From 6d12053b5b1cb0f2dd884847c5d2ba5a82a21db9 Mon Sep 17 00:00:00 2001
From: danzel <danzel@localhost.geek.nz>
Date: Wed, 18 Dec 2013 10:16:14 +1300
Subject: [PATCH] Prevent multiple clustermouseover/off events if the icon is
 made up of stacked divs. Fixes #252.

Doesn't fix this bug in IE <= 8 as they don't support relatedTarget, could fix it by looking at the event type and using fromElement/toElement, but I'm not going to.
---
 src/MarkerClusterGroup.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/MarkerClusterGroup.js b/src/MarkerClusterGroup.js
index 313d8e29a..476b8e032 100644
--- a/src/MarkerClusterGroup.js
+++ b/src/MarkerClusterGroup.js
@@ -547,8 +547,22 @@ L.MarkerClusterGroup = L.FeatureGroup.extend({
 		delete marker.__parent;
 	},
 
+	_isOrIsParent: function (el, oel) {
+		while (oel) {
+			if (el === oel) {
+				return true;
+			}
+			oel = oel.parentNode;
+		}
+		return false;
+	},
+
 	_propagateEvent: function (e) {
 		if (e.layer instanceof L.MarkerCluster) {
+			//Prevent multiple clustermouseover/off events if the icon is made up of stacked divs (Doesn't work in ie <= 8, no relatedTarget)
+			if (this._isOrIsParent(e.layer._icon, e.originalEvent.relatedTarget)) {
+				return;
+			}
 			e.type = 'cluster' + e.type;
 		}