var t,i=[],a=!1,n=!1,o={interval:250,force_process:!1},f=e(window);e.expr[":"].appeared=function(r){var t=e(r);if(!t.is(":visible"))return!1;var i=f.scrollLeft(),a=f.scrollTop(),n=t.offset(),o=n.left,p=n.top;return p+t.height()>=a&&p-(t.data("appear-top-offset")||0)<=a+f.height()&&o+t.width()>=i&&o-(t.data("appear-left-offset")||0)<=i+f.width()?!0:!1},e.fn.extend({appear:function(t){var f=e.extend({},o,t||{}),p=this.selector||this;if(!a){var s=function(){n||(n=!0,setTimeout(r,f.interval))};e(window).scroll(s).resize(s),a=!0}return f.force_process&&setTimeout(r,f.interval),i.push(p),e(p)}}),e.extend({force_appear:function(){return a?(r(),!0):!1}})}(jQuery);
\ No newline at end of file
diff --git a/ajax/libs/jquery.appear/package.json b/ajax/libs/jquery.appear/package.json
new file mode 100644
index 000000000..04a98c93c
--- /dev/null
+++ b/ajax/libs/jquery.appear/package.json
@@ -0,0 +1,35 @@
+{
+  "name": "jquery.appear",
+  "title": "jQuery Appear",
+  "filename": "jquery.appear.min.js",
+  "description": "It implements a custom 'appear'/'disappear' events which are fired when an element became visible/invisible in the browser view port.",
+  "keywords": [
+    "event",
+    "appear",
+    "disappear"
+  ],
+  "version": "0.3.3",
+  "author": {
+    "name": "Andrey Sidorov",
+    "email" : "takandar@gmail.com",
+    "url": "https://github.com/morr/jquery.appear/blob/master/AUTHORS.txt"
+  },
+  "maintainers": [
+    {
+      "name": "Andrey Sidorov",
+      "email": "takandar@gmail.com"
+    }
+  ],
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "http://opensource.org/licenses/MIT"
+    }
+  ],
+  "homepage": "https://github.com/morr/jquery.appear",
+  "demo": "http://morr.github.com/appear.html",
+  "issues": "https://github.com/morr/jquery.appear/issues",
+  "dependencies": {
+    "jquery": ">=1.5"
+  }
+}