diff -r 322d0feea350 -r 89ef5ed3c48b src/cm/media/js/lib/yui/yui_3.10.3/build/event-mouseenter/event-mouseenter-debug.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/yui/yui_3.10.3/build/event-mouseenter/event-mouseenter-debug.js	Tue Jul 16 14:29:46 2013 +0200
@@ -0,0 +1,136 @@
+/*
+YUI 3.10.3 (build 2fb5187)
+Copyright 2013 Yahoo! Inc. All rights reserved.
+Licensed under the BSD License.
+http://yuilibrary.com/license/
+*/
+
+YUI.add('event-mouseenter', function (Y, NAME) {
+
+/**
+ * <p>Adds subscription and delegation support for mouseenter and mouseleave
+ * events.  Unlike mouseover and mouseout, these events aren't fired from child
+ * elements of a subscribed node.</p>
+ *
+ * <p>This avoids receiving three mouseover notifications from a setup like</p>
+ *
+ * <pre><code>div#container > p > a[href]</code></pre>
+ *
+ * <p>where</p>
+ *
+ * <pre><code>Y.one('#container').on('mouseover', callback)</code></pre>
+ *
+ * <p>When the mouse moves over the link, one mouseover event is fired from
+ * #container, then when the mouse moves over the p, another mouseover event is
+ * fired and bubbles to #container, causing a second notification, and finally
+ * when the mouse moves over the link, a third mouseover event is fired and
+ * bubbles to #container for a third notification.</p>
+ *
+ * <p>By contrast, using mouseenter instead of mouseover, the callback would be
+ * executed only once when the mouse moves over #container.</p>
+ *
+ * @module event
+ * @submodule event-mouseenter
+ */
+
+var domEventProxies = Y.Env.evt.dom_wrappers,
+    contains = Y.DOM.contains,
+    toArray = Y.Array,
+    noop = function () {},
+
+    config = {
+        proxyType: "mouseover",
+        relProperty: "fromElement",
+
+        _notify: function (e, property, notifier) {
+            var el = this._node,
+                related = e.relatedTarget || e[property];
+
+            if (el !== related && !contains(el, related)) {
+                notifier.fire(new Y.DOMEventFacade(e, el,
+                    domEventProxies['event:' + Y.stamp(el) + e.type]));
+            }
+        },
+
+        on: function (node, sub, notifier) {
+            var el = Y.Node.getDOMNode(node),
+                args = [
+                    this.proxyType,
+                    this._notify,
+                    el,
+                    null,
+                    this.relProperty,
+                    notifier];
+
+            sub.handle = Y.Event._attach(args, { facade: false });
+            // node.on(this.proxyType, notify, null, notifier);
+        },
+
+        detach: function (node, sub) {
+            sub.handle.detach();
+        },
+
+        delegate: function (node, sub, notifier, filter) {
+            var el = Y.Node.getDOMNode(node),
+                args = [
+                    this.proxyType,
+                    noop,
+                    el,
+                    null,
+                    notifier
+                ];
+
+            sub.handle = Y.Event._attach(args, { facade: false });
+            sub.handle.sub.filter = filter;
+            sub.handle.sub.relProperty = this.relProperty;
+            sub.handle.sub._notify = this._filterNotify;
+        },
+
+        _filterNotify: function (thisObj, args, ce) {
+            args = args.slice();
+            if (this.args) {
+                args.push.apply(args, this.args);
+            }
+
+            var currentTarget = Y.delegate._applyFilter(this.filter, args, ce),
+                related = args[0].relatedTarget || args[0][this.relProperty],
+                e, i, len, ret, ct;
+
+            if (currentTarget) {
+                currentTarget = toArray(currentTarget);
+
+                for (i = 0, len = currentTarget.length && (!e || !e.stopped); i < len; ++i) {
+                    ct = currentTarget[0];
+                    if (!contains(ct, related)) {
+                        if (!e) {
+                            e = new Y.DOMEventFacade(args[0], ct, ce);
+                            e.container = Y.one(ce.el);
+                        }
+                        e.currentTarget = Y.one(ct);
+
+                        // TODO: where is notifier? args? this.notifier?
+                        ret = args[1].fire(e);
+
+                        if (ret === false) {
+                            break;
+                        }
+                    }
+                }
+            }
+
+            return ret;
+        },
+
+        detachDelegate: function (node, sub) {
+            sub.handle.detach();
+        }
+    };
+
+Y.Event.define("mouseenter", config, true);
+Y.Event.define("mouseleave", Y.merge(config, {
+    proxyType: "mouseout",
+    relProperty: "toElement"
+}), true);
+
+
+}, '3.10.3', {"requires": ["event-synthetic"]});